Prabhu Dass Batvari - Academia.edu (original) (raw)
Papers by Prabhu Dass Batvari
Rasayan journal of chemistry/Rasayan journal of Chemistry, 2023
Ecology, Environment and Conservation
The impact of coastal erosion has adversely affected the socioeconomic conditions of the coastal ... more The impact of coastal erosion has adversely affected the socioeconomic conditions of the coastal communityworldwide. The coastal environment is experiencing a wide range of natural and anthropogenic pressurein India. The coastal zone has been receiving increased attention due to pressure of population growth,developmental activities, trade and transport and presence of vital and critical habitats. Severe coastalerosion, loss of marine ecosystem, industrial pollution, sedimentations in harbours and portsare some ofthe major concerns to the coastal zone managers. Thus, the presented study identifies the effects of existingmethods and suggesting an inventive structural measure to prevent the coastal erosion. Further, the suggestedmeasure supports the development of marine ecosystem as intact as an artificial coral reef which improvesthe coastal communityâslivelihoodsand sustenance of coastal ecosystem.
2021 International Conference on Advance Computing and Innovative Technologies in Engineering (ICACITE), 2021
Image compression is the process of compression an image in such a way that it has less space tha... more Image compression is the process of compression an image in such a way that it has less space than the original image. It is a classification of compression technique that reduces the size of an image file without affecting its quality to a greater extent. The biorthogonal transform used for decomposing the Lung images. After decomposition different methods of encoding are performed and finally the proposed compression methods are evaluated for finding optimum algorithm for Medical Image.
Global journal for research analysis, 2020
Water is essential element in the living being, at present water scarcity is the major crises in ... more Water is essential element in the living being, at present water scarcity is the major crises in Tamil Nadu state is taking into account that hydrologic time series are limited in Tamil Nadu, there is a strong need for hydrologic modeling tools that can be used to assess the effects of land use on the hydrologic cycle at a watershed scale with the available information. These hydrological models developed at a basin scale are required to improve the water resource management, which is a critical issue in most parts of Tamil Nadu, due to the reason we have selected Nandiar subbasin for our study. The objective of the present study is to evaluate the runoff, one of the output components of the hydrologic balance in the Nandiar sub-basin of Thiruvallur District of Tamil Nadu. An empirical rainfall-runoff model indicates the surface aspects of the catchments, which can be estimated by using Natural Resources Conservation Service - Curve Number (NRCS-CN) is a standout amongst those pract...
We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measure... more We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measured in four organs (gills, liver, intestine and muscle) of two fish species (Labeo rohita and Cirrhina mrigala) collected from Pulicat lake that receives effluents from industries located in north Chennai, southeast coast of India. The results show limited differences between the two species and organs as well as significant variations within the five analyzed metals. Although the metal concentrations measured in fish muscle are low, high levels of Fe and Pb were observed in the liver and gills followed by other organs of the two fish species. The concentrations of heavy metals in edible parts (muscle) of fish were within the permissible levels and are safe for the human consumption. However the results of the study clearly show the biomagnifications of metals in Pulicat lake.
Advances in Data Science, 2018
Sigma receptors belong to a class of small molecule-regulated, primarily endoplasmic reticulum (E... more Sigma receptors belong to a class of small molecule-regulated, primarily endoplasmic reticulum (ER) membrane-associated receptors, of which there are two subtypes: the Sigma-1 receptor (S1R) and the Sigma-2 receptor (S2R). Both S1R and S2R bind to a number of drugs including antipsychotic, haloperidol, and the opioid analgesic, (+)-pentazocine. Sigma receptors are implicated in multiple disease pathologies associated with the nervous system including diseases affecting motor control such as Amyotrophic Lateral Sclerosis (ALS) and Alzeimher's disease. This unit describes methods for the pharmacological characterization of S1R and S2R using radioligand-binding assays. In the first section, radioligand saturation binding assay to determine receptor densities and competitive inhibition assays to characterize affinities of novel compounds are presented for S1R using the selective S1R ligand, [ 3 H]-(+)-pentazocine. The second section describes radioligand saturation binding assay and competitive inhibition assays for the S2R using a non-selective S1R and S2R ligand, [ 3 H]-1,3-di(2-tolyl)guanidine ([ 3 H]-DTG).
Nature Environment and Pollution Technology, 2021
Groundwater is essential to the sustainability of India’s environment, economy, and living condit... more Groundwater is essential to the sustainability of India’s environment, economy, and living conditions because it isn’t just the primary source of domestic supply of water in rural areas, but it is also the major and most productive origin of the water. The increased demand for groundwater as a result of reduced rainfall has put a strain on groundwater resources in areas where groundwater is the primary supply of water. The main aim of this study is to identify and explore the groundwater potential zones in Talupula Mandal of 280.3 km2 in Ananthapur district in Andhra Pradesh, India with semi-arid climatic conditions. Based on the field survey approach, groundwater availability is found out in the villages. Schlumberger Vertical Electrical Sounding (VES) survey technique was used to discover the resistivity and thickness of the unmistakable layers. It was carried out in 18 randomly selected sites where groundwater plays an important role in agricultural and domestic use. The thicknes...
Nature Environment and Pollution Technology, 2021
Precipitation is the primary source of fresh water in the world. Surface runoff will happen when ... more Precipitation is the primary source of fresh water in the world. Surface runoff will happen when the amount of rainfall is greater than the soil’s infiltration capacity. In most water resource applications, runoff is the most important hydrological variable. Aside from these rainfall characteristics, there are a number of catchment-specific elements that have a direct impact on runoff amount and volume. This research focuses on estimating surface runoff over the lower Vellar basin, a river basin in the southern part of India, by integrating Soil Conservation Service-Curve Number (SCS-CN) method with GIS. This technique is one of the most common methods used by hydrologists for estimating surface runoff. Curve Number (CN) is an index established by the Natural Resource Conservation Service (NRCS) to denote the potential for stormwater runoff. The nature of the watershed is explored first by creating land use and land cover pattern followed by the preparation of slope, drainage, and l...
Water is an important component of living organisms, especially for human beings. The current stu... more Water is an important component of living organisms, especially for human beings. The current study of Chemberambakkam lake gave a lot of information about quality of the drinking water. The present paper showed the concentration of trace elements (Cd, Cr, Pb, Fe, Mn, Co, Ni, Zn, Cu) and cations like (Na, K, Ca, Mg) in the Lake water of the Chemberambakkam. The heavy metal concentration of Cd, Pb, Fe, co, and Ni were observed in high concentration than the WHO recommend level in the water, it means the Chemberambakkam lake water is highly contaminated from its surrounding industries. The analysis of date gave normal concentration of cations.
Rasayan Journal of chemistry, 2020
Concentrations of heavy metals namely Pb, Zn, Fe, Cu, Cd and Cr detected in tissue of two fish sp... more Concentrations of heavy metals namely Pb, Zn, Fe, Cu, Cd and Cr detected in tissue of two fish species (Pristipoma furcatus and Acanthurus strigosus) collected from Pulicate Lake, Chennai mixed with effluent from industries in and around north Chennai. The report shows significant results between the organs of P. furcatus and A. strigosus but also significant changes observed in all the metals determined in this study. The concentration of heavy metals in the fish tissue was medium to low. The organs of fish species measured high level of Lead and Iron. Trace metal levels in edible component tissue of fish were within the limit and good for consumption.
Cooum is one of the degraded sub basins in Tamil Nadu. Surface water, groundwater in and around t... more Cooum is one of the degraded sub basins in Tamil Nadu. Surface water, groundwater in and around the basin is polluted by factors such as industries and domestic waste etc. This paper highlights the importance of sewage inflow through Cooum inlets and assess quality of the surface water and groundwater influenced by the discharges in Cooum basin. Sewage inflow was highest in Elephant Gate Bridge (3039 Cum/day) and Annai Kasthuriba Nagar (2651 Cum/day). Surface water results exhibited higher pH, BOD, COD, chloride and zinc content. Groundwater quality of the study area has a higher pH of alkaline in nature and total dissolved solids in the range of 859-1611 mg/L. Sodium concentration was much higher than permissible limits (110-357 mg/L), and sulphate concentration was about 672 mg/L in Avadi region. Investigation was taken up for groundwater quality assessment through Water Quality Index, for drinking purpose, of open well in Cooum basin. Groundwater variables such as electrical conductivity values vary from 1760 to 2540 µS/cm. Analysis was taken for the parameters such as pH, electrical conductivity, total dissolved solids (TDS), calcium, magnesium, sodium, potassium, bicarbonates, chlorides, sulphates and nitrates. WQI ranges from 221 (very poor water) for Govindampadi to 321 for Avadi (unsuitable for drinking).
Remote Sensing, GIS and GPS plays a vital component in monitoring vineyard cultivation in a near ... more Remote Sensing, GIS and GPS plays a vital component in monitoring vineyard cultivation in a near real time manner for delivering appropriate management inputs. A crux of vineyard distribution according to climatic conditions and consequence of adverse climatic conditions on production of vine is dealt without ambiguity. Role of remote sensing (optical and hyperspectral) on vineyard distribution, discrimination by various techniques, deriving both biophysical and biochemical variables from satellite images and monitoring of vine at various growth stages has been reviewed extensively. Field management of irrigation and nutrient on vine has been detailed elaborately. Vine cultivation and its importance, rootstock development, vineyard establishment, canopy management, pest and disease monitoring are deliberated both by field approach and its assessment through remote sensing and Geographic Information System. Thus remote sensing and GIS tools provide valuable information to vine growers and policy planners to take appropriate measures for optimal growth and development of vine for sustainable production.
We presenting the results from a detailed study based on thirty three sediment samples were colle... more We presenting the results from a detailed study based on thirty three sediment samples were collected from Pulicat Lake during two seasons. The sand, silt and clay ration varies accordingly during premonsoon and post monsoon with variables at difference stations being observed. The maximum percentage of sand (95.85%) were seen near the bar mouth (Station 1) of Pulicat Lake with the average of 16.07% and 35.91% during post monsoon and premonsoon respectively. Silt percentage (average 14.55%) shows an increasing trend towards middle of the lake with maximum value at station 32. The clay content of sediments varies with the maximum values at station 18, 20 and 21 being minimum at 1, 2, and 3. This implies that the clay content shows an increasing trend towards the middle of the lake. The average value during premonsoon were 1.41% in comparison to post monsoon were 3.01%. The highest value were recorded at station 8 (4.10%), middle of the Lake during premonsoon with a minimum level at station 19 (0.20%).
We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measure... more We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measured in four organs (gills, liver, intestine and muscle) of two fish species (Labeo rohita and Cirrhina mrigala) collected from Pulicat lake that receives effluents from industries located in north Chennai, southeast coast of India. The results show limited differences between the two species and organs as well as significant variations within the five analyzed metals. Although the metal concentrations measured in fish muscle are low, high levels of Fe and Pb were observed in the liver and gills followed by other organs of the two fish species. The concentrations of heavy metals in edible parts (muscle) of fish were within the permissible levels and are safe for the human consumption. However the results of the study clearly show the biomagnifications of metals in Pulicat lake.
Water is an important component of living organisms, especially for human beings. The current stu... more Water is an important component of living organisms, especially for human beings. The current study of Chemberambakkam lake gave a lot of information about quality of the drinking water. The present paper showed the concentration of trace elements (Cd, Cr, Pb, Fe, Mn, Co, Ni, Zn, Cu) and cations like (Na, K, Ca, Mg) in the Lake water of the Chemberambakkam. The heavy metal concentration of Cd, Pb, Fe, co, and Ni were observed in high concentration than the WHO recommend level in the water, it means the Chemberambakkam lake water is highly contaminated from its surrounding industries. The analysis of date gave normal concentration of cations.
We presenting the results from a detailed study based on thirty three sediment samples were colle... more We presenting the results from a detailed study based on thirty three sediment samples were collected from Pulicat Lake during two seasons. The sand, silt and clay ration varies accordingly during premonsoon and post monsoon with variables at difference stations being observed. The maximum percentage of sand (95.85%) were seen near the bar mouth (Station 1) of Pulicat Lake with the average of 16.07% and 35.91% during post monsoon and premonsoon respectively. Silt percentage (average 14.55%) shows an increasing trend towards middle of the lake with maximum value at station 32. The clay content of sediments varies with the maximum values at station 18, 20 and 21 being minimum at 1, 2, and 3. This implies that the clay content shows an increasing trend towards the middle of the lake. The average value during premonsoon were 1.41% in comparison to post monsoon were 3.01%. The highest value were recorded at station 8 (4.10%), middle of the Lake during premonsoon with a minimum level at station 19 (0.20%).
Rasayan journal of chemistry/Rasayan journal of Chemistry, 2023
Ecology, Environment and Conservation
The impact of coastal erosion has adversely affected the socioeconomic conditions of the coastal ... more The impact of coastal erosion has adversely affected the socioeconomic conditions of the coastal communityworldwide. The coastal environment is experiencing a wide range of natural and anthropogenic pressurein India. The coastal zone has been receiving increased attention due to pressure of population growth,developmental activities, trade and transport and presence of vital and critical habitats. Severe coastalerosion, loss of marine ecosystem, industrial pollution, sedimentations in harbours and portsare some ofthe major concerns to the coastal zone managers. Thus, the presented study identifies the effects of existingmethods and suggesting an inventive structural measure to prevent the coastal erosion. Further, the suggestedmeasure supports the development of marine ecosystem as intact as an artificial coral reef which improvesthe coastal communityâslivelihoodsand sustenance of coastal ecosystem.
2021 International Conference on Advance Computing and Innovative Technologies in Engineering (ICACITE), 2021
Image compression is the process of compression an image in such a way that it has less space tha... more Image compression is the process of compression an image in such a way that it has less space than the original image. It is a classification of compression technique that reduces the size of an image file without affecting its quality to a greater extent. The biorthogonal transform used for decomposing the Lung images. After decomposition different methods of encoding are performed and finally the proposed compression methods are evaluated for finding optimum algorithm for Medical Image.
Global journal for research analysis, 2020
Water is essential element in the living being, at present water scarcity is the major crises in ... more Water is essential element in the living being, at present water scarcity is the major crises in Tamil Nadu state is taking into account that hydrologic time series are limited in Tamil Nadu, there is a strong need for hydrologic modeling tools that can be used to assess the effects of land use on the hydrologic cycle at a watershed scale with the available information. These hydrological models developed at a basin scale are required to improve the water resource management, which is a critical issue in most parts of Tamil Nadu, due to the reason we have selected Nandiar subbasin for our study. The objective of the present study is to evaluate the runoff, one of the output components of the hydrologic balance in the Nandiar sub-basin of Thiruvallur District of Tamil Nadu. An empirical rainfall-runoff model indicates the surface aspects of the catchments, which can be estimated by using Natural Resources Conservation Service - Curve Number (NRCS-CN) is a standout amongst those pract...
We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measure... more We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measured in four organs (gills, liver, intestine and muscle) of two fish species (Labeo rohita and Cirrhina mrigala) collected from Pulicat lake that receives effluents from industries located in north Chennai, southeast coast of India. The results show limited differences between the two species and organs as well as significant variations within the five analyzed metals. Although the metal concentrations measured in fish muscle are low, high levels of Fe and Pb were observed in the liver and gills followed by other organs of the two fish species. The concentrations of heavy metals in edible parts (muscle) of fish were within the permissible levels and are safe for the human consumption. However the results of the study clearly show the biomagnifications of metals in Pulicat lake.
Advances in Data Science, 2018
Sigma receptors belong to a class of small molecule-regulated, primarily endoplasmic reticulum (E... more Sigma receptors belong to a class of small molecule-regulated, primarily endoplasmic reticulum (ER) membrane-associated receptors, of which there are two subtypes: the Sigma-1 receptor (S1R) and the Sigma-2 receptor (S2R). Both S1R and S2R bind to a number of drugs including antipsychotic, haloperidol, and the opioid analgesic, (+)-pentazocine. Sigma receptors are implicated in multiple disease pathologies associated with the nervous system including diseases affecting motor control such as Amyotrophic Lateral Sclerosis (ALS) and Alzeimher's disease. This unit describes methods for the pharmacological characterization of S1R and S2R using radioligand-binding assays. In the first section, radioligand saturation binding assay to determine receptor densities and competitive inhibition assays to characterize affinities of novel compounds are presented for S1R using the selective S1R ligand, [ 3 H]-(+)-pentazocine. The second section describes radioligand saturation binding assay and competitive inhibition assays for the S2R using a non-selective S1R and S2R ligand, [ 3 H]-1,3-di(2-tolyl)guanidine ([ 3 H]-DTG).
Nature Environment and Pollution Technology, 2021
Groundwater is essential to the sustainability of India’s environment, economy, and living condit... more Groundwater is essential to the sustainability of India’s environment, economy, and living conditions because it isn’t just the primary source of domestic supply of water in rural areas, but it is also the major and most productive origin of the water. The increased demand for groundwater as a result of reduced rainfall has put a strain on groundwater resources in areas where groundwater is the primary supply of water. The main aim of this study is to identify and explore the groundwater potential zones in Talupula Mandal of 280.3 km2 in Ananthapur district in Andhra Pradesh, India with semi-arid climatic conditions. Based on the field survey approach, groundwater availability is found out in the villages. Schlumberger Vertical Electrical Sounding (VES) survey technique was used to discover the resistivity and thickness of the unmistakable layers. It was carried out in 18 randomly selected sites where groundwater plays an important role in agricultural and domestic use. The thicknes...
Nature Environment and Pollution Technology, 2021
Precipitation is the primary source of fresh water in the world. Surface runoff will happen when ... more Precipitation is the primary source of fresh water in the world. Surface runoff will happen when the amount of rainfall is greater than the soil’s infiltration capacity. In most water resource applications, runoff is the most important hydrological variable. Aside from these rainfall characteristics, there are a number of catchment-specific elements that have a direct impact on runoff amount and volume. This research focuses on estimating surface runoff over the lower Vellar basin, a river basin in the southern part of India, by integrating Soil Conservation Service-Curve Number (SCS-CN) method with GIS. This technique is one of the most common methods used by hydrologists for estimating surface runoff. Curve Number (CN) is an index established by the Natural Resource Conservation Service (NRCS) to denote the potential for stormwater runoff. The nature of the watershed is explored first by creating land use and land cover pattern followed by the preparation of slope, drainage, and l...
Water is an important component of living organisms, especially for human beings. The current stu... more Water is an important component of living organisms, especially for human beings. The current study of Chemberambakkam lake gave a lot of information about quality of the drinking water. The present paper showed the concentration of trace elements (Cd, Cr, Pb, Fe, Mn, Co, Ni, Zn, Cu) and cations like (Na, K, Ca, Mg) in the Lake water of the Chemberambakkam. The heavy metal concentration of Cd, Pb, Fe, co, and Ni were observed in high concentration than the WHO recommend level in the water, it means the Chemberambakkam lake water is highly contaminated from its surrounding industries. The analysis of date gave normal concentration of cations.
Rasayan Journal of chemistry, 2020
Concentrations of heavy metals namely Pb, Zn, Fe, Cu, Cd and Cr detected in tissue of two fish sp... more Concentrations of heavy metals namely Pb, Zn, Fe, Cu, Cd and Cr detected in tissue of two fish species (Pristipoma furcatus and Acanthurus strigosus) collected from Pulicate Lake, Chennai mixed with effluent from industries in and around north Chennai. The report shows significant results between the organs of P. furcatus and A. strigosus but also significant changes observed in all the metals determined in this study. The concentration of heavy metals in the fish tissue was medium to low. The organs of fish species measured high level of Lead and Iron. Trace metal levels in edible component tissue of fish were within the limit and good for consumption.
Cooum is one of the degraded sub basins in Tamil Nadu. Surface water, groundwater in and around t... more Cooum is one of the degraded sub basins in Tamil Nadu. Surface water, groundwater in and around the basin is polluted by factors such as industries and domestic waste etc. This paper highlights the importance of sewage inflow through Cooum inlets and assess quality of the surface water and groundwater influenced by the discharges in Cooum basin. Sewage inflow was highest in Elephant Gate Bridge (3039 Cum/day) and Annai Kasthuriba Nagar (2651 Cum/day). Surface water results exhibited higher pH, BOD, COD, chloride and zinc content. Groundwater quality of the study area has a higher pH of alkaline in nature and total dissolved solids in the range of 859-1611 mg/L. Sodium concentration was much higher than permissible limits (110-357 mg/L), and sulphate concentration was about 672 mg/L in Avadi region. Investigation was taken up for groundwater quality assessment through Water Quality Index, for drinking purpose, of open well in Cooum basin. Groundwater variables such as electrical conductivity values vary from 1760 to 2540 µS/cm. Analysis was taken for the parameters such as pH, electrical conductivity, total dissolved solids (TDS), calcium, magnesium, sodium, potassium, bicarbonates, chlorides, sulphates and nitrates. WQI ranges from 221 (very poor water) for Govindampadi to 321 for Avadi (unsuitable for drinking).
Remote Sensing, GIS and GPS plays a vital component in monitoring vineyard cultivation in a near ... more Remote Sensing, GIS and GPS plays a vital component in monitoring vineyard cultivation in a near real time manner for delivering appropriate management inputs. A crux of vineyard distribution according to climatic conditions and consequence of adverse climatic conditions on production of vine is dealt without ambiguity. Role of remote sensing (optical and hyperspectral) on vineyard distribution, discrimination by various techniques, deriving both biophysical and biochemical variables from satellite images and monitoring of vine at various growth stages has been reviewed extensively. Field management of irrigation and nutrient on vine has been detailed elaborately. Vine cultivation and its importance, rootstock development, vineyard establishment, canopy management, pest and disease monitoring are deliberated both by field approach and its assessment through remote sensing and Geographic Information System. Thus remote sensing and GIS tools provide valuable information to vine growers and policy planners to take appropriate measures for optimal growth and development of vine for sustainable production.
We presenting the results from a detailed study based on thirty three sediment samples were colle... more We presenting the results from a detailed study based on thirty three sediment samples were collected from Pulicat Lake during two seasons. The sand, silt and clay ration varies accordingly during premonsoon and post monsoon with variables at difference stations being observed. The maximum percentage of sand (95.85%) were seen near the bar mouth (Station 1) of Pulicat Lake with the average of 16.07% and 35.91% during post monsoon and premonsoon respectively. Silt percentage (average 14.55%) shows an increasing trend towards middle of the lake with maximum value at station 32. The clay content of sediments varies with the maximum values at station 18, 20 and 21 being minimum at 1, 2, and 3. This implies that the clay content shows an increasing trend towards the middle of the lake. The average value during premonsoon were 1.41% in comparison to post monsoon were 3.01%. The highest value were recorded at station 8 (4.10%), middle of the Lake during premonsoon with a minimum level at station 19 (0.20%).
We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measure... more We present the results from a detailed study based on five metals (Cr, Cd, Zn, Pb and Fe) measured in four organs (gills, liver, intestine and muscle) of two fish species (Labeo rohita and Cirrhina mrigala) collected from Pulicat lake that receives effluents from industries located in north Chennai, southeast coast of India. The results show limited differences between the two species and organs as well as significant variations within the five analyzed metals. Although the metal concentrations measured in fish muscle are low, high levels of Fe and Pb were observed in the liver and gills followed by other organs of the two fish species. The concentrations of heavy metals in edible parts (muscle) of fish were within the permissible levels and are safe for the human consumption. However the results of the study clearly show the biomagnifications of metals in Pulicat lake.
Water is an important component of living organisms, especially for human beings. The current stu... more Water is an important component of living organisms, especially for human beings. The current study of Chemberambakkam lake gave a lot of information about quality of the drinking water. The present paper showed the concentration of trace elements (Cd, Cr, Pb, Fe, Mn, Co, Ni, Zn, Cu) and cations like (Na, K, Ca, Mg) in the Lake water of the Chemberambakkam. The heavy metal concentration of Cd, Pb, Fe, co, and Ni were observed in high concentration than the WHO recommend level in the water, it means the Chemberambakkam lake water is highly contaminated from its surrounding industries. The analysis of date gave normal concentration of cations.
We presenting the results from a detailed study based on thirty three sediment samples were colle... more We presenting the results from a detailed study based on thirty three sediment samples were collected from Pulicat Lake during two seasons. The sand, silt and clay ration varies accordingly during premonsoon and post monsoon with variables at difference stations being observed. The maximum percentage of sand (95.85%) were seen near the bar mouth (Station 1) of Pulicat Lake with the average of 16.07% and 35.91% during post monsoon and premonsoon respectively. Silt percentage (average 14.55%) shows an increasing trend towards middle of the lake with maximum value at station 32. The clay content of sediments varies with the maximum values at station 18, 20 and 21 being minimum at 1, 2, and 3. This implies that the clay content shows an increasing trend towards the middle of the lake. The average value during premonsoon were 1.41% in comparison to post monsoon were 3.01%. The highest value were recorded at station 8 (4.10%), middle of the Lake during premonsoon with a minimum level at station 19 (0.20%).