Determination of atmospheric heavy metals using two lichen species in Katni and Rewa cities, India bioindicator. Journal of Environmental Biology, 32(2): 195-199 (original) (raw)
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Determination of atmospheric heavy metal using two lichen species in Katni and Rewa cities, India
J. Environ. Biology, 2011
A biomonitoring study was conducted to assess the levels of atmospheric heavy metal pollution in Katni and Rewa cities of Madhya Pradesh, state in central India. The Pyxine cocoes and Phaeophyscia hispidula, two epiphytic foliose lichen were used as bioindicators in the present study and seven metals (As, Al, Cd, Cr, Fe, Zn, Pb) were analyzed in naturally growing thallus. The concentrations of these metals was observed to be in higher range as maximum values of Al, Cd, Cr and Zn were reported from the lichen samples from Rewa city which was 561.8±2.4, 6.8±0.8, 35.2±1.4, 214.6±2.0 µg g -1 dry weight respectively. Whereas As, Fe and Pb were reported maximum in the lichen samples collected from Katni city areas with 33.4±0.05, 689.4±2.6, 13.3±0.5 µg g -1 dry weight respectively. However the accumulation of Cd and Pb from both the cities are more or less similar in concentration. The selectivity sequence of metals were Fe>Al>Zn>As>Cr>Pb>Cd in Katni city, and Al>Fe>Zn>Cr>As>Pb>Cd in Rewa city. The findings of this study indicates that extent of heavy metal pollution in the atmosphere of the two cities which may lead to adverse health affects.
Determination of atmospheric heavy metals using two lichen species in Katni and Rewa cities, India
Journal of environmental biology / Academy of Environmental Biology, India, 2011
A biomonitoring study was conducted to assess the levels of atmospheric heavy metal pollution in Katni and Rewa cities of Madhya Pradesh, state in central India. The Pyxine cocoes and Phaeophyscia hispidula, two epiphytic foliose lichen were used as bioindicators in the present study and seven metals (As, Al, Cd, Cr, Fe, Zn, Pb) were analyzed in naturally growing thallus. The concentrations of these metals was observed to be in higher range as maximum values of Al, Cd, Cr and Zn were reported from the lichen samples from Rewa city which was 561.8 +/- 2.4, 6.8 +/- 0.8, 35.2 +/- 1.4, 214.6 +/- 2.0 microg g(-1) dry weight respectively. Whereas As, Fe and Pb were reported maximum in the lichen samples collected from Katni city areas with 33.4 +/- 0.05, 689.4 +/- 2.6, 13.3 +/- 0.5 microg g(-1) dry weight respectively. However the accumulation of Cd and Pb from both the cities are more or less similar in concentration. The selectivity sequence of metals were Fe>Al>Zn>As>Cr>...
Lichen as quantitative biomonitors of atmospheric heavy metals deposition in Central India
J. Atmospheric Chemistry , 2009
Three different growth forms of lichens belonging to six species; Phaeophyscia hispidula, Parmotrema praesorediosum (foliose); Caloplaca subsoluta, Diploschistes candi-dissmus (crustose) and Peltula euploca, Phylliscum indicum (squamulose) were studied comparatively for the biomonitoring of Al, Cd, Cr, Cu, Fe, Ni and Zn in Mandav city in central India. Based on the anthropogenic activities three sites were selected for lichen collection. To identify the sources of heavy metal pollution, their concentration was analyzed in thallus as well as in their respective substrates. The thallus of studied lichens showed higher concentration of metals such as Cd, Cr, Ni and Zn, while most of the metals were absent or present in negligible amount in substrates (Fe, Al, Cu), which proves that the accumulated metals were air borne. The foliose lichens (P. hispidula and P. praesorediosum) found highly significant in metal accumulation at each sites followed by crustose and squamulose forms. Lichen samples collected from site 2, adjacent to road side accumulated maximum quantities of Zn, Ni, Cd and Cr whereas the city centre (Site 1) had maximum concentrations of Fe, Cu and Al. The site 3 situated away from the city had lowest amount of all the metals. The analysis of variance and LSD indicated that the metal concentrations among lichen species as well as between substratum is significant at p<0.05% and P<0.01% level respectively.
Environmental Monitoring and Assessment, 2019
This study presents a comparative assessment of the trace metal air pollutants of urban, peri-urban, and rural areas of the Brahmaputra Valley plain in the Eastern Himalayan region using biomonitoring of Pyxine cocoes. In situ collection of the thalli growing on Bombax sp. from representative locations was done, which was analyzed for Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, Ni, Pb, and Zn using ICP-OES. The metals, viz. Cd, Cr, Ni, Pb, and Zn, were highly enriched, indicating anthropogenic influences. The coefficients of variation (CV) of Co, Cr, and Ni were also high, pointing at their accumulation from local sources. Influence of local sources was also observed for Cd, Fe, and Mn in peri-urban and Cd in urban samples. Metals related to automobiles were accumulated in greater volume in samples of peri-urban locations, which implies the impact of the highway that runs through these locations and other associated human activities. The samples of urban areas were found to be enriched with metals originating from both vehicular emissions and road dust. Also, accumulations of Co, Cr, Cu, Fe, Mn, and Ni in the lichen thalli were found to be around tea gardens. Inter-species correlations were found to be positively significant for most of the elements. Principal component analysis (PCA) of the metal data revealed that vehicular emission and coal burning, street dust, and crustal dust were the major sources of trace metals in the ambient air of the region.
2019
The present study was designed with an aim to observe the effect of increasing pollution level on native lichen diversity, metal accumulation and physiological changes around a coal-based thermal power plant of Kanti, Muzaffarpur districts of Bihar, India. Three lichen species namely Phaeophyscia hispidula (Ach.) Essl, Physcia dilatata Nyl., and Pyxine cocoes (Sw.) Nyl., were found growing in their natural habitat in vicinity of fly ash. Among these, Physcia dilatata Nyl., a common foliose lichen, was growing as a most dominant species at highly polluted sites. During present study the species was analyzed for six heavy metals (Fe, Pb, Cr, Zn, Ni and Cu) and further physiological changes at five different sampling sites. The test species accumulated maximum levels of Fe (10,923), Pb (389), Cr (151), Zn (142), Ni (73.5), and Cu (39.5) at highly polluted dumping sites. However, there was high spatial variability in total metal accumulation in different species indicated by coefficient...
The present study deals with an analysis of inorganic pollutants, their possible sources and effect on naturally growing Pyxine cocoes (Sw.) Nyl., a foliose lichen and Rinodina sophodes (Ach.) A. Massal., a crustose lichens around Panki Thermal Power Plant, Kanpur, Uttar Pradesh. The east direction of the thermal power plant which experiences heavy traffic activity showed complete absence of lichens while west side has the maximum number of lichen thalli. The result indicated that correlation analysis revealed that chlorophyll a, b, total chlorophyll, carotenoid, chlorophyll degradation was significantly correlated with each other whereas protein content showed negative correlation with chlorophyll a (-0.981), chlorophyll b (-0.97), total chlorophyll (-0.976), carotenoid (-0.935) and chlorophyll degradation (-0.994) in R. sophodes. All metals studied for both the species showed positive correlation matrix between the metals. The highest concentration of Fe, Mn, Zn and Pb were found at highly polluted areas with heavy traffic and road construction. The present study has established the utility of crustose and foliose growth forms of lichens in monitoring of environmental pollution in an area
Biomonitoring of Toxic Heavy metals in Kathmandu Valley using lichens
The concentrations of Pb, Cd and Cr in different places of Kathmandu were monitored through active and passive monitoring techniques, using lichens, during December 1999 to March 2000. Lead concentrations in transplanted lichen species in different sites of Kathmandu ranged from 5.10 mg/kg in Heterodermia sp. at Balkhu to 37.67 mg/kg in Parmelia reticulata at Gaushala. Mean concentration of lead varied from 12.50 mg/kg at Kirtipur to 96.74 mg/kg at Tripureshwor in lichens that were monitored passively. A significantly increased (P=0.05) level of cadmium accumulation was observed in lichens transplanted at Thamel, Chabil, Maitidevi and Bhadrakali than in other transplanted areas. Mean Cadmium concentrations in passively monitored lichens in different sites of Kathmandu ranged from 0.37 mg/kg in Heterodermia sp at Kirtipur to 2.72 mg/kg in Parmelia sp. at Airport. Chromium concentration in transplanted lichens at different sites of Kathmandu ranged from 2.9 mg/kg (at Putalisadak) to 14 mg/kg (at Chabhiel). Passively monitored lichens measured only 1.25 (at Airport) to 16.67 mg/kg (at Tripureshwor) of chromium. Both active and passive monitoring indicated that ambient air of the high vehicular traffic areas like Tripureshwor, Ratnapark, Bhadrakali, Gaushala, Kalanki, Maitidevi, Thamel and Chabiel are contaminated with heavy metals.
Lichens are useful biological indicators of environmental contamination for a variety of metals and radionuclide of both natural and artificial origin. In present study, an active biomonitoring study was carried out with a commonly growing foliose species of Dirinaria applanata (Fée) D.D. Awasthi, collected from Pichavaram mangroves of Tamil Nadu. A total of twelve metal (Al, Cd, Cr, Co, Cu, Fe, Hg, Mg, Mn, Ni, Pb and Zn) accumulated in the transplanted lichen thalli of Dirinaria applanata at four sites (Parangipettai, SIPCOT, Cuddalore OT and NT) were targeted. The transplantation site near SIPCOT, being an industrial area exhibited highest concentration of Al, Cd, Co, Cu, Fe, Hg, Mg and Mn than the other sites. Cr (1009.98±µg/g dw) and Ni (7.35± µg/g dw) were found to be more at Cuddalore OT having higher anthropogenic activities while Pb and Zn were recorded maximum at Cuddalore NT with more vehicular activity. The level of most of the metals reached above the EPA standard. The a...
Bulletin of Environmental Contamination and Toxicology, 2007
A regional study was conducted to assess the current level of atmospheric heavy metal pollution (Pb, Zn, Cr, Cu, Cd) in the Canakkale and Balikesir provinces of Turkey, and also to establish a baseline for future studies of atmospheric heavy metal pollution. The lichen Cladonia rangiformis was used for determining the distribution of heavy metals in the atmosphere. The highest concentration of all these elements was observed in the vicinity of Balikesir province where there is an abandoned lead–zinc main. On the other hand, apart from the mining area, the concentration of heavy metals was similar to the data reported for unpolluted areas. Maximum values of Pb, Zn, Cr, Cu, and Cd were 33.8, 47.6, 13.0, 5.29, and 0.69 mg/kg in dry weight, respectively. Spatial distribution of these elements, apart from Cr, was similar. Correlation coefficients between Zn–Pb, Cr–Zn, Cu–Pb, Cu–Zn, Cd–Zn, and Cd–Cr were high and positive, and indicated that they come from the same sources.