Potential ecological risk, in-situ phytoextraction potential of Lycopersicon esculentum, and pollution indices of selected toxic metals in Hausawan - Kaba, Kano State, Nigeria (original) (raw)
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This study investigated the concentration and bioaccumulation of Heavy metals of plants within waste dumpsites in Ozoro, South-South Nigeria. The soil and plants parts (Root and shoot) were obtained from the dumpsite and at a farm land far away from the dumpsite (Control site). The soil and plant parts were digested using aqua regia and analysed for heavy metals using Atomic Absorption Spectrophotometer (Buck 200A model). Musa paradisiacal (Plantain), Manihot esculenta (Cassava), Colocasia esculenta (Cocoyam) and Carica papaya (Pawpaw) were studied. The heavy metals cadmium, copper, Iron, lead, manganese and zinc were analyzed. The metal concentration in mg/kg ranged thus; Cd (0.01 – 0.06); Cu (0.01 – 0.08); Fe (0.01 – 0.08); Pb (0.01 – 0.07); Mn (0.01 – 0.06) and Zn (0.01 – 0.05). The metal concentrations in the dumpsite soil and plants were relatively higher than those from the control site. Musa paradisiacal and Manihot esculenta had their heavy metals concentrations accumulated more in the roots than in the shoots while Colocasia esculenta and Carica papaya had heavy metal concentration more in the shoot than in the root. Bioaccumulation Factor of the studied plants showed that Musa paradisiacal is a bioaccumulator for Manganese, Manihot esculenta and Colocasia esculenta are bioaccumulators for cadmium while Carica papaya is a bioaccumulator for Cadmium, copper and Iron. Translocation Factor (TFRoot to Shoot) of the heavy metals in Musa paradisiacal and Manihot esculenta were all less than 1 while the (TFRoot to Shoot) for Colocasia esculenta and Carica papaya were all greater than 1 indicating easy translocation of the metals to the shoot by Colocasia esculenta and Carica papaya. The Translocation Factor (TFSoil to Root) for cadmium was greater than 1 for all the plants except Carica papaya. Copper and Iron had TFSoil to root greater than 1 in Manihot esculenta while manganese had TFSoil to root greater than 1 in Musa paradisiacal implying easy translocation of the metals from soil to root. The Enrichment Factor of the heavy metals were all greater than 1 which implies that the metals are all readily available for absorption by the plants. The metal concentrations were less than FAO/WHO guidelines except lead. The ease at which cadmium and lead were translocated from the root to the shoot calls for concern. Therefore planting of crops around dumpsite soils should be discontinued with in order to safeguard our health.
Hazardous Waste Management Approach for Heavy Metals in Soil by Phytoremediation
Indian Journal of Botany, 2021
There have been a lot of practical applications of phytoremediation in the last ten years, involving organic, inorganic, heavy metal, and radionuclide remediation. India would find this to be an excellent alternative to conventional remediation methods as it is a sustainable and inexpensive process. The huge retention of industrial waste in soil resulted in soil pollution which is more hazardous due to the long-term persistence of contaminants. A major source of hazardous waste products in Bhopal city is the industrial region. Near residential areas, industries produce pollution that can be very harmful to human health. The objective of this research was to determine which heavy metal accumulators are capable of absorption and translocation of heavy metals. In the Govindpura sampling sites, Cr and Ni concentrations were higher, while Cd concentrations were lower. Phytoremediation was conducted by comparing the heavy metal accumulation of Datura inoxia, Calotropis procera, Ricinus co...
A Study of the Uptake of Heavy Metals by Plants near Metal-Scrap Dumpsite in Zaria, Nigeria
Journal of Applied Chemistry, 2014
The research work investigates the metal uptake of the plants Lycopersicon esculentum (tomato), Rumex acetosa (sorrel), and Solanum melongena (garden egg) collected from experimental sites and a control area in Zaria, Nigeria. The concentrations of Cd, Cu, Fe, Pb, Mn, and Zn in different parts of each of the plant species grown on the experimental and control soils were determined using atomic absorption spectrophotometry. The experimental levels of the metals were higher than those at the control site and the limits recommended by Food and Agricultural Organisation/World Health Organisation (FAO/WHO). Solanum melongena showed bioaccumulation factor (BF) and transfer factor (TF) greater than 1 for Cd, Pb, and Mn; Rumex acetosa showed BF and TF greater than 1 for Mn and Zn, and TF was greater than 1 for Cu and Fe; Lycopersicon esculentum had only the TF for Fe, Pb, Mn, and Zn greater than 1. This results implies that Solanum melongena and Rumex acetosa plants can be effectively used ...
International Journal of Science for Global Sustainability
Plant’s accumulation and translocation potentials were investigated for phytoremediation purposes, recovery of metals, potential for edibles/vegetables to cause harm to humans. Plant and soil were collected, prepared, digested in mixturesof H2O2-HNO3 and Li2B4O7-LiBO2 for plants and soils respectively. The concentrations of Co, Cd, Cr, and As, accumulation and translocation were determined. Data were evaluated using bioconcentration (BCF), translocation factor (TF), bioaccumulation coefficient (BAC), metal uptake efficiency (ME%), multivariate analyses to establish hyperaccumulators, phytoextractors, phytostabilizers, source of metals and theirtoxicity. Analysis of variance (ANOVA) showed data were significant at p <0.05. Correlation,factor and cluster analyses were employed to understand the accumulation and translocation of metals in soils and plants tissues.From this study, Colocasia asculenta, Corchorus aestuans and Laportea aestuans were hyperaccumulators of Co. Arsenic had...