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Sherene, T.
- Quantification of Lead Fractions in Contaminated Soil Pedons of Coimbatore Industrial Belts, Tamil Nadu, India
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Authors
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1 Deptt. of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T. N., IN
1 Deptt. of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T. N., IN
Source
Nature Environment and Pollution Technology, Vol 11, No 3 (2012), Pagination: 397-401Abstract
The risk to the environment from contaminated soil can not be assessed by simply considering the total amount of potentially toxic metals within the soil because these metals are not necessarily completely mobile or bio-available. Hence, it is necessary to reduce the fraction of toxic elements that is potentially mobile or bio-available. Total lead varied from traces to 250.0 ppm. The amounts of other lead fractions were 0-1.31, 0-4.81, 0-85.81, 0-89.31, 0-63.52 and 0-50.81 ppm for water soluble, exchangeable and adsorbed, organically bound, carbonate bound, Fe-Mn oxide and residual fraction respectively. Bio-available form of lead is very dangerous and mostly seen in roadside profiles of Ganapathy and Ukkadam areas.Keywords
Contaminated Soil, Lead Pollution, Lead Fractions, Industrial Belts.Full Text
- Distribution of Different Fractions of Lead at Various Horizons of Contaminated Soil Pedons of Coimbatore District, Tamilnadu
Abstract Views :104 |
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Authors
Affiliations
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T. N., IN
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T. N., IN
Source
Nature Environment and Pollution Technology, Vol 9, No 2 (2010), Pagination: 447-452Abstract
The risk to the environment from contaminated soil can not be assessed by simply considering the total amount of potentially toxic metals within the soil because these metals are not necessarily completelymobile or bioavailable. Hence, it is necessary to reduce the fraction of toxic elements which is potentially mobile or bioavailable. Total lead varied from traces to 250 mg/L. The amounts of other lead fractions were 1.31, 4.81, 85.81, 89.31, 63.52 and 50.81mg/L for water soluble, exchangeable and adsorbed, organically bound, carbonate bound, Fe-Mn oxide, and residual fractions respectively. Mobile form of lead was very dangerous and mostly seen in roadside profiles of Ganapathy and Ukkadam.Keywords
Contaminated Soil, Lead Pollution, Lead Fractions.Full Text
- Effect of Dissolved Organic Carbon (DOC) on Heavy Metal Mobility in Soils
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Authors
Affiliations
1 Department of Soil Science and Agricultural Chemistry, Tamilnadu Agricultural University, Coimbatore-641 003, T.N., IN
1 Department of Soil Science and Agricultural Chemistry, Tamilnadu Agricultural University, Coimbatore-641 003, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 8, No 4 (2009), Pagination: 817-821Abstract
Dissolved organic carbon plays an important role in both carbon cycling and chemistry of soils, through its influence on acidity, nutrient availability, metal toxicity and transport. Addition of biological waste materials such as sewage sludge, poultry and animal manures increases the amount of DOC in soils. The effect of DOC on heavy metal mobility was well recognized in this study. In organic matter rich soils, solubilization of organic matter leads to production of more amount of DOC which combines with heavy metals in soils and, thus, causes contamination to groundwater. The organic acids present in the DOC can act as chelating agents and enhance the mobilization of toxic heavy metals. In another way, it is beneficial that the toxic heavy metals are mobilized away from the ischolar_main zone, thus, preventing accumulation of heavy metals in usable parts of the plants.Keywords
Heavy Metals, Dissolved Organic Carbon, Biological Wastes, Groundwater, Mobilization of Metals.Full Text
- Heavy Metal Status of Soils in Industrial Belts of Coimbatore District, Tamil Nadu
Abstract Views :99 |
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Authors
Affiliations
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T.N., IN
1 Department of Soil Science and Agricultural Chemistry, Tamil Nadu Agricultural University, Coimbatore-641 003, T.N., IN
Source
Nature Environment and Pollution Technology, Vol 8, No 3 (2009), Pagination: 613-618Abstract
A study was conducted to investigate the heavy metal contamination of soils in the vicinity of industries in and around Coimbatore city of Tamil Nadu. Categorically the soils were collected from electroplating, textiles, casting, foundry and sewage water irrigated fields. The concentration of total Cd , Cu , Mn , Fe , Pb , Ni, Cr, Zn ranged from 0.3-4.6, 18.4-404.2, 28.1-2514.72, 2064.83-8577.14, 7-170, 3.0-157.0, 3.3-593.99, 14.56-651.82 mg/kg respectively. The total metal content was high in soils of electroplating industries. In all the industries, Cd was found above the background metal levels. The total Ni concentration was very high in sewage water irrigated fields followed by electroplating industries. Most of the metals in contaminated soils were in the value of maximum tolerable level in the vicinity of industrial sites of Coimbatore city.Keywords
Industrial Wastes, Heavy Metals, Soil Contamination, Industrial Belts.Full Text