Muhammad Ehsan
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
Polile Augustine Molumeli
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
Vicente Espinosa Hernandez
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
Alejandro Baeza Reyes
Faculty of Chemistry, National Autonomous University of Mexico, Mexico
Jesus Perez Moreno
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
Marcos Soto Hernandez
Department of Botany,
Postgraduate College of Agricultural Sciences, Km 36.5 Can-etera Mex-texcoco, Montecillo, Edo. de Mexico
Enrique Ojeda Trejo
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
David Jaen Contreras
Department of Flilticulture, Postgraduate College of Agricultural Sciences,
Km 36.5 Can-etera Mex-texcoco, Montecillo, Edo. de Mexico
Alejandrina Ruiz Bello
Department of Soil Science, Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
Edmundo Robledo Santoyo
Department of Soil Science, University of Chapmgo, Km 38.5 Carretera Mexico-Texcoco,
Tex-coco, Edo de Mexico, C.P. 56230, Mexico, Mexico
ABSTRACT
Knowledge of plant available fractions of heavy metals in soil can assist directing phytoremediation efforts for contaminated soils. For this reason different doses of ZnCl2 (0, 200, 400 and 600 mg kg-1) and CdCl2, 2½ H2O (0, 9, 18 and 27 mg kg-1) were applied to an uncontaminated slightly acidic clay loam soil from Sate of Mexico, Mexico incubated under ambient temperature and humidity for 90 days. Both the metals were extracted with a DTPA-TEA-CaCl2 mixture after 1, 5, 15, 25, 60 and 90 days and analyzed using atomic absorption spectroscopy. The results showed that DTPA extractable contents of Zn and Cd followed a decreasing trend with increase in incubation time. Maximum contents were found at day 01 in all the treatments. After 15 days of incubation, the variation in extractable contents was non-significant. The rapid adsorption of the metals might be due to elevated clay content (34%) of the incubated soil.
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How to cite this article
Muhammad Ehsan, Polile Augustine Molumeli, Vicente Espinosa Hernandez, Alejandro Baeza Reyes, Jesus Perez Moreno, Marcos Soto Hernandez, Enrique Ojeda Trejo, David Jaen Contreras, Alejandrina Ruiz Bello and Edmundo Robledo Santoyo, 2007. Contamination Time Effect on Plant Available Fractions of Cadmium and Zinc in a Mexican Clay Loam Soil. Journal of Applied Sciences, 7: 2380-2384.
DOI: 10.3923/jas.2007.2380.2384
URL: https://scialert.net/abstract/?doi=jas.2007.2380.2384
DOI: 10.3923/jas.2007.2380.2384
URL: https://scialert.net/abstract/?doi=jas.2007.2380.2384
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