1 research outputs found
Not Available
Not AvailableFarmers in developing countries irrigate crops
using raw urban and industrial effluents with consequent
risks from metal contamination. Therefore, soils, crops and
groundwater from an effluent irrigation use site were
assessed for Cd, Cr, Ni and Pb. Total and available contents
of metals in soil followed the order Pb Ni Cr Cd.
Crops accumulated more Pb, followed by Cd, Ni and Cr.
Pb exceeded the permissible limit with wastewater irrigation
only, but Cd exceeded the limit even with combined
irrigations of wastewater and groundwater. Among crops,
sugar beet assimilated highest Cd (3.14 lg g - 1) and Pb
(6.42 lg g - 1) concentrations. Legumes accumulated more
metals than cereals. Long - term use of wastewater and its
conjunctive use with groundwater led to toxic accumulations
of Cd, Pb, Ni and Cr. Cd with higher availability and
mobility indices and lower toxicity limit, posed the maximum
risk of food - chain contamination.Not Availabl