ABSTRACT: Polychlorinated biphenyls (PCBs) measured in agricultural soils from north India. The ∑PCBs were range between <0.01 – 99.40 ng g-1 (dry wt.) with the mean of 13.44±0.06 ng g-1 (dry wt.). The concentration of DL-PCBs was ranged between 0.37-19.09 ng g-1 (dry wt.) with an average of 6.26±0.03 ng g-1 (dry wt.). PCB-105 (25%), PCB-114 (18%) and PCB-118 (18%), were the dominant congeners. Ortho PCBs account 61% and, non ortho PCBs contributed 18% to total DL-PCBs. The toxicity equivalent calculated using WHO 2005-TEFs and range from 0.01 to 105.40 pg WHO 2005-TEQ g-1 (dry wt.) with the mean of 13.78±0.11 pg WHO 2005-TEQ g-1 (dry wt.). PCBs contamination levels in soils from north India were lower than soil quality guidelines.
Organohalogen CompoundsVol. 73, 1900-1903 (2011). 01/2011;