Environmental monitoring of organo-halogenated contaminants (OHCs) in surface soils from Pakistan

Zehra, Ainy and Eqani, Syed Ali Musstjab Akber Shah and Katsoyiannis, Athanasios and Schuster, Jasmin K. and Moeckel, Claudia and Jones, Kevin C. and Malik, Riffat Naseem (2015) Environmental monitoring of organo-halogenated contaminants (OHCs) in surface soils from Pakistan. Science of the Total Environment, 506–50. pp. 344-352. ISSN 0048-9697

Full text not available from this repository.


Extensive monitoring of organo-halogenated contaminants (OHCs) from surface soils of different land-use types from Pakistan was carried out during 2010. The concentrations (ng g− 1; dry weight) and profiles clearly indicated the dominance of ∑ DDT contaminants followed by the ∑ HCHs, ∑30PCBs, chlordanes, and ∑10PBDEs in descending order. Concerning the spatial patterns of occurrence, industrial soils exhibited relatively higher concentration of DDTs, heavy PCBs, and PBDEs (noticeably BDE-47 and -99 congeners), while the urban soils were characterized by high total PCBs (with relatively higher levels of light PCBs), following the agricultural soils. Compared to available criterion guidelines, the current results suggested that 10% of soil samples from industrial sites exhibited slightly higher levels (> 50 ng g− 1) of DDTs. The ∑ TEQ levels for mono-ortho DL-PCBs ranged from 0.7 to 5.65 (1.9) pg TEQ g− 1 dw in all the studied samples and PCB-118 contributed significantly towards the total calculated TEQs. The results of this study will contribute to the environmental management of OHCs contaminated areas of Pakistan.

Item Type:
Journal Article
Journal or Publication Title:
Science of the Total Environment
Uncontrolled Keywords:
ID Code:
Deposited By:
Deposited On:
05 Jan 2016 14:52
Last Modified:
22 Nov 2022 02:43