Assessing the relationship and influence of black carbon on distribution status of organochlorines in the coastal sediments from Pakistan

Ali, Usman and Syed, Jabir Hussain and Junwen, Liu and Sánchez-García, Laura and Malik, Riffat Naseem and Chaudhry, Muhammad Jamshed Iqbal and Arshad, Masood and Li, Jun and Zhang, Gan and Jones, Kevin C. (2014) Assessing the relationship and influence of black carbon on distribution status of organochlorines in the coastal sediments from Pakistan. Environmental Pollution, 190. pp. 82-90. ISSN 0269-7491

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Abstract

Levels of total organic carbon (TOC) and black carbon (BC) were determined together with those of organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in the selected eighteen coastal sites (n = 285) along the Arabian Sea from Pakistan. Results showed that the total concentration of TOC, BC, ∑OCPs and ∑26PCBs ranged between 0.3 and 2.9% dw, 0.1-0.2% dw, 0.9-110 ng g(-1) dw and 6.2-1200 ng g(-1) dw, respectively. Correlation analysis of BC (r = 0.26-0.89) and TOC (r = 0.06-0.69) revealed a stronger association with studied compounds. The sedimentary depositional fluxes (D) for ∑OCPs and ∑26PCBs were calculated as 1.7 and 4.9 tons yr(-1), respectively. In the coastal belt of Pakistan, sedimentary mass inventories (I) indicated the presence of 13 and 37 metric tons of ∑OCPs and ∑26PCBs, respectively.

Item Type:
Journal Article
Journal or Publication Title:
Environmental Pollution
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3000/3005
Subjects:
ID Code:
70329
Deposited By:
Deposited On:
13 Aug 2014 10:50
Refereed?:
Yes
Published?:
Published
Last Modified:
11 Feb 2020 08:23