Authors: Olatz Zuloaga Ailette Prieto Kawser Ahmed Santosh Kumar Sarkar Asokkumar Bhattacharya Mousumi Chatterjee Bhaskar Deb Bhattacharya Kamala Kanta Satpathy
Publish Date: 2012/06/12
Volume: 68, Issue: 2, Pages: 355-367
Abstract
The present work is the first attempt to compare the data of a comprehensive study of the origin and distribution of 16 priority pollutant polycyclic aromatic hydrocarbons PAHs in surface sediments 63 μm from 18 sampling stations 9 from Sundarban of Bangladesh and 9 from Indian counterpart Σ19PAHs concentration in sediments showed wide variations from 2083 to 129931 ng g−1 dry weight in Indian Sundarban whereas 2084 to 46879 ng g−1 in the case of Bangladesh Fluoranthene pyrene benzobfluoranthene benzoapyrene and dibenzoahanthracene were predominant species for both the countries The PAH diagnostic ratios indicated that the PAHs in sediments from both the countries were of mixed source of hydrocarbons of both petrogenic and pyrolytic origin According to the numerical effectbased sediment quality guidelines the levels of PAHs in the Sundarban wetland of Bangladesh and India should not exert adverse biological effects The TEQ values calculated for samples from the Bangladesh and Indian Sundarban varied from 1368 to 101475 and 131 to 2451 ng g−1 dw with an average of 22102 and 35863 ng g−1 respectively The overall contamination status of PAH was higher in India than Bangladesh
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