THE NATIONWIDE MONITORING OF PAHS AND OCPS IN SURFACE SEDIMENTS FROM THE FOUR MAJOR RIVER BASINS IN KOREA

摘要

We analyzed micropollutants contamination (13 organochlorine pesticides [OCPs] and 16 polycyclic hydrocarbons [PAHs]) in sediments from major 4 river basins in Korea and tried to investigate the source identification of these contaminants. The ∑PAHs concentration in river sediments ranged from ND to 1756 ng/g and the average values of Han river, Nakdong river, Yeongsan river and Geum river were 103.3±300.1, 66.6±167.2, 44.1±44.3 and 50.5±49 ng/g-dry, respectively. The highest ∑PAHs concentration was detected near the petro-chemical factories. Particularly, 3- and 4-ring PAHs (Phenanthrene, Fluoranthene, Pyrene, Benzo[b]fluoranthene, Chrysene, Benzo[a]anthracene, Anthracene and Benzo[k]fluoranthene) were most abundant. ∑PAHs concentration in sediments from the lake was higher than those from river. The average concentration of ∑PAHs in lake samples was 205.4 ng/g ranging from 4.0 to 2,987 ng/g-dry. The ∑DDTs concentration ranged from ND to 9.04 ng/g-dry with an average 1.03±0.69 ng/g-dry. p,p'- DDE was dominant compound and accounted for 61% of DDTs.