Polycyclic aromatic hydrocarbons (PAHs) and organochlorine pesticides (OCPs) in surface water samples from Humen tidal channel were identified and measured quantitatively, based on USEPA 8000 series methods and under quality assurance and quality control (QA/QC). The total (particulate plus dissolved phase) concentrations of PAHs in surface water from Humen tidal channel in both high flow season and low flow season were 786-964 ng/L and 11 360-19 603 ng/L respectively, and the total concentrations of OCPs in both seasons were 9.68-26.29 ng/L and 41.65-96.23 ng/L respectively. The average of concentrations of the 4 water samples from Humen tidal channel both in high flow season and in low flow season was used to estimate the annual fluxes of PAHs and OCPs. The results are as follows: the total PAHs (particulate and dissolved phase) flux from the Pearl River Artery to the Lingdingyang Estuary was 438.4?103 kg/a,and the flux of the particulate phase PAHs was 52.5?103 kg/a; the flux of 16 PAHs was estimated to be 247.9?103 kg/a. The total OCPs flux was 2.6?103 kg/a,of which the HCHs, DDTs and other OCPs were 1.1?103 kg/a,0.3?103 kg/aand 1.2?103 kg/a respectively.
YANG Qing-Shu, MAI Bi-Xian, FU Jia-Mo, SHENG Guo-Ying, LUO Xiao-Jun, LIN Zheng
. Fluxes of Persistent Organic Pollutants from Humen Tidal Channel of Pearl River to Lingdingyang Estuary[J]. SCIENTIA GEOGRAPHICA SINICA, 2004
, 24(6)
: 704
-709
.
DOI: 10.13249/j.cnki.sgs.2004.06.704
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