TY - JOUR
T1 - Distribution of organochlorines in the dissolved and suspended phase of the sea-surface microlayer and seawater in Hong Kong, China
AU - Wurl, Oliver
AU - Obbard, Jeffrey Philip
AU - Lam, Paul Kwan Sing
N1 - Funding Information:
The authors gratefully acknowledge the financial support of this research project by the City University of Hong Kong, the Area of Excellence Scheme under the University Grants Committee of the Hong Kong Special Administration Region, China (Project No. AoE/P-04/2004), the National University of Singapore, the governmental agency A*Star, Singapore and the Tropical Marine Science Institute of the National University of Singapore.
PY - 2006
Y1 - 2006
N2 - Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were measured in the dissolved and suspended particulate phase in the sea-surface microlayer (SML) and subsurface water (SSW) collected from Hong Kong's coastal environment. The concentration ranges (pg/L) for ∑HCHs, ∑DDTs and ∑PCBs in the SSW dissolved phase (DP i.e. sum of truly dissolved and colloidal phase) were 409-940 (mean 602), 774-5583 (mean 1908) and 266-433 (mean 278), respectively. The concentration ranges (pg/L) for ∑HCHs, ∑DDTs and ∑PCBs in SSW suspended particulate matter (SPM) were <5-85 (mean 59), 358-1369 (mean 787) and 85.6-273 (mean 172), respectively. The enrichment factor of PCBs and OCPs in the SML varied between 1.1 and 4.5 for the DP, and 0.4-8.2 for the SPM. The distribution of contaminants between DP and SPM in both the SML and SSW indicates that particulate matter plays an important role in the distribution and fate of DDTs and PCBs, but not for HCH isomers. The Pearl River Estuary is likely to be a major source of contaminants transported to Hong Kong.
AB - Polychlorinated biphenyls (PCBs) and organochlorine pesticides (OCPs) were measured in the dissolved and suspended particulate phase in the sea-surface microlayer (SML) and subsurface water (SSW) collected from Hong Kong's coastal environment. The concentration ranges (pg/L) for ∑HCHs, ∑DDTs and ∑PCBs in the SSW dissolved phase (DP i.e. sum of truly dissolved and colloidal phase) were 409-940 (mean 602), 774-5583 (mean 1908) and 266-433 (mean 278), respectively. The concentration ranges (pg/L) for ∑HCHs, ∑DDTs and ∑PCBs in SSW suspended particulate matter (SPM) were <5-85 (mean 59), 358-1369 (mean 787) and 85.6-273 (mean 172), respectively. The enrichment factor of PCBs and OCPs in the SML varied between 1.1 and 4.5 for the DP, and 0.4-8.2 for the SPM. The distribution of contaminants between DP and SPM in both the SML and SSW indicates that particulate matter plays an important role in the distribution and fate of DDTs and PCBs, but not for HCH isomers. The Pearl River Estuary is likely to be a major source of contaminants transported to Hong Kong.
KW - Hong Kong
KW - Organochlorines
KW - Persistent organic pollutants
KW - Sea-surface microlayer
KW - Seawater
UR - http://www.scopus.com/inward/record.url?scp=33746357271&partnerID=8YFLogxK
U2 - 10.1016/j.marpolbul.2005.11.024
DO - 10.1016/j.marpolbul.2005.11.024
M3 - Article
C2 - 16403537
AN - SCOPUS:33746357271
SN - 0025-326X
VL - 52
SP - 768
EP - 777
JO - Marine Pollution Bulletin
JF - Marine Pollution Bulletin
IS - 7
ER -