@article{b6974f8bbee849bb866bc521edebc40c,
title = "Aquaculture-derived enrichment of hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) in coastal sediments of Hong Kong and adjacent mainland China",
abstract = "To evaluate contamination of sediments along the coast of Hong Kong and adjacent mainland China, concentrations of hexachlorocyclohexanes (HCHs) and dichlorodiphenyltrichloroethanes (DDTs) in surface and core sediments were measured in six mariculture zones. In surface sediments (0 to 5cm), concentrations of ∑HCHs and ∑DDTs in mariculture sediments were approximately 1.3- and 7.7-fold greater, respectively, than those detected in sediments at corresponding reference sites, which were 1 to 2km away in areas where there was no mariculture. Similarly, in cores of sediments, concentrations of ∑HCHs and ∑DDTs were 1.2- and 14-fold greater in mariculture zones, respectively. Enrichment relative to regional background concentrations, expressed as percentages was as large as 8.67×103% for o,p'-DDD. The major sources of the enriched organochlorine pesticides (OCPs) were hypothesized to be derived from the use of contaminated fish feeds and anti-fouling paints for maintaining fish cages. Results of ecological risk assessments revealed that enriched OCPs had a large potential to contaminate the surrounding marine environment and lead to adverse effects on the associated biota. To our knowledge, this is the first study to evaluate the differences of OCP contaminations between mariculture and natural coastal sediments.",
keywords = "DDTs, HCHs, Mariculture, OCPs, Pesticides, Sediments",
author = "Wang, {Hong Sheng} and Chen, {Zhuo Jia} and Zhang Cheng and Jun Du and Man, {Yu Bon} and Leung, {Ho Man} and Giesy, {John P.} and Wong, {Chris K.C.} and Wong, {Ming Hung}",
note = "Funding Information: The authors thank Dr. X. L. Sun and Mr. K.W. Chan for technical assistance. This research was supported by the National Natural Science Foundation of China (Grant No. 31101071), the Seed Collaborative Research Fund from the State Key Laboratory in Marine Pollution (SCRF0003), the National Basic Research Program of China (973 Program, No. 2011CB9358003), the China Postdoctoral Science Foundation (No. 2012M511868), the Fundamental Research Funds for the Central Universities (Sun Yat-sen University) (No. 12ykpy09), and the Science and Technology Planning Project of Guangdong Province, China (No. 2012B031500005). Prof. Giesy was supported by the Canada Research Chair program. He was also supported by the 2012 program of “High Level Foreign Experts” (#GDW20123200120) funded by the State Administration of Foreign Experts Affairs, the P.R. China to Nanjing University and the Einstein Professor Program of the Chinese Academy of Sciences and a Visiting Distinguished Professorship in the Department of Biology and Chemistry and State Key Laboratory in Marine Pollution, City University of Hong Kong. Publisher copyright: {\textcopyright} 2013 Published by Elsevier B.V.",
year = "2014",
month = jan,
day = "1",
doi = "10.1016/j.scitotenv.2013.07.027",
language = "English",
volume = "466-467",
pages = "214--220",
journal = "Science of the Total Environment",
issn = "0048-9697",
publisher = "Elsevier B.V.",
}