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Distribution patterns of octylphenol and nonylphenol in the aquatic system at Mai Po Marshes Nature Reserve, a subtropical estuarine wetland in Hong Kong |
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| Authors: | LI Xiang-li LUAN Tian-gang LIANG Yan WONG Ming-hung and LAN Chong-yu |
| Institution: | 1. Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China;State Key Laboratory of Biocontrol, School of life Sciences, Sun Yat-Sen Zhongshan University, Guangzhou 510275, China 2. State Key Laboratory of Biocontrol, School of life Sciences, Sun Yat-Sen Zhongshan University, Guangzhou 510275, China 3. Croucher Institute for Environmental Sciences and Department of Biology, Hong Kong Baptist University, Hong Kong, China |
| Abstract: | Spatial and temporal distribution of octylphenol (OP) and nonylphenol (NP) in Mai Po Marshes, a subtropical estuarine wetland in Hong Kong, were investigated. Surface water samples were collected every month from 11 sites during the period of September-December 2004. Concentrations of OP and NP ranged from 11.3 to 348 ng/L and from 29 to 2591 ng/L, respectively. The high levels of NP and OP were found in November and December than in September and October. The levels of OP and NP have no significant spatial differences except September. Total organic matter in the sediments appeared to be an important factor in controlling the fate of these compounds in the aquatic environment. |
| Keywords: | octylphenol nonylphenol endocrine-disrupting chemicals Ramsar Site Nature Reserve system aquatic environment nonylphenol patterns Distribution Hong Kong Total organic matter sediments factor controlling fate compounds significant spatial differences high levels Concentrations Surface |
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