Increased zooplankton PAH concentrations across hydrographic fronts in the East China Sea |
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| Authors: | Chin-Chang Hung Fung-Chi Ko Gwo-Ching Gong Kuo-Shu Chen Jian-Ming Wu Hsin-Lun Chiang Sen-Chueh Peng Peter H Santschi |
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| Institution: | 1. Department of Oceanography and Asia-Pacific Ocean Research Center, National Sun Yat-sen University, Kaohsiung 80424, Taiwan;2. Taiwan Ocean Research Institute, National Applied Research Laboratories, Kaohsiung, Taiwan;3. National Museum of Marine Biology and Aquarium, Pingtung 94450, Taiwan;4. Institute of Marine Biodiversity and Evolutionary Biology, National Dong Hwa University, Pingtung 94450, Taiwan;5. Institute of Marine Environmental Chemistry and Ecology, National Taiwan Ocean University, Keelung 20224, Taiwan;6. Department of Electrical Engineering, National Formosa University, Yunlin 63201, Taiwan;g Department of Marine Sciences, Laboratory for Oceanography and Environmental Research, Texas A&M University at Galveston, 200 Seawolf Parkway, Galveston, TX 77553, USA |
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| Abstract: | The Changjiang has transported large quantities of polycyclic aromatic hydrocarbons (PAHs) to the East China Sea (ECS), but information of these pollutants in zooplankton is limited. To understand PAHs pollution in zooplankton in the ECS, total concentrations of PAHs in zooplankton from surface waters were measured. Values of PAHs ranged from 2 to 3500 ng m−3 in the ECS, with highest PAHs levels located at the salinity front between the Changjiang Diluted Water (CDW) and the mid-shelf waters. In contrast, concentrations of zooplankton PAHs in the mid-shelf and outer-shelf waters were significantly lower (2–23 ng m−3) than those in the CDW. These results demonstrate that PAHs are conspicuously accumulated in zooplankton at the salinity front between the CDW and the mid-shelf waters. These higher levels of PAHs in zooplankton at the salinity front may be further biomagnified in marine organisms of higher trophic levels through their feeding activities. |
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| Keywords: | PAH Zooplankton East China Sea Salinity front |
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