Trophodynamics of arsenic for different species in coastal regions of the Northwest Pacific Ocean: In situ evidence and a meta-analysis
Autor: | Mengchang He, Baodong Wang, Ling Xu, Chunye Lin, Xiang Gu, Xitao Liu, Zongxing Wang, Jing Zhu, Wei Ouyang |
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Rok vydání: | 2020 |
Předmět: |
Pollution
China Environmental Engineering media_common.quotation_subject 0208 environmental biotechnology 02 engineering and technology 010501 environmental sciences 01 natural sciences Risk Assessment Arsenic Food chain Dry weight Animals Waste Management and Disposal 0105 earth and related environmental sciences Water Science and Technology Civil and Structural Engineering media_common Pacific Ocean biology Ecological Modeling Fishes Sediment δ15N biology.organism_classification Crustacean Hazard quotient 020801 environmental engineering Fishery Environmental science Bay Water Pollutants Chemical Environmental Monitoring |
Zdroj: | Water research. 184 |
ISSN: | 1879-2448 |
Popis: | China has been the major fishery producer in the Northwest Pacific Ocean for decades and the seafood safety deserves continuous concern. In this study, 188 organism and 27 sediment samples were collected from the Jiaozhou Bay, a typical semi-enclosed bay adjacent to the Northwest Pacific Ocean, to study the arsenic (As) pollution level and trophodynamics in the coastal regions of China combined with a meta-analysis. Results showed that arsenic was the most abundant in crustaceans with the average of 28.84 ± 4.95 mg/kg in dry weight, in comparison with molluscs (18.68 ± 2.51 mg/kg) and fish (9.31 ± 1.45 mg/kg). Additionally, based on a meta-analysis, arsenic in coastal organisms generally decreased from north to south in China. With increasing values of δ15N, arsenic was significantly biomagnified in the molluscs but bio-diluted in the groups of crustaceans and fish. When all the species were taken into consideration, overall bio-dilution of As was observed through the simplified food chain in the Jiaozhou Bay. Based on the target hazard quotient (THQ), the health risk of consuming seafood from the Jiaozhou Bay was not significant except for several kinds of crustaceans. The smaller THQs indicated lower health risk of eating molluscs and fish than crustaceans. Besides, urban households tended to undertake much higher risk than rural households. Based on our results, it is recommended for urban citizens to reduce the frequency of consuming crustaceans and give preference to fish when choosing seafood. |
Databáze: | OpenAIRE |
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