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Concentrations and sources of short- and medium-chain chlorinated paraffins in farmed Chinese mitten crabs in China
Dong, S.; Zhang, S.; Zou, Y.; Fan, M.; Wang, Y.; Cheng, J.; Wang, R.; Li, T.; Li, X.; Wang, P. (2021). Concentrations and sources of short- and medium-chain chlorinated paraffins in farmed Chinese mitten crabs in China. J. Hazard. Mater. 411: 125076. https://dx.doi.org/10.1016/j.jhazmat.2021.125076
In: Journal of hazardous materials. Elsevier: Amsterdam; Lausanne; New York; Oxford; Shannon; Tokyo. ISSN 0304-3894; e-ISSN 1873-3336
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| Trefwoord |
Eriocheir sinensis H. Milne Edwards, 1853 [WoRMS]
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| Author keywords |
Chlorinated paraffin; Farmed crab; Crab food web; Distribution; Bioaccumulation |
| Auteurs | | Top |
- Dong, S.
- Zhang, S.
- Zou, Y.
- Fan, M.
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- Wang, Y.
- Cheng, J.
- Wang, R.
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| Abstract |
Aquatic foods are important sources of chlorinated paraffins (CPs) to humans. Farmed crabs are bottom-dwelling aquatic animals, and can accumulate CPs through food and aquatic environment. However, limited information is available on CPs concentrations in and sources to farmed crabs. In this study, short-chain CPs (SCCPs) and medium-chain CPs (MCCPs) concentrations in 59 samples from the farmed crab food web (crab, crab feed, and aquaculture environment) were determined. The samples were from 17 crab farms in Anhui Province, Jiangxi Province, and Shanghai, in China. The SCCPs and MCCPs concentrations in the crab samples were 82–1760 and not detected–680 ng/g lipid weight, respectively. The dominant SCCPs and MCCPs in the crab samples were C10Cl6−7 and C14Cl7−8, respectively. The SCCPs concentrations in the crab food web samples were higher than the MCCPs concentrations. SCCPs contamination of the crab food web samples was not directly related to CPs product use. The main factors affecting SCCPs concentrations in the crab samples were different for different crab farms. Crab feed and the aquaculture environment could be sources of SCCPs to farmed crabs. No marked health risks are posed to humans through consuming CPs in Chinese mitten crabs farmed in China. |
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