Back to Search
Start Over
Tagged sources of short-chain chlorinated paraffins in China's marine environment and fish
- Source :
- Chemosphere. 229:358-365
- Publication Year :
- 2019
- Publisher :
- Elsevier BV, 2019.
-
Abstract
- Most emitters of short chain chlorinated paraffins (SCCPs) in China are located in eastern China, posing potential risks to the marine environment and food web. Here we employed a comprehensive atmospheric transport model combined with multiple environmental compartment exchange modules and a marine food web model to simulate levels and risks of SCCPs in the marine environment and fish in the Yellow Sea (YS), East China Sea (ECS), and South China Sea (SCS). Results unveiled a decreasing SCCP level in seawaters and sediments towards offshore. The modeled SCCP total (dry + wet) loadings to the three seawater bodies ranged from 0.0013 to 0.1635 mg/m2/season and gaseous diffusive deposition ranged from 43 to 4443 kg/month. The meteorological factors and secondary emission contributing to seasonal changes in SCCPs were also discussed. A tagging technique was used to trace origins of SCCPs, demonstrating that source proximity contributes most in SCCP contamination to these seawater bodies. Modeled SCCP levels in 5 marine fish in the YS, ECS, and SCS ranged from 23 to 111 ng/g. Our results showed the current SCCP levels in the marine environment and fish did not pose exposure risks to fish consumers for different age groups and genders. However, if consumed fish were harvested and imported from more seriously contaminated seawaters by SCCPs, the estimated dietary intake (EDI) would considerably increase.
- Subjects :
- China
Food Chain
Environmental Engineering
Health, Toxicology and Mutagenesis
0208 environmental biotechnology
02 engineering and technology
010501 environmental sciences
Risk Assessment
01 natural sciences
Chlorinated paraffins
Hydrocarbons, Chlorinated
Animals
Humans
Environmental Chemistry
Seawater
0105 earth and related environmental sciences
Dietary intake
Fishes
Public Health, Environmental and Occupational Health
General Medicine
General Chemistry
Models, Theoretical
Contamination
Pollution
Food web
020801 environmental engineering
Deposition (aerosol physics)
Seafood
Paraffin
Environmental chemistry
Fish
Environmental science
Water Pollutants, Chemical
Environmental Monitoring
Subjects
Details
- ISSN :
- 00456535
- Volume :
- 229
- Database :
- OpenAIRE
- Journal :
- Chemosphere
- Accession number :
- edsair.doi.dedup.....f163cd7d47a7f6c60a9daa195d5db407