Occurrence and distribution of anthropogenic persistent organic pollutants in coastal sediments and mud shrimps from the wetland of central Taiwan

English version

Autoři: Shagnika Das ^aff001; Andres Aria ^aff003; Jing-O Cheng ^aff005; Sami Souissi ^aff002; Jiang-Shiou Hwang ^aff001; Fung-Chi Ko ^aff005
Působiště autorů: Institute of Marine Biology, National Taiwan Ocean University, Keelung, Taiwan ^aff001; University Lille, CNRS, University Littoral Cote d’Opale, UMR 8187, LOG, Laboratoire d’Océanologie et de Géosciences, Wimereux, France ^aff002; Argentine Institute of Oceanography, Bahia Blanca, Argentina ^aff003; National South University, Chemistry Department, Area III, Bahía Blanca, Argentina ^aff004; National Museum of Marine Biology and Aquarium, Checheng, Pingtung, Taiwan ^aff005; Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan ^aff006; Institute of Marine Biology, National Dong-Hwa University, Pingtung, Taiwan ^aff007
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
prolekare.web.journal.doi_sk: https://doi.org/10.1371/journal.pone.0227367

Souhrn

Sediment profile and mud shrimp (Austinogebia edulis) from the coastal wetland of central Taiwan in 2017 and 2018 were analyzed for concentration, source, and composition of persistent organic pollutants (POPs) including polycyclic aromatic hydrocarbon (PAHs), polybrominated diphenyl ethers (PBDEs), organochlorine pesticides (OCPs; DDT and HCB), and polychlorinated biphenyls (PCBs). Sediment profiling indicated PAH concentrations reaching 254.38 ng/g dw in areas near industrial areas and PAH concentrations of 41.8 and 58.42 ng/g dw in sampling areas further from industrial areas, suggesting that the determining factor for spatial distribution of POPs might be proximity to contaminant sources in industrial zones. Based on molecular indices, PAHs were substantially of both pyrolytic and petrogenic origins. The main sources for PCBs were Aroclor 1016 and 1260 and the congener BDE-209 was the dominant component among PBDE congeners. While we were unable to obtain live mud shrimp samples from the heavily contaminated areas, in samples from less contaminated areas, the risk assessment on mud shrimp still illustrated a borderline threat, with DDT concentrations almost reaching standardized values of Effects Range-Low (ERL). Bioaccumulation factors for DDTs and PCBs (17.33 and 54.59, respectively) were higher than other POPs in this study. Further study is essential to assess and understand the impact of these chemicals on the wetland ecosystem near this heavily industrialized area.

Klíčová slova:

Shrimp – Contaminants – Sediment – Pollutants – Crabs – Petroleum – Combustion – DDT

Zdroje

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