PMID- 33162245 OWN - NLM STAT- MEDLINE DCOM- 20210527 LR - 20210527 IS - 1873-3336 (Electronic) IS - 0304-3894 (Linking) VI - 406 DP - 2021 Mar 15 TI - Emerging POPs-type cocktail signatures in Pusa caspica in quantitative structure-activity relationship of Caspian Sea. PG - 124334 LID - S0304-3894(20)32324-4 [pii] LID - 10.1016/j.jhazmat.2020.124334 [doi] AB - The Caspian seal Pusa caspica is the only endemic mammalian species throughout the Caspian Sea. This is the first report on risk assessment of persistent organic pollutants (POPs) in Caspian seals by age-sex and tissue-specific uptake, and their surrounding environment (seawater, surface sediments, and suspended particulate matters, SPMs) in the Gorgan Bay (Caspian Sea, Iran). Among the quantified 70 POPs ( summation operator(35)PCBs, summation operator(3)HCHs, summation operator(6)CHLs, summation operator(6)DDTs, summation operator(17)PCDD/Fs, HCB, dieldrin, and aldrin), summation operator(35)PCBs were dominant in abiotic matrices (48.80% of summation operator(70)POPs), followed by HCHs > CHLs > DDTs > PCDD/Fs > other POPs in surface sediments > SPMs > seawater, while the toxic equivalent quantity (TEQ(WHO)) exceeded the safe value (possible risk in this area). In biota, the highest levels of summation operator(70)POPs were found in males (756.3 ng g(-1) dw, p < 0.05), followed by females (419.0 ng g(-1) dw) and pups ((1)91.6 ng g(-1) dw) in liver > kidney > muscle > blubber > intestine > fur > heart > spleen > brain. The positive age-related POPs declining correlation between mother-pup pairs suggested the possible maternal transfer of POPs to offspring. The cocktail toxicity assessment revealed that Caspian seals can pose a low risk based on their mixed-TEQ values. Self-organizing map (SOM) indicated the non-coplanar PCB-93 as the most over-represented functional congener in tissue-specific POPs bioaccumulation. Quantitative toxicant tissue-profiling is valuable for predicting the state of mixture toxicity in pinniped species. CI - Copyright (c) 2020 Elsevier B.V. All rights reserved. FAU - Ranjbar Jafarabadi, Ali AU - Ranjbar Jafarabadi A AD - Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran. FAU - Mashjoor, Sakineh AU - Mashjoor S AD - Department of Marine Biology, Faculty of Marine Science and Technology, University of Hormozgan, Bandar Abbas, Iran. FAU - Mohamadjafari Dehkordi, Shirin AU - Mohamadjafari Dehkordi S AD - Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran. FAU - Riyahi Bakhtiari, Alireza AU - Riyahi Bakhtiari A AD - Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Noor, Mazandaran, Iran. Electronic address: ali.ranjbar@modares.ac.ir. FAU - Cappello, Tiziana AU - Cappello T AD - Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Messina, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201031 PL - Netherlands TA - J Hazard Mater JT - Journal of hazardous materials JID - 9422688 RN - 0 (Dibenzofurans) RN - 0 (Environmental Pollutants) RN - 0 (Polychlorinated Dibenzodioxins) RN - 0 (Water Pollutants, Chemical) RN - DFC2HB4I0K (Polychlorinated Biphenyls) SB - IM MH - Animals MH - Caspian Sea MH - Dibenzofurans MH - Environmental Monitoring MH - *Environmental Pollutants/analysis MH - Female MH - Iran MH - Male MH - *Polychlorinated Biphenyls/analysis MH - *Polychlorinated Dibenzodioxins/analysis MH - Quantitative Structure-Activity Relationship MH - *Water Pollutants, Chemical/analysis OTO - NOTNLM OT - Caspian Sea OT - Marine mammals OT - Mixture toxicity OT - Organo-chlorine pesticides OT - Polychlorinated biphenyls OT - Self-organizing map EDAT- 2020/11/10 06:00 MHDA- 2021/05/28 06:00 CRDT- 2020/11/09 05:27 PHST- 2020/06/17 00:00 [received] PHST- 2020/10/17 00:00 [revised] PHST- 2020/10/17 00:00 [accepted] PHST- 2020/11/10 06:00 [pubmed] PHST- 2021/05/28 06:00 [medline] PHST- 2020/11/09 05:27 [entrez] AID - S0304-3894(20)32324-4 [pii] AID - 10.1016/j.jhazmat.2020.124334 [doi] PST - ppublish SO - J Hazard Mater. 2021 Mar 15;406:124334. doi: 10.1016/j.jhazmat.2020.124334. Epub 2020 Oct 31.