PMID- 29550435 OWN - NLM STAT- MEDLINE DCOM- 20180808 LR - 20181202 IS - 1090-2414 (Electronic) IS - 0147-6513 (Linking) VI - 156 DP - 2018 Jul 30 TI - The implications of water extractable organic matter (WEOM) on the sorption of typical parent, alkyl and N/O/S-containing polycyclic aromatic hydrocarbons (PAHs) by microplastics. PG - 176-182 LID - S0147-6513(18)30205-7 [pii] LID - 10.1016/j.ecoenv.2018.03.021 [doi] AB - Microplastics sorption of persistent organic pollutants (POPs) was the core processes that cause negative effects to biota, and their influencing factors and related mechanisms are poorly understood. In this study, we explored the impacts of water extractable organic matter (WEOM), an important source of endogenous dissolved organic matter in mangrove sediment, on the sorption coefficients of typical parent, alkyl and N/O/S-containing polycyclic aromatic hydrocarbons (PAHs) by microplastics. The presence of L-WEOM (D) impeded the PAHs sorption as the coefficients (K(f)) decreased to 10.17 (mug/kg)/(mug/L)(n) and to 8.39 (mug/kg)/(mug/L)(n) for fluorene (Flu) and 1-methyl-fluorene (1-M-Flu), respectively. The K(f) exhibited good linear relationships with the aliphaticity of L-WEOM (p < 0.05) rather than the aromatic carbon/alkyl carbon content (p > 0.05). Under the presences of L-WEOM (D), (S) and (K), the lone pair electrons of N/O/S-containing PAHs was the dominant factor contributing to the obvious difference of the K(f) values from the other groups. Moreover, the largest impact of L-WEOM (D) on the Flu sorption was in the case of PVC microplastics, while almost no effect was in the case of PS microplastics. The findings of our work may be helpful in improving our understanding of the role of WEOM on the sorption of PAHs to microplastics in the field mangrove sediment. CI - Copyright (c) 2018 Elsevier Inc. All rights reserved. FAU - Li, Ruilong AU - Li R AD - School of Marine Sciences, Guangxi University, Nanning 530004, PR China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China. FAU - Tan, Huadong AU - Tan H AD - Environment and Plant Protection Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou 361102, PR China; Danzhou Scientific Observing and Experimental Station of Agro-Environment, Ministry of Agriculture, Danzhou 571737, PR China. FAU - Zhang, Linlin AU - Zhang L AD - School of Marine Sciences, Guangxi University, Nanning 530004, PR China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China. FAU - Wang, Shaopeng AU - Wang S AD - School of Marine Sciences, Guangxi University, Nanning 530004, PR China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China. FAU - Wang, Yinghui AU - Wang Y AD - School of Marine Sciences, Guangxi University, Nanning 530004, PR China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China. Electronic address: wyh@gxu.edu.cn. FAU - Yu, Kefu AU - Yu K AD - School of Marine Sciences, Guangxi University, Nanning 530004, PR China; Coral Reef Research Center of China, Guangxi University, Nanning 530004, PR China; Guangxi Laboratory on the Study of Coral Reefs in the South China Sea, Guangxi University, Nanning 530004, PR China. Electronic address: kefuyu@scsio.ac.cn. LA - eng PT - Journal Article DEP - 20180320 PL - Netherlands TA - Ecotoxicol Environ Saf JT - Ecotoxicology and environmental safety JID - 7805381 RN - 0 (Plastics) RN - 0 (Polycyclic Aromatic Hydrocarbons) RN - 0 (Water Pollutants, Chemical) RN - 059QF0KO0R (Water) SB - IM MH - Adsorption MH - Geologic Sediments/*chemistry MH - Plastics/*chemistry MH - Polycyclic Aromatic Hydrocarbons/analysis/*chemistry MH - Water/chemistry MH - Water Pollutants, Chemical/analysis/*chemistry MH - Water Pollution MH - Wetlands OTO - NOTNLM OT - Mangrove sediment OT - Microplastics OT - Polycyclic aromatic hydrocarbons OT - WEOM/L-WEOM EDAT- 2018/03/20 06:00 MHDA- 2018/08/09 06:00 CRDT- 2018/03/19 06:00 PHST- 2017/12/29 00:00 [received] PHST- 2018/02/28 00:00 [revised] PHST- 2018/03/06 00:00 [accepted] PHST- 2018/03/20 06:00 [pubmed] PHST- 2018/08/09 06:00 [medline] PHST- 2018/03/19 06:00 [entrez] AID - S0147-6513(18)30205-7 [pii] AID - 10.1016/j.ecoenv.2018.03.021 [doi] PST - ppublish SO - Ecotoxicol Environ Saf. 2018 Jul 30;156:176-182. doi: 10.1016/j.ecoenv.2018.03.021. Epub 2018 Mar 20.