Species dependent accumulation and transformation of 8:2 polyfluoroalkyl phosphate esters in sediment by three benthic organisms

被引：19
作者：
Chen, Meng [1 ]
Wang, Qiang [1 ]
Zhu, Yumin [1 ]
Zhu, Lingyan [1 ,2 ]
Xiao, Bowen [1 ]
Liu, Menglin [1 ]
Yang, Liping [1 ]
机构：
[1] Nankai Univ, Coll Environm Sci & Engn, Tianjin Key Lab Environm Remediat & Pollut Contro, Key Lab Pollut Proc & Environm Criteria,Minist Ed, Tianjin 300071, Peoples R China
[2] Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shanxi, Peoples R China
来源：
ENVIRONMENT INTERNATIONAL | 2019年 / 133卷
关键词：
8:2 diPAP; Bioaccumulation; Biotransformation; Sediment; Benthic organisms; POLYBROMINATED DIPHENYL ETHERS; CARP CYPRINUS-CARPIO; PERFLUOROOCTANE SULFONATE; LUMBRICULUS-VARIEGATUS; FLUOROTELOMER ALCOHOL; ALKYL SUBSTANCES; BIOACCUMULATION; PERFLUOROALKYL; ACIDS; BIOTRANSFORMATION;
D O I：
10.1016/j.envint.2019.105171
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Sediment is a major sink for 8:2 polyfluoroalkyl phosphate diester (8:2 diPAP) in the environment. In the present study, three representative benthic organisms, including carp (Cyrinus carpio), loach (Misgurnus anguillicaudatus) and worm (Limnodrilus hoffmeisteri), were exposed to 8:2 diPAP spiked sediment at 300 ng g(-1). 8:2 diPAP in the sediment was bioavailable to carp, loach and worm even though the biota-sediment accumulation factors (BSAFs) (0.137, 0.0273, 0.413 g g(-1), respectively) were relatively low due to its large molecular weight and high log K-OW value. The worm displayed the greatest enrichment ability among the three species, implying the utility of using worm as a bio-indicator of 8:2 diPAP pollution in sediment. The biotransformation products (e.g. 8:2 FTUCA and 7:3 FTCA) were detected in all the three species, suggesting that they had the ability to transform 8:2 diPAP. Loach displayed the strongest metabolism capacity while worm displayed the weakest. Transformation of 8:2 diPAP also took place in the sediment by microorganisms. Notably, the concentration ratio of 7:3 FTCA and 8:2 FTUCA in the sediment was much lower than that in benthic organisms, suggesting that the aquatic benthic organisms and microorganisms had different transformation activities and mechanisms.
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