Investigating the role of colloids on the distribution of bisphenol analogues in surface water from an ecological demonstration area, China.

Authors:
Wei Si
Wei Si
Harbin Veterinary Research Institute
China
Yuanfei Cai
Yuanfei Cai
Key Laboratory of Integrated Regulation and Resources Development
Jianchao Liu
Jianchao Liu
College of Environment
China
Jie Shen
Jie Shen
Fudan University
China
Qing Chen
Qing Chen
Southern Medical University
China
Chen Chen
Chen Chen
Michigan State University
East Lansing | United States
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Key Laboratory of Water Cycle & Related Land Surface Processes

Sci Total Environ 2019 Jul 10;673:699-707. Epub 2019 Apr 10.

Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China.

Owing to the widespread use of bisphenol analogues (BPs) as substitutes for bisphenol A (BPA), the presence of BPs in multiple environments is of increasing concern. However, there is a limited understanding of the effects of colloids on the distribution and risk assessment of BPs traditionally dissolved in surface water. In this study, seven BPs were investigated in both the truly dissolved (<5 kDa) and colloidal (5 kDa to 1 μm) phases with water, with mean concentrations in the range of 71.6-671 ng/L and 5.84-76.6 ng/L, respectively. BPA and bisphenol S (BPS) were the dominant BPs in both phases, but a clear positive correlation was found between the adsorption contribution proportions of colloids to BPs and their hydrophobicity (octanol-water partition coefficient). The colloids contributed 50.4% of bisphenol AF, 33.4% of tetrabromobisphenol A, 25.2% of bisphenol F, 10.9% of BPA and 9.50% of BPS in the traditionally dissolved phase (<1 μm), which suggests that colloids play an important role in regulating the transformation and transportation of BPs in aquatic environments. Based on BP concentrations in the truly dissolved phase, only moderate risk levels for BPs towards algae, daphnia and fish were posed, and no oestrogenic risk existed in the study area.

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Source
https://linkinghub.elsevier.com/retrieve/pii/S00489697193166
Publisher Site
http://dx.doi.org/10.1016/j.scitotenv.2019.04.142DOI Listing
July 2019
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