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The occurrence and spatial distribution of bisphenol A (BPA) and analogues bisphenol B (BPB), bisphenol F (BPF) and bisphenol S (BPS) were investigated in microplastic on 11 beaches in Hong Kong. At 10 sites, BPA was the only detected chemical with concentrations ranged from 82.4-989 ng g-1 microplastic. BPA, BPB and BPS co-occurred at only one site, where it is located close proximity to the outfall of a sewage treatment plant. There was no significant spatial difference of BPA concentrations in microplastic when all the sites were considered, indicating that some remote and presumably cleaner beaches have been contaminated. PE, PP and PS (represented >90% of total polymers) were the most dominated polymers, but there was no correlation between polymer types and BPA concentrations. No evidence was found that the BPA and its analogues accumulate on microplastic since the concentrations were comparable to those found in the sediment. Copyright © 2021 Elsevier Ltd. All rights reserved.

Citation

Hoi Shing Lo, Beverly Hoi Ki Po, Laam Li, Aman Yi Man Wong, Richard Yuen Chong Kong, Lei Li, William Ka Fai Tse, Chris Kong Chu Wong, Siu Gin Cheung, Keng Po Lai. Bisphenol A and its analogues in sedimentary microplastics of Hong Kong. Marine pollution bulletin. 2021 Mar;164:112090

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PMID: 33529876

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