分摊
环境科学
环境化学
空间分布
紫外线
中国
季节性
相(物质)
化学
环境工程
地理
生态学
有机化学
遥感
材料科学
生物
考古
法学
光电子学
政治学
作者
Zifei Qin,Haichao Wang,Renjie Bian,William A. Stubbings,Fangbai Li,Fengchang Wu,Shaorui Wang
出处
期刊:ACS ES&T water
[American Chemical Society]
日期:2024-07-26
卷期号:4 (8): 3587-3599
被引量:1
标识
DOI:10.1021/acsestwater.4c00537
摘要
The occurrences of antioxidants (AOs) in aquatic environments, including ultraviolet absorbents (UVAs), synthetic phenolic antioxidants (SPAs), and amino antioxidants (AOAs), are receiving concerns due to potential risks to ecosystems and humans. In this study, we systematically elucidated the spatial and seasonal variation, sources, and risk assessments of 4 SPAs, 14 AOAs, and 12 UVAs in surface water in the Pearl River Delta (PRD). The total concentration of AOs (Σ30AOs) displayed significant seasonal trends, with a higher concentration observed in dry seasons. The median concentrations of Σ30AOs were 95 and 42 ng/L for the dry and wet seasons, respectively. BHT-COOH and BHT-OH, DPA and DODPA, and UV-329 were the most abundant SPAs, AOAs, and UVAs, respectively. Strong significant and positive correlations were observed between the population of local residents and concentrations of SPAs and AOAs (p < 0.001), indicating that the occurrences of SPAs and AOAs were influenced by anthropogenic activities. Source apportionment first revealed that AO contamination in the PRD mainly encompassed rubber manufacturing and plastic, resin, and polymer manufacturing, accounting for 61 and 25% of AOs in the PRD. The ecological risks were identified to be high for DODPA while the human health risks were found to have no adverse effects.
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