微塑料中的有机物质的浸出及其在消毒副产品形成中的作用
Naseeba Parveen1, Anuja Joseph1, Sudha Goel2
1School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal 721302, India.
The Science of the total environment
|October 8, 2023
概括
微塑料 (MPs) 在化水中出有机物质,形成消毒副产品 (DBPs),如三甲和酸. 不同的塑料类型和接触时间影响DBP的形成,突出MP作为新型DBP前体.
科学领域:
- 环境化学环境化学
- 水的质量 水的质量
- 聚合物科学 聚合物科学
背景情况:
- 自然有机物 (NOM) 是消毒副产品 (DBPs) 的主要前体.
- 越来越多的环境污染物,包括微塑料 (MP),引发了对新型DBP前体的担忧.
- 了解MP漏的有机物在DBP形成中的作用对于水安全至关重要.
研究的目的:
- 研究微塑料 (MPs) 出有机物质 (OM) 的潜力.
- 评估从浸的OM中随后形成的消毒副产品 (DBPs).
- 为了比较不同MP类型和不同条件下的DBP形成.
主要方法:
- 实验设置包括含有MP的化水 (Cl2-MP) 和含有MP的非化水 (非Cl2-MP).
- 测试了四种MP类型:聚乙烯 (PE),聚乙烯二甲 (PET),聚烯 (PP) 和聚乙烯 (PVC).
- 测量了紫外线吸收,溶解有机碳 (DOC),三甲 (THM) 和酸 (HAA).
主要成果:
- 化MPs出的DOC度明显高于非化MPs,芳香度较低.
- 在化水中,从MP中出的OM在化水中形成THM和HAA;PVC显示THM形成最高.
- 根据MP类型和接触时间,DBP的形成有所不同,THM度普遍下降,HAA度随着时间的推移而增加.
结论:
- 微塑料作为有机物质的来源,可以在化水中形成消毒副产品.
- 微塑料的类型和接触时间显著影响液化有机物和随后的DBP的数量和特征.
- 微塑料是水生环境中消毒副产品的新型和相关的前体.
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