水溶性聚合物:新出现的污染物通过一种新的GPC/MALDI-TOF方法检测,分离和定量
Eve C Tarring1, Isabelle Durance2, Michael J Harbottle3
1School of Chemistry, Cardiff University, Cardiff, United Kingdom.
Environmental pollution (Barking, Essex : 1987)
|November 8, 2023
概括
使用凝透色谱和质谱学的新方法现在可以检测和量化产品和废水中的水溶性聚合物 (WSP). 这一进步有助于研究WSPs的环境风险,如聚乙烯糖醇 (PEG).
科学领域:
- 环境化学环境化学
- 分析化学 分析化学
- 聚合物科学 聚合物科学
背景情况:
- 水溶性聚合物 (WSPs) 广泛用于工业和消费品,导致通过废水释放到环境中.
- 有限的生态毒理学数据和分析方法阻碍了对WSP环境命运和水生风险的理解.
- 聚乙烯甘醇 (PEG) 是个人护理产品中常见的WSP,对环境的影响尚不清楚.
研究的目的:
- 开发和验证一种用于复杂矩阵中检测,描述和量化WSP的新型分析方法.
- 评估该方法在个人护理产品和废水等环境样本中的有效性.
- 解决关于WSP环境行为和潜在风险的知识差距.
主要方法:
- 开发一种新型分析技术,将凝透色谱 (GPC) 进行分离,并使用矩阵辅助激光吸附/电离飞行时间质谱法 (MALDI-TOF MS) 进行量化.
- 将GPC/MALDI-TOF MS方法应用于商用个人护理产品 (剃须凝),以量化聚乙烯甘 (PEG) 含量.
- 一个尖的废水流入样本的概念验证分析,以评估PEG提取和从溶解有机物 (DOM) 中分离.
主要成果:
- 在剃须凝样本中成功分离并精确量化PEG,确定其度为1.62%的重量.
- 证明了从废水中提取和分离PEG,揭示了吸附和生物降解等挑战,影响回收 (53%的效率).
- 验证了GPC/MALDI-TOF MS方法用于个人护理产品中的WSP分析,并突出了其对环境样本的潜力.
结论:
- 开发的GPC/MALDI-TOF MS方法能够准确量化个人护理产品中的PEG等WSP.
- 废水的分析显示,由于环境因素,WSP回收存在重大挑战,需要进一步调查.
- 这种方法为未来在环境矩阵中的WSP监测提供了一个强大的工具,支持对水生生态系统的风险评估.
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