How safe is drinking water?

饮用水是一种复杂的混合物，含有成千上万种自然产生的和人为产生的化学物质。已经确定了一大组水污染物，并对有害污染物进行了管制，但水中许多目前尚未查明的化学物质可能对环境和人类健康构成威胁。识别和调查水中这些新出现的污染物是我们nserc资助的研究项目的目标。为此，我们使用了强大的分析技术，结合了超高效液相色谱（UPLC）、电喷雾电离（ESI）、高场不对称波形离子迁移谱（FAIMS）和四极杆飞行时间质谱（QTOF-MS）技术。这些技术能够以快速方便的方式分离、检测和识别水中存在的化学污染物，即使是十亿分之一的浓度。利用这些独特的分析能力，我们将调查安大略省饮用水中最近发现的一组羟基羧酸以及n-亚硝胺和其他含氮污染物。我们还将评估瓶装饮用水的优先污染物，如邻苯二甲酸二酯（增塑剂）、双酚A及其降解和氯化产物。我们的研究将提供有关所调查污染物的形成、发生、命运和环境影响的全面信息，并提高饮用水的质量和安全。

Drinking water is a complex mixture of many thousands of naturally occurring and anthropogenic chemicals. A large group of water contaminants have been identified and hazardous pollutants are regulated, but many currently unidentified chemicals in water could pose a threat to the environment and human health. The identification and investigation of these emerging contaminants in water is the objective of our NSERC-funded research program. For this purpose, we use powerful analytical techniques based on combining the technologies of Ultra High Performance Liquid Chromatography (UPLC), Electrospray Ionization (ESI), High Field Asymmetric Waveform Ion Mobility Spectrometry (FAIMS), and Quadrupole-time-of-flight-Mass Spectrometry (QTOF-MS). These techniques are capable of separating, detecting, and identifying chemical pollutants present in water even at sub-parts-per-billion concentrations in a quick and convenient fashion. Using these unique analytical capabilities, we will investigate a group of recently discovered hydroxycarboxylic acids as well as N-nitrosamines and other nitrogen-containing emerging pollutants in drinking water in Ontario. We will also evaluate bottled drinking water with respect to priority pollutants such as phthalic acid diesters (plasticizers), bisphenol A, and their degradation and chlorination products. Our research will provide comprehensive information on formation, occurrence, fate, and environmental impact of investigated pollutants and improve the quality and safety of drinking water.