Curtin Water Quality Research Centre (CWQRC), Chemistry, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia, Australia.
ChemCentre, Perth, Western Australia, Australia.
Indoor Air. 2019 May;29(3):499-509. doi: 10.1111/ina.12551. Epub 2019 Mar 30.
A simple method for the collection and analysis of the four brominated and chlorinated trihalomethanes (THMs) in air samples is described. Ambient air samples were collected in pre-prepared glass vials, with THM analysis performed using solid-phase microextraction gas chromatography-mass spectrometry, where the need for chemical reagents is minimized. Analytical parameters, including oven temperature program, solvent volume, incubation time, vial agitation, extraction time and temperature, as well as desorption time and temperature, were evaluated to ensure optimal method performance. The developed method allows for point-in-time quantification (compared to an average concentration measured over extended periods of time), with detection limits between 0.7 to 2.6 µg/m . Excellent linearity (r > 0.99), repeatability (3% to 11% RSD), and reproducibility (3% to 16% RSD) were demonstrated over a concentration range from 2 to 5000 µg/m . The method was validated for the analysis of THMs in indoor swimming pool air and was used to investigate the occurrence of THMs in the air above 15 indoor swimming pools. This is the first study to report the occurrence of THMs in swimming pool air in Australia, and concentrations higher than those previously reported in other countries were measured.
一种简单的方法，用于收集和分析空气中的四种溴化和氯化三卤甲烷（THMs）。环境空气样品在预先准备好的玻璃小瓶中采集，使用固相微萃取气相色谱-质谱法进行 THM 分析，最大限度地减少了对化学试剂的需求。评估了分析参数，包括烘箱温度程序、溶剂体积、孵育时间、小瓶搅拌、提取时间和温度以及解吸时间和温度，以确保方法性能最佳。所开发的方法允许进行实时定量（与长时间内测量的平均浓度相比），检测限在 0.7 到 2.6 µg/m 之间。在 2 到 5000 µg/m 的浓度范围内，表现出极好的线性（r > 0.99）、重复性（3%到 11% RSD）和再现性（3%到 16% RSD）。该方法已通过对室内游泳池空气中 THMs 的分析进行了验证，并用于研究 15 个以上室内游泳池空气中 THMs 的发生情况。这是首次在澳大利亚报告游泳池空气中存在 THMs 的研究，并且测量到的浓度高于以前在其他国家报告的浓度。
