School of Chemistry and Biochemistry, University of Western Australia, Crawley, Australia.
Environ Sci Process Impacts. 2015 Feb;17(2):448-57. doi: 10.1039/c4em00484a.
A simplified and sensitive liquid chromatography mass spectrometry (LC-MS) method without requiring sample pre-concentration was successfully developed for detecting the occurrence of ultra-low (ng L(-1)) concentrations of benzotriazole (BTri), and its derivative 5-methyl benzotriazole (5-MeBT) in various Western Australian environmental water samples. The method detection limit was 2 ng L(-1), providing similar detection limits to other more process intensive methods where pre-concentration using solid phase extraction (SPE) was employed. The method was used to assess the occurrence of BTri and 5-MeBT in wastewater and surface water samples. Over a period of 12 months, BTri and 5-MeBT concentrations in secondary treated wastewater were measured, with the highest BTri and 5-MeBT concentrations observed during winter months at 78 ng L(-1) and 21 ng L(-1), respectively. The method was also used to assess the removal efficiency of BTri and 5-MeBT through an advanced water recycling plant (AWRP). While BTri was more persistent than 5-MeBT, both compounds were removed from the AWRP to <10 ng L(-1) (BTri) and <2 ng L(-1) (5-MeBT), with reverse osmosis (RO) providing the most effective treatment process for their removal.
建立了一种无需样品预浓缩的简化、灵敏的液相色谱-质谱（LC-MS）方法，成功用于检测西澳大利亚各种环境水样中极低（ng/L）浓度的苯并三唑（BTri）及其衍生物 5-甲基苯并三唑（5-MeBT）的存在。方法检测限为 2ng/L，与其他更复杂的方法（采用固相萃取（SPE）进行预浓缩）的检测限相似。该方法用于评估废水和地表水样品中 BTri 和 5-MeBT 的存在情况。在 12 个月的时间里，对二级处理废水中的 BTri 和 5-MeBT 浓度进行了测量，冬季最高浓度分别为 78ng/L 和 21ng/L。该方法还用于评估高级水回收厂（AWRP）中 BTri 和 5-MeBT 的去除效率。虽然 BTri 比 5-MeBT 更持久，但两种化合物都通过反渗透（RO）从 AWRP 中去除至<10ng/L（BTri）和<2ng/L（5-MeBT），RO 是去除这两种化合物最有效的处理工艺。
