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首页> 外文期刊>Electrophoresis: The Official Journal of the International Electrophoresis Society >Analysis of amphetamine and methamphetamine in municipal wastewater influent and effluent using weak cation‐exchange SPE and LC‐MS/MS
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Analysis of amphetamine and methamphetamine in municipal wastewater influent and effluent using weak cation‐exchange SPE and LC‐MS/MS

机译：使用弱阳离子交换SPE和LC-MS / MS的城市废水流入和流出物中的氨基胺和甲基丙酮分析

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摘要

Amphetamine and methamphetamine are emerging contaminants—those for which no regulations currently require monitoring or public reporting of their presence in our water supply. In this research, a protocol for weak cation‐exchange (WCX) SPE coupled with LC‐MS/MS was developed for determination of emerging contaminants amphetamine and methamphetamine in a complex wastewater matrix. Gradient LC parameters were adjusted to yield baseline separation of methamphetamine from other contaminants. Methamphetamine‐D5 was used as the internal standard (IS) to compensate for sample loss during SPE and for signal loss during MS (matrix effects). Recoveries were 102.1 ± 7.9% and 99.4 ± 4.0% for amphetamine and methamphetamine, respectively, using WCX sorbent. Notably, methamphetamine was determined to be present in wastewater influent at each sampling date tested. Amphetamine was present in wastewater influent on two of four sampling dates. Amphetamine concentrations ranged from undetectable to 86.4 ng/L in influent, but it was undetectable in wastewater effluent. Methamphetamine was detected in influent at concentrations ranging from 27.0–60.3 ng/L. Methamphetamine concentration was reduced but incompletely removed at this facility. Although absent in one post‐UV effluent sample, concentrations of methamphetamine ranged from 10.8–14.8 ng/L.
机译：Amphetamine和甲基苯丙胺是新兴污染物 - 那些没有法规目前不需要监测或公开报告他们在我们的供水中的存在。在该研究中，开发了一种用于与LC-MS / MS偶联的弱阳离子交换（WCX）SPE的方案，用于测定在复合废水基质中的新出现的污染物安非他明和甲基甲基甲基甲基。调整梯度LC参数以产生从其他污染物的基线分离甲基苯丙胺。使用甲基苯丙胺-D5作为内标（是）以补偿SPE期间的样品损耗和MS期间的信号损耗（基质效应）。使用WCX吸附剂，分别回收率为约102.1±7.9％和99.4±4.0％，甲基苯丙胺分别为102.1±7.9％和99.4±4.0％。值得注意的是，测定甲基苯丙胺在测试的每个采样日期的废水流入中存在。在四个采样日期中的两种采样日期中存在余量在废水中存在。安非他明浓度从流入物中不可检测到86.4 ng / l，但在废水流出物中不可检测。在27.0-60.3ng / L的浓度的流入中检测到甲基苯丙胺。在该设施下，甲基苯丙胺浓度降低但不完全除去。虽然在一个后紫外线流出物样品中不存在，但甲基苯丙胺的浓度范围为10.8-14.8ng / l。

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