Determination of selected quaternary ammonium compounds by liquid chromatography with mass spectrometry. Part I. Application to surface, waste and indirect discharge water samples in Austria
- 作者：Elena Martí ; nez-Carballo ; Andrea Sitka ; Carmen Gonzá ; lez-Barreiro ; Norbert Kreuzinger ; Maria Fü ; rhacker ; Sigrid Scharf ; Oliver Gans
- 关键词：Quaternary ammonium compounds ; Water samples ; Liquid chromatography/tandem mass spectrometry
- 刊名：Environmental Pollution
- 出版年：2007
- 期刊代码：28_02697491
- 类别：env
- 出版时间：January 2007
- 卷：145
- 期：2
- 页码：489-496
- 文件大小：311 K
摘要
A method for simultaneous quantitative determination of alkyl benzyl, dialkyl and trialkyl quaternary ammonium compounds (QACs) has been developed, validated and subsequently applied to real water samples in Austria. The method employs liquid-liquid extraction (LLE) followed by liquid chromatography/tandem mass spectrometry (LC-MS/MS), using electrospray ionization (ESI) in positive mode. The overall method quantification limits range from 4 to 19 ng/L for the enrichment of 500 mL water samples and analyte recoveries are between 80 and 99%. The method was applied to 62 of the respective water samples without filtration to avoid the loss of the analytes due to the high adsorption capacity of these compounds. Maxima in the mg/L range, especially in the wastewater of hospitals and laundries, could be detected for the selected target compounds.