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Automated bundled hollow fiber array-liquid-phase microextraction with liquid chromatography tandem mass spectrometric analysis of perfluorinated compounds in aqueous media
Analytica Chimica Acta ( IF 6.2 ) Pub Date : 2018-08-01 , DOI: 10.1016/j.aca.2018.03.003
Shalene Xue Lin Goh , Hian Kee Lee

An automated bundled hollow fiber array (BHF)-liquid-phase microextraction (LPME) methodology in combination with ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) has been developed for the determination of perfluorinated compounds (PFCs) in environmental aqueous matrices. Eight PFCs were considered, including perfluoroheptanoic acid, perfluorooctanoic acid, perfluorononanoic acid, perfluorodecanoic acid, perfluoroundecanoic acid, perfluorododecanoic acid, perfluorotridecanoic acid, perfluorotetradecanoic acid. Experimental parameters influencing extraction efficiency, such as number of hollow fibers in the BHF extraction device, type of extraction and desorption solvent, extraction conditions (stirring rate, temperature and duration), elution conditions and the salting out effect were examined. Under the most favourable conditions, enrichment factors of between 9 and 40 were achieved for the target compounds when extracting from 10 mL of sample. Good intra and inter-day precision were obtained with relative standard deviations of less than 12%. The linearity range investigated was between 5 and 10,000 ng L-1, with coefficients of determination (r2) ≥ 0.991. The developed method was applied for the UHPLC-MS/MS determination of environmental PFCs in industrial water discharge samples. The automation of BHF-LPME together with UHPLC-MS/MS rendered the method efficient, rapid and sensitive to determine PFCs, with the possibility of on-site real-time monitoring of contaminants in environmental waters.

中文翻译:

自动成束中空纤维阵列-液相微萃取-液相色谱串联质谱分析水性介质中的全氟化合物

已开发出一种结合超高效液相色谱-串联质谱 (UHPLC-MS/MS) 的自动成束中空纤维阵列 (BHF)-液相微萃取 (LPME) 方法来测定全氟化合物 (PFC) ) 在环境水性基质中。考虑了八种 PFC,包括全氟庚酸、全氟辛酸、全氟壬酸、全氟癸酸、全氟十一烷酸、全氟十二烷酸、全氟十三烷酸、全氟十四烷酸。检查了影响提取效率的实验参数,例如 BHF 提取装置中的中空纤维数量、提取和解吸溶剂的类型、提取条件(搅拌速率、温度和持续时间)、洗脱条件和盐析效果。在最有利的条件下,从 10 mL 样品中提取的目标化合物的富集因子在 9 到 40 之间。获得了良好的日内和日间精密度,相对标准偏差小于 12%。研究的线性范围在 5 到 10,000 ng L-1 之间,决定系数 (r2) ≥ 0.991。所开发的方法用于 UHPLC-MS/MS 测定工业废水排放样品中的环境 PFC。BHF-LPME 的自动化与 UHPLC-MS/MS 相结合,使该方法能够高效、快速和灵敏地测定 PFC,并有可能对环境水体中的污染物进行现场实时监测。获得了良好的日内和日间精密度,相对标准偏差小于 12%。研究的线性范围在 5 到 10,000 ng L-1 之间,决定系数 (r2) ≥ 0.991。所开发的方法用于 UHPLC-MS/MS 测定工业废水排放样品中的环境 PFC。BHF-LPME 的自动化与 UHPLC-MS/MS 相结合,使该方法能够高效、快速和灵敏地测定 PFC,并有可能对环境水体中的污染物进行现场实时监测。获得了良好的日内和日间精密度,相对标准偏差小于 12%。研究的线性范围在 5 到 10,000 ng L-1 之间,决定系数 (r2) ≥ 0.991。所开发的方法用于 UHPLC-MS/MS 测定工业废水排放样品中的环境 PFC。BHF-LPME 的自动化与 UHPLC-MS/MS 相结合,使该方法能够高效、快速和灵敏地测定 PFC,并有可能对环境水体中的污染物进行现场实时监测。所开发的方法用于 UHPLC-MS/MS 测定工业废水排放样品中的环境 PFC。BHF-LPME 的自动化与 UHPLC-MS/MS 相结合,使该方法能够高效、快速和灵敏地测定 PFC,并有可能对环境水体中的污染物进行现场实时监测。所开发的方法用于 UHPLC-MS/MS 测定工业废水排放样品中的环境 PFC。BHF-LPME 的自动化与 UHPLC-MS/MS 相结合,使该方法能够高效、快速和灵敏地测定 PFC,并有可能对环境水体中的污染物进行现场实时监测。
更新日期:2018-08-01
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