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| Determination of Pentachlorophenol in Environmental Water by LC-MS and Ultrasonic Assisted Extraction with Ionic Liquid |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:ultrasound-assisted extraction liquid-liquid microextraction ionic liquid water pentachlorophenol（PCP） liquid chromatography coupled with mass spectrometry（LC-MS） |
| Author | Institution |
| MIN Jian-qing,CHEN Mei-lan,CHEN Xiao-hong,JIN Mi-cong* |
1.浙江树人大学生物与环境工程学院;2.宁波市疾病预防控制中心 浙江省微量有毒化学物健康风险评估技术研究重点实验室;3.宁波市疾病预防控制中心宁波市毒物研究与控制重点实验室 |
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| Abstract: |
| environmental water by liquid chromatography-mass spectrometry（LC-MS） coupled with ultrasonic assisted extraction with ionic liquid.An ionic liquid,1-butyl-3-methylimidazolium hexafluorophosphate（［C4mim］［PF6］）,was used as extraction solvent to extract PCP in water samples.The extraction parameters,such as sample volume,temperature,ultrasonic extraction time,inorganic salt concentration and solution pH value were investigated.The chromatographic separation was performed on a XDB C18（150 mm×2.1 mm,5 μm） column with a mobile phase of methanol-2 mmol/L ammonium acetate solution（70∶30）.Detection was carried out by LC-MS using a negative electrospray ionization interface under the selected ion monitoring（SIM） mode.The calibration curve was linear within the range of 0.005-1.0 μg?L-1 with a correlation coefficient of 0.999 2.The limit of quantitation（LOQ） was 0.005 μg?L-1.The extraction recoveries were between 91.0% and 97.0%,and the intra-day RSDs were between 1.1% and 5.4%,and the inter-day RSDs were between 3.8% and 8.3%.The developed method was simple,accurate and specific,and could be used for the determination of trace PCP in environmental water. |
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