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| 离子色谱-三重四级杆质谱法测定生活饮用水中痕量碘乙酸 |
| Determination of Trace Iodoacetic Acid in Drinking Water by Ion Chromatography Triple Quadrupole Mass Spectrometry |
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| DOI： |
| 中文关键词: 碘乙酸 离子色谱-三重四级杆质谱法 生活饮用水 |
| 英文关键词: Iodoacetic acid Ion chromatography triple quadrupole mass spectrometry Drinking water |
| 基金项目:江苏省卫生与健康委员会课题基金资助项目（Y2018080） |
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| 中文摘要: |
| 水样经MAX固相萃取小柱富集后，用体积分数为1%的甲酸-甲醇溶液洗脱，洗脱液经0.22 μm滤膜过滤，在离子色谱柱上分离后采用三重四级杆质谱法测定水样中的碘乙酸。该方法在0 μg/L~1 000 μg/L范围内线性良好，方法检出限为0.3 μg/L。生活饮用水样品3个质量浓度水平的加标回收率为94.0%~106%，5次测定结果的RSD为2.1%~5.3%。将该方法用于测定江苏地区生活饮用水，结果未检出，高碘地区原水的加氯模拟消毒试验测得消毒后水样中碘乙酸为1.3 μg/L。 |
| 英文摘要: |
| The water samples were enriched by MAX solid phase extraction column and eluted with 1% formic acid methanol solution. The eluted solution was filtered by 0.22 μm filter membrane. Iodoacetic acid was separated by ion chromatographic column and detected by mass spectrometry. The linearity of the method was good in the range of 0 μg/L to 1 000 μg/L. The detection limit was 0.3 μg/L. The recoveries at high, medium and low concentrations ranged from 94.0% to 106%, and the relative standard deviations were from 2.1% to 5.3%.The method was applied to the determination of iodoacetic acid in drinking water in Jiangsu Province. The results showed iodoacetic acid was not detected. The average concentration of iodoacetic acid in chlorinated raw water from high iodine area was 1.3 μg/L. |
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