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| 气相色谱-高分辨双聚焦磁质谱测定水中超痕量多氯萘 |
| Determination for Ultra trace PCNs in Water by Gas Chromatography Double focusing High resolution Mass Spectrometry |
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| DOI： |
| 中文关键词: 多氯萘 固相萃取 气相色谱-高分辨双聚焦磁质谱法 水质 |
| 英文关键词: PCNs Solid phase extract Gas chromatography double focusing high resolution magnetic mass Water quality |
| 基金项目:“高关注新型POPs监测方法与POPs监测新技术研发”基金资助项目（201209016） |
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| 中文摘要: |
| 采用固相萃取法处理水样，气相色谱-高分辨双聚焦磁质谱法测定水中超痕量多氯萘，同位素内标法定量，并对样品前处理条件和仪器条件进行优化。试验表明：方法在0.500 ng/L～500 ng/L范围内线性良好；当取样体积为1 L时，方法检出限为0.005 ng/L～0.01 ng/L；对实际水样进行2个质量浓度水平的加标回收试验，平行测定6次的RSD为2.7%～8.7%，回收率为70.2%～110%。方法适用性试验表明，水样中复杂的基质对测定无影响。 |
| 英文摘要: |
| A method for ultra trace PCNs in water was established by solid phase extraction gas chromatography double focusing high resolution mass spectrometry.The influencing factors were discussed such as solid phase extraction solvent,solid phase extraction column and electron bombardment energy.The good linearity of the method was obtained from 0.500 ng/L to 500 ng/L,detection limits of the method from 0.005 ng/L to 0.01 ng/L at 1 L sample,recoveries of matrix samples from 70.2% to 110%,RSD from 2.7% to 8.7%.This method has high selectivity,high sensitivity and high precision,which can monitor PCNs in complex matrices perfectly. |
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