| 聚氯乙烯(PVC)管材中氯乙烯单体的溶解沉淀-顶空-气相色谱法测定 |
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| 引用本文： | 余胜兵,朱炳辉,许瑛华,戴光伟,钟秀华.聚氯乙烯(PVC)管材中氯乙烯单体的溶解沉淀-顶空-气相色谱法测定[J].分析测试学报,2010,29(10). |
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| 作者姓名： | 余胜兵 朱炳辉 许瑛华 戴光伟 钟秀华 |
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| 作者单位： | 广东省疾病预防控制中心,广东,广州,510300 |
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| 基金项目： | 广东省医学科研基金资助项目 |
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| 摘 要： | 建立了聚氯乙烯(PVC)管材中氯乙烯单体的溶解沉淀-顶空-气相色谱法。选择HP-Wax毛细管柱为分离色谱柱,4mL含水量为37.5%(体积分数)的N,N-二甲基乙酰胺(DMA)溶液溶解PVC管材,在75℃平衡35min的条件下顶空进样进行气相色谱分析。结果显示,氯乙烯在0.025～2.50mg/L范围内线性关系良好,相关系数r=0.9993。以3倍信噪比计算,该方法的检出限为4.75μg/L。对样品加标测定6次,加标回收率为90%～96%,相对标准偏差(RSD)小于6.0%。该方法比常规的顶空进样方法的灵敏度提高了近9倍,具有操作简单、快速、灵敏度高、准确度和精密度好等优点,适合于PVC管材中氯乙烯单体的检测。
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| 关 键 词： | 溶解沉淀 顶空 毛细管色谱柱 氯乙烯 |
Determination of Vinyl Chloride Monomer in Poly(vinyl chloride)(PVC)Pipes by Dissolution Precipitation-Headspace-Capillary Gas Chromatography |
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| YU Sheng-bing,ZHU Bing-hui,XU Ying-hua,DAI Guang-wei,ZHONG Xiu-hua.Determination of Vinyl Chloride Monomer in Poly(vinyl chloride)(PVC)Pipes by Dissolution Precipitation-Headspace-Capillary Gas Chromatography[J].Journal of Instrumental Analysis,2010,29(10). |
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| Authors: | YU Sheng-bing ZHU Bing-hui XU Ying-hua DAI Guang-wei ZHONG Xiu-hua |
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| Institution: | YU Sheng-bing,ZHU Bing-hui,XU Ying-hua,DAI Guang-wei,ZHONG Xiu-hua(Center for Disease Prevention and Control of Guangdong Province,Guangzhou 510300,China) |
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| Abstract: | A new method was established for the determination of vinyl chloride monomer in poly(vinyl chloride)(PVC)pipes by dissolution precipitation-headspace-capillary gas chromatography with flame ionization detector(FID).The principle of this method was based on that a proper percent of water added to N,N-dimethylacetamide(DMA)solution could decrease the solubility of vinyl chloride in DMA solution and thus increase the concentration of vinyl chloride in gas phase.Smashed pipes were dissolved by DMA and water was... |
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| Keywords: | dissolution precipitation headspace capillary gas chromatography vinyl chloride |
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