| SPME-GC联用测定沉积物中PCBs的影响因素 |
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| 引用本文： | 张秀雯,郎春燕,曹建平,罗兰萍.SPME-GC联用测定沉积物中PCBs的影响因素[J].当代化工,2017,46(2). |
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| 作者姓名： | 张秀雯 郎春燕 曹建平 罗兰萍 |
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| 作者单位： | 1. 成都理工大学材料与化学化工学院,四川成都610059;广东石油化工学院,广东茂名525000;2. 成都理工大学材料与化学化工学院,四川成都,610059;3. 广东石油化工学院,广东茂名,525000 |
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| 基金项目： | 广东石油化工学院自然科学研究项目;项目号:513036 |
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| 摘 要： | 建立了固相微萃取-气相色谱联用测定沉积物中多氯联苯(PCBs)的分析方法,分析了实验过程中的各种条件因素对萃取效果的影响。结果表明,对于100μm PDMS萃取纤维头,在80℃条件下搅拌速率为450 r/min时萃取50 min后于280℃进样口解析6 min萃取效果最佳。该方法快捷、操作简单,7次平行测定的RSD为4.6%~11.4%,相对回收率为84.6%~107.4%,满足分析要求,可用于沉积物中PCBs的测定。
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| 关 键 词： | 固相微萃取(SPME) 多氯联苯(PCBs) 萃取条件 |
Effect of Different Conditions on Determination of PCBs in Sediments by SPME-GC |
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| ZHANG Xiu-wen,LANG Chun-yan,CAO Jian-ping,LUO Lan-ping.Effect of Different Conditions on Determination of PCBs in Sediments by SPME-GC[J].Contemporary Chemical Industry,2017,46(2). |
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| Authors: | ZHANG Xiu-wen LANG Chun-yan CAO Jian-ping LUO Lan-ping |
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| Abstract: | A method for determination of polychlorinated biphenyls (PCBs) in sediments by solid phase micro-extraction combined with gas chromatography was developed.Effect of different conditions on extraction efficiency was discussed.The result shows that,when 100 μm polydimethylsiloxane (PDMS) is used in extraction at 80 ℃ for 50 min with stirring speed of 450 r/min,the sample extracts are desorbed for 6 min at 280 ℃ directly in the GC injector port,the extraction efficiency is best.The method is rapid and simple.The relative standard deviation (RSD) is 4.6％～11.4％ with relative recovery rate from 84.6％～107.4％.The method can meet the analysis requirement,it can be applied into determination of PCBs in sediments. |
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| Keywords: | Solid phase micro-extraction Polychlorinated biphenyls Extraction conditions |
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