气相色谱内标法测定水产品中五氯酚
GC Determination of Pentachlorophenol in Aquatic Products with Internal Standard Method
摘 要
水产品经正己烷提取及碳酸钾反萃取,再经乙酸酐衍生后用于气相色谱法测定其中五氯酚的含量。选择三溴苯酚作为内标物。五氯酚的质量浓度在0.5~50.0 μg·L-1范围内呈线性,方法的检出限(3S/N)为1.0 μg·kg-1。方法用于水产品分析,回收率在81.0%~96.4%之间,相对标准偏差(n=6)在3.7%~9.3%之间。
内标法
水产品
五氯酚
三溴苯酚
GC
Internal standard method
Aquatic products
Pentachlorophenol
Tribromophenol
Abstract
A method of GC with internal standard method for the determination of pentachlorophenol (PCP) in aquatic products was proposed. The sample of aquatic product was extracted with n-hexane, and the extract obtained was back extracted with K2CO3 solution. The pentachlorophenol in the K2CO3 solution was then derivatized with acetic anhydride, and the derivatized product was determined by GC. The tribromophenol was selected as internal standard. Linear relationship of pentachlorophenol was kept in the range of 0.5-50.0 μg·L-1, with detection limit (3S/N) of 1.0 μg·kg-1. The proposed method was applied to the analysis of aquatic products, giving values of recovery and RSD′s (n=6) in the ranges of 81.0%-96.4% and 3.7%-9.3% respectively.
中图分类号 O652.63
所属栏目
基金项目 徐州市科技基金项目(xj09117)
收稿日期 2010/11/4
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备注端礼钦(1981-),男,江苏溧水人,硕士,主要从事农产品质量安全监测工作。
引用该论文: DUAN Li-qin,WANG Jing,LIU Xiao-de,GU Wen-long,ZHANG Ya-nan. GC Determination of Pentachlorophenol in Aquatic Products with Internal Standard Method[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2011, 47(11): 1307～1309
端礼钦,王静,刘孝德,顾文龙,张亚南. 气相色谱内标法测定水产品中五氯酚[J]. 理化检验－化学分册, 2011, 47(11): 1307～1309
被引情况:
【1】陈祥国,姜兆林,王淑真,吕纪忠,张银华, "气相色谱法测定鱼塘水中2,4-二氯-6-硝基苯酚和五氯酚含量",理化检验－化学分册 48, 587-589(2012)
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【2】GROUP I W. IARC monographs on the evaluation of carcinogenic risks to humans, Vol.53: Occupational exposures in insecticide application, and some pesticides［R］. Lyon: IARC Press, 1991．
【3】王学东,熊珺,李爱民,等.环境中五氯酚残留检测方法的优化研究［J］.华中师范大学学报:自然科学版, 2006,40(4):540-543．
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【6】常浩.五氯酚的内分泌干扰作用研究进展［J］.环境与健康杂志, 2002,19(3):279-281．
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【8】孙磊,蒋欣,周建民,等.红壤中痕量五氯酚的气相色谱法测定［J］.分析化学, 2003,31(6):716-719．
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