Determination of Formic Acid in Cyclohexane by Gas Chromatography
摘 要
提出了测定环己烷中甲酸含量的气相色谱法,采用热导池检测器,癸二酸/GDX103不锈钢填充柱(2 m×2 mm),优化了色谱条件,测得检出限(3S/N)为1.0 mg·kg-1,甲酸的质量浓度在10.0~100.0 g·L-1范围呈线性关系,测得加标回收率在96.0%~104.3%之间,对20.0,100.0 g·L-1甲酸标准测定7次,相对标准偏差分别为3.2%和1.9%,符合环己烷工艺中甲酸含量测定的技术要求.
Abstract
A method for the determination of formic acid in cyclohexane by GC was described.TCD and decanedioic acid/GDX103 chromatographic column (2 m×2 mm) with TCD detector were used in this work.Under the optimized conditions,limit of detection (3S/N) of the proposed method was found to be 1.0 mg·kg-1.Linearity range was found in the range of 10.0-100.0 g·L-1.Recoveries obtained by standard additions were in the range of 96.0%-104.3%.Precision test was carried out at the concentration levels of 20.0,100.0 g·L-1,and RSDs (n=7) obtained were 3.2% and 1.9% respectively.Accuracy and precision of the method met with the technical specification for the determination of formic acid in cyclohexane production.
中图分类号 O657.7
所属栏目 工作简报
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收稿日期 2007/5/11
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备注李华文(1974-),女,辽宁人,工程师,从事石油化工产品的分析检测工作.
引用该论文: LI Hua-wen,ZHANG Jun-ming,LIU Dian-li,YANG Dan. Determination of Formic Acid in Cyclohexane by Gas Chromatography[J]. Physical Testing and Chemical Analysis part B:Chemical Analysis, 2008, 44(10): 960~961
李华文,张军明,刘殿丽,杨丹. 气相色谱法测定环己烷中甲酸[J]. 理化检验-化学分册, 2008, 44(10): 960~961
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参考文献
【1】熊合中,李昌,陈帆,等.工业冰乙酸中甲酸含量的测定-气相色谱法[J].化工标准化与质量监督,1999,5:24-26.
【2】GB/T 1628.5-2000工业用冰乙酸含量中甲酸含量的测定-气相色谱法[S].
【2】GB/T 1628.5-2000工业用冰乙酸含量中甲酸含量的测定-气相色谱法[S].
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