高效液相色谱法测定汽车内醛酮类物质
2019-10-21石非霍任锋
石非 霍任锋
摘 要:文章研究了2,4-二硝基苯肼固相吸附/高效液相色谱法同时测定汽车中13种挥发性醛酮类物质的方法。研究采用了固相吸附采样法和乙腈溶液洗脱的前处理,优化了试验方法,提高了检测的灵敏度喝准确度。13种醛酮类物质在一定范围内工作曲线线性良好,13种醛酮衍生物标液的稳定性、精密度良好,实际样品测量结果准确。关键词:DNPH;高效液相色谱法;汽车;醛酮类物质中图分类号:U461.99 文献标识码:B 文章编号:1671-7988(2019)01-162-03
Determination of Volatile Carbonyl Compounds in Cabin of Vehicles byHigh Performance Liquid Chromatography
Shi Fei, Huo Renfeng
( Beijing Products Quality Supervision and Inspection Institute, Beijing 101300 )
Abstract: The simultaneous determination of 13 kinds of volatile Carbonyl Compounds in cabin of vehicles by 2, 4-dinitro -phenylhydrazine solid phase adsorption and High Performance Liquid Chromatography was studied . In this research, solid phase adsorption sampling method and acetonitrile solution elution pretreatment were used to optimize the test method and improve the detection sensitivity and accuracy.13 kinds of Carbonyl Compounds have good linear working curves, 13 kinds of Carbonyl Compounds derivative standard substance have good stability and precision, and the actual sample measurement results are accurate.Keywords: DNPH; High Performance Liquid Chromatography; Cabin of Vehicles; Carbonyl CompoundsCLC NO.: U461.99 Document Code: B Article ID: 1671-7988(2019)01-162-03
1 前言
![]()
醛酮类挥发性有机物是目前人们越来越重视的空气污染物。挥发性醛酮类物质具有慢性毒性,大量吸入将对人体产生重大危害。汽车行业制造过程中会使用较多的塑料制品和胶类物质,因而汽车中多含有醛酮类化合物,会自动释放至空气中,浓度随着时间积累而增加。人在乘车过程中长时间吸入会对呼吸道和神经系统等产生损害,因此汽车中醛酮类化合物受到了人们的广泛关注。目前,国内外已将醛酮类化合物列为重点控制的有毒有害污染物。国家环保部颁布的标准GB27630-2011《乘用车内空气质量评价指南》[2]中规定甲醛、乙醛和丙烯醛的含量分别不得超过0.10mg/m3、0.05 mg/m3和0.05mg/m3。对于空气中醛酮化合物的分析有分光光度法、气相色谱-质谱联用法和高效液相色谱法,HJ/T400- 2007《车内挥发性有机物和醛酮类物质采样测定方法》[1]是采用了液相色谱法测定空气中醛酮类化合物。该方法由于普通C18柱无法有效分离丙烯醛和丙酮的色谱峰,因此在实际应用中丙酮会干扰丙烯醛的检测[3]。……
