摘要
建立了顶空/气相色谱测定橡皮擦中挥发性苯及苯系物的分析方法,通过优化样品前处理过程和色谱条件,将样品适当破碎后,顶空/气相色谱检测。结果表明,该方法节省溶剂、环境友好、快速、简便,线性关系、灵敏度和稳定性均良好。在0.05~5.00μg/g线性范围内,其线性系数均大于0.999,检出限为0.02~0.04μg/g,平均回收率为91.9%~98.9%,相对标准偏差均小于5%。市场监测分析显示,不同品牌不同品种橡皮擦产品中挥发性苯及苯系物含量差别迥异,市场总体较为安全,但加大对该类产品在该方面安全因素的监管势在必行。
A headspace gas chromatographic（HS/GC） method was established for the determination of volatile benzene and benzene homologues in eraser.The sample pretreatment and chromatographic conditions were optimized.After properly crushed,the sample was detected by HS/GC,and the result showed that this method had the advantages of saving solvent,environment friendliness,rapidness and simplicity.The linear ranges of 8 volatile benzene and its homologues were in the range of 0.05-5.00μg/g,with correlation coefficients more than 0.999.The detection limits were in the range of 0.02-0.04μg/g,and the average recoveries were in the range of 91.9%-98.9% with the relative standard deviations less than 5%.Market monitoring analysis showed that the contents of the volatile benzene and its homologues in different brands and different kinds of erasers were quite different.And it was still imperative to increase the safety supervision on this kind of products though the market was relatively safe.
出处
《分析测试学报》
CAS
CSCD
北大核心
2017年第7期870-875,共6页
Journal of Instrumental Analysis
基金
国家质量监督检验检疫总局科技计划项目(2015QK209)
