【摘要】 建立了气质联用法测定纺织品中N,N-二甲基甲酰胺(DMFo)、N,N-二甲基乙酰胺(DMAc)和N-甲基吡咯烷酮(NMP)的方法。即采用丙酮超声提取,提取液浓缩净化后,再用气相色谱-质谱联用仪测定,外标法定量。以纺织品为基质进行3个添加水平和6次平行试验,结果表明:添加质量浓度为0.5~20.0 mg/kg时,样品中DMFo、DMAc和NMP的平均回收率在85.2%~102.1%,相对标准偏差(RSD,n=6)为2.5%~8.6%,方法检出限为0.4 mg/kg。本方法前处理简单、定性定量分析准确、重现性较好,可用于纺织品中有机溶剂残留量的日常检测。更多还原

【Abstract】 The method for determination of N,N-dimethyl formamide( DMFo),N,N-dimethylacetamide( DMAc)and N-methyl pyrrolidone( NMP) in textiles by gas chromatography /mass spectrometry( GC-MS) is established.Samples are extracted with acetone under ultrasonic,the extract is concentrated and purified,then analyzed by GCMS and quantified by external standard method. The average recoveries of DMFo,DMAc and NMP( 0. 5 ~ 20. 0 mg/kg) in textiles at three levels with six times parallel test are ranged from 85. 2% to 102. 1% with 2. 5% to 8. 6% of relative standard deviations( n =6). The limit of detection of this method is 0. 4 mg/kg. The results show that the method is simple,accurate,good reproducibility,and can be suitable for routine analysis of residual organic solvents in textiles.更多还原