摘要
采用气相色谱-质谱联用法（GC-MSD）快速测定纺织品领域中涉及REACH法规的12种偶氮染料.纺织样品在柠檬酸盐缓冲溶液中用连二亚硫酸钠还原分解以产生可能存在的致癌芳香胺,以乙酸乙酯和叔丁基甲基醚（1∶1）混合体系为提取溶剂,机械振荡提取15 min,用GC-MSD测定.该方法测定12种偶氮染料的回收率为58.0％ ～ 104.0％,相对标准偏差小于5％（n=8）,测定低限为2.0 mg/kg.阳性样品测定结果表明,该方法准确、简便、快捷.
The contents of twelve azo dyes in textiles of REACH are determined by gas chromatography-mass selection detector.The textile sample is treated with sodium dithionite in citrate buffer solution.The aromatic amines derived from azo colorants may release in the process of reductive cleavage and is extracted with ethyl acetate and t-butyl methyl ether （1 ∶ 1） by mechanical vibration for 15 min.Determination of the amines is performed by gas chromatography-mass selection detector （GC-MSD）.The recovery of twelve azo dyes is 58.0％ ～ 104.0％ with the relative standard deviation less than 5％ （n =8） and the detection limits were 2.0 mg/kg.The results of positive samples suggested that this testing method is accurate,simple,fast,and saving the testing time and cost.
出处
《现代化工》
CAS
CSCD
北大核心
2013年第10期141-144,共4页
Modern Chemical Industry
基金
广州市质量技术监督局科研项目(2013kj23)
