2,4-二氨基甲苯及其同分异构体含量的快速测定  

Rapid determination of 2,4-diaminotoluene and its isomers

作　　者：王成云[1] 樊秀荣[1] 黄明珠[1] 阮营花[1] 沈雅蕾[1] 谢堂堂[1] 

机构地区：[1]深圳出入境检验检疫局工业品检测技术中心,深圳518067

出　　处：《深圳大学学报（理工版）》2014年第3期252-257,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家质检总局科技计划资助项目(2011IK119)~~

摘　　要：建立一种超高效液相色谱方法,可对2,4-二氨基甲苯及其同分异构体进行快速分离鉴定,排除了非禁用的同分异构体对禁用初级芳香胺2,4-二氨基甲苯测定的干扰.该方法的加标回收率为63.67%～78.90%,精密度实验相对标准偏差值均小于5%.在信噪比（S/N）=3的条件下,2,3-二氨基甲苯、2,4-二氨基甲苯、2,6-二氨基甲苯和3,4-二氨基甲苯的检出限分别为1.0、0.5、0.5和1.0μg/mL.该方法简便快速,分析耗时不到5 min,定性可靠、定量准确,可有效解决禁用偶氮染料检测中2,4-二氨基甲苯的假阳性问题.In order to avoid the interference of the non-banned isomers on the determination of 2,4-diaminotoluene,an effective ultra-high performance liquid chromatography（UPLC） method was established.The spiked recoveries ranged from 63.67% to 78.90% while the relative standard deviation（RSD） of precision experiments all registered less than 5%.Under the condition of signal to noise S / N = 3,the detection limit was 1.0,0.5,0.5 and 1.0 g / mL for 2,3-diaminotoluene,2,4-diaminotoluene,2,6-diaminotoluene and 3,4-diaminotoluene,respectively.Tests show that the proposed method is simple and rapid,only needing less than 5 minutes for the analysis procedure.This method is therefore reliable and accurate in quantity,and it also solves effectively the false positive problem in the analysis of 2,4-diaminotoluene.

关 键 词：分析化学 超高效液相色谱法 2 4-二氨基甲苯 禁用偶氮染料 同分异构体 快速测定 纺织品 假阳性 干扰 

分 类 号：O657.72[理学—分析化学]