注射器内空气辅助萃取-小型便携式质谱法现场快速检测纺织品中的12种有害染料  

Rapid On-Site Analysis of 12 Kinds of Hazardous Colorants in Textiles Using In-Syringe Air-Assisted Extraction Coupled with a Miniature Mass Spectrometer

作　　者：华韵晨 倪章 郭项雨[2] 陈萌 白桦[2] 马潇潇[3] 李晓旭[1] 马强[2] HUA Yun-Chen;NI Zhang;GUO Xiang-Yu;CHEN Meng;BAI Hua;MA Xiao-Xiao;LI Xiao-Xu;MA Qiang(School of Mechanical and Electric Engineering,Soochow University,Suzhou 215021,China;Chinese Academy of Inspection and Quarantine,Beijing 100176,China;State Key Laboratory of Precision Measurement Technology and Instruments,Department of Precision Instrument,Tsinghua University,Beijing 100084,China)

机构地区：[1]苏州大学机电工程学院,苏州215021 [2]中国检验检疫科学研究院,北京100176 [3]清华大学精密仪器系,精密测试技术及仪器国家重点实验室,北京100084

出　　处：《分析化学》2022年第5期757-763,共7页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(No.2194129);国家市场监督管理总局科技计划项目(No.2019MK124)资助

摘　　要：采用注射器内空气辅助萃取技术,结合自主研发的小型化线形离子阱质谱仪,建立了纺织品中12种有害染料的现场快速检测方法。通过具有微小内径的金属中空针尖,可使空气以较高速率进入注射器内,扰动萃取溶剂形成湍流漩涡,从而高效萃取注射器内的纺织品样品。对注射器内空气辅助萃取的流体动力学进行模拟分析,并对萃取溶剂、萃取次数及喷雾电压等条件进行了优化。萃取完成后,萃取溶剂可在注射器针尖处形成电喷雾,采用小型便携式质谱仪进行检测。本方法对12种染料的检出限为0.15~2.50 mg/kg,定量限为0.40~6.00 mg/kg,回收率在80.1%~106.4%之间,相对标准偏差为7.5%~15.6%。本方法简便高效,可用于纺织品样品的现场快速检测。A rapid,on-site protocol was developed for analysis of 12 kinds of hazardous colorants in textiles using in-syringe air-assisted extraction coupled with a self-made miniaturized linear ion trap mass spectrometer.A custom-made metal hollow needle with a tiny internal diameter enabled the aspiration of a high-speed airflow,resulting in a turbulent vortex and a highly efficient in-syringe extraction.The computational fluid dynamics of the in-syringe air-assisted extraction process was simulated.The extraction solvent,extraction cycle,and spray voltage were optimized.After extraction of target analytes,an electrospray was induced at the needle tip of the syringe,which was subjected to the detection by a miniature mass spectrometer.The limits of detection(LODs)and quantitation(LOQs)for the 12 kinds of colorants were 0.15-2.50 mg/kg and 0.40-6.00 mg/kg,respectively.The recoveries were 80.1%-106.4%with the relative standard deviations of 7.5%-15.6%.The established method was simple and efficient,and could be applied to the rapid and on-site analysis of textile samples.

关 键 词：注射器内空气辅助萃取 小型便携式质谱 现场快速检测 纺织品 染料 

分 类 号：O657.63[理学—分析化学] TS107[理学—化学]