Facile detection of pesticides using atmospheric pressure matrix-assisted laser desorption ionization mass spectrometry with multi-walled carbon nanotubes-based matrix  

作　　者：Sijian Chen Huanxi Zhao Lili Jiao Zhenhuan Wang Mengya Zhao Lu Tian Yang Xiu Shuying Liu 

机构地区：[1]Jilin Ginseng Academy,Changchun University of Chinese Medicine,Changchun 130117,China [2]Changchun Institute of Applied Chemistry,Chinese Academy of Science,Changchun 130022,China

出　　处：《Chinese Chemical Letters》2023年第1期569-573,共5页中国化学快报（英文版）

基　　金：financially supported by the Science and Technology Development Plan Project of Jilin Province(Nos.20210204098YY,20200201093JC)。

摘　　要：A novel atmospheric pressure matrix-assisted laser desorption ionization mass spectrometry(AP-MALDIMS)method was established for the facile detection of pesticides in ambient environment.Four kinds of multi-walled carbon nanotubes(MWCNTs)-based matrix were synthesized and utilized to enhance the ionization efficiency of pesticides.Organophosphorus,anilinopyrimidine,carbamate,triazine,triazole and benzimidazole pesticides were directly desorbed and ionized from MWCNTs-based matrix in ambient environment,showing clear background and good sensitivity.In a comparison,Fe3O4-doped MWCNTs improved the intensity of pesticide ions more than the other three matrices.Moreover,MWCNTs-based matrix exhibited better performance than organic matrix.Quantitative analysis of pesticides using APMALDI-MS was validated to be adequate linearity,repeatability and sensitivity.Overall,AP-MALDI-MS combined with MWCNTs-based matrix enables the directly qualitative and quantitative analysis of pesticides in ambient environment.

关 键 词：Atmospheric pressure MALDI PESTICIDES MWCNTs-based matrix Ambient ionization 

分 类 号：TB3[一般工业技术—材料科学与工程]