文献类型：期刊文献

英文题名：Matrix selection for polymer guanidine analysis by MALDI-TOF MS

作者：Yang, Xiaohui[1,2];Wu, Ting[1,2];Liu, Bingxiang[1,2];Du, Yiping[1,2];Li, Haiying[3,4];Zhao, Shuangliang[5];Lu, Yunxiang[3,4]

机构：[1]E China Univ Sci & Technol, Shanghai Key Lab Funct Mat Chem, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Res Ctr Anal & Test, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[4]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China;[5]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：356

起止页码：1

外文期刊名：INTERNATIONAL JOURNAL OF MASS SPECTROMETRY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000328432200001)】；

基金：This work was supported by National Science Foundation of China (No: 21205041), the Fundamental Research Funds for the Central Universities and a grant from Research Center of Analysis and Test of East China University of Science and Technology, China.

语种：英文

外文关键词：Polymer guanidine; Matrix selection; Proton affinity; MALDI-TOF MS

摘要：Due to the diversity of polymer materials, there is no universal approach in matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) to characterize a particular polymeric system. Three commercially available polymer guanidine biocides, Poly(hexamethylene guanidine) chloride (PHMG), Polyhexamethylene biguanide (PHMB), Poly-[2-(2-ethoxy)-ethoxyethyl]-guanidinium-chloridel (PEEG) were chosen for the investigation of matrix selection using MALDI-TOF MS. No unique matrix was found to satisfy all three guanidines because of the extra C-O bonds in PEEG. Sinapic acid (SA), alpha-Cyano-4-hydroxycinnamic acid (CHCA) seemed to be ideal for PHMG and PHMB, but 2-(4-Hydroxybenzeneazo)benzoic acid (HABA), 2,5-dihydroxybenzoic acid (DHB) were for PEEG. Proton affinities (PA) of the matrix and analyte were combined to explain this phenomenon. Matrices with lower PA were more sensitive for the polymer guanidine with lower PA. (C) 2013 Elsevier B.V. All rights reserved.