High Production of Small Organic Dicarboxylate Dianions by DESI and ESI

被引：6

作者：

Dong, Yonghui ^{[1
]}

Guella, Graziano ^{[2
]}

Mattivi, Fulvio ^{[3
]}

Franceschi, Pietro ^{[1
]}

机构：

[1] Fdm Edmund Mach, Res & Innovat Ctr, San Michele All Adige, TN, Italy

[2] Univ Trento, Dept Phys, Bioorgan Chem Lab, Povo, TN, Italy

[3] Fdn Edmund Mach, Res & Innovat Ctr, Food Qual & Nutr Dept, Food Qual Res Grp, San Michele All Adige, TN, Italy

来源：

JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY | 2015年 / 26卷 / 03期

关键词：

Dicarboxylates; Gas-phase dianions; ESI; DESI; Mass spectrometry; DESORPTION ELECTROSPRAY-IONIZATION; DOUBLY-CHARGED ANIONS; MASS-SPECTROMETRY; SOLVENT; SPECTROSCOPY; CHEMISTRY; ACIDS;

D O I：

10.1007/s13361-014-1065-y

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A significant production of gas-phase dicarboxylate dianions has been observed in standard ESI and DESI during the analysis of small organic dicarboxylic acids under moderate or highly alkaline conditions. In ESI, this can be attributed to an excess of hydroxyl ions (OH-) which favor the formation of an high amount of dianions in solution, contemporarily trapping the potential counter ions during the ESI process. The results obtained in DESI highlight the role of the surface in trapping the counter-ions during desorption process and determining the ultimate nature of the observed gas-phase ions.

引用

页码：386 / 389

页数：4

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