Analysis of the Sucrose Fatty Acid Esters by Atmospheric-pressure Ionization MS with Electrospray Ionization Spectrometry

Zhu Jinli; Zhang Shufen; Yang Jinzong

doi:10.3139/113.100305

Published by De Gruyter March 31, 2013

Analysis of the Sucrose Fatty Acid Esters by Atmospheric-pressure Ionization MS with Electrospray Ionization Spectrometry

Analyse von Saccharosefettsäureester durch Atmosphärendruckionisations-MS mit Elektrospray-Ionisations-Spektrometrie

Zhu Jinli , Zhang Shufen and Yang Jinzong

From the journal Tenside Surfactants Detergents

https://doi.org/10.3139/113.100305

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Abstract

Commercial and synthesized sucrose fatty acid esters were qualitatively analyzed by atmospheric-pressure ionization MS with electrospray ionization. Straight-forward mass characterization of the complex mixtures could be achieved. By using methanol/tetrahydrofuran as solvent, the constituents were identified on the basis of quasi-molecular ions. Individual components could be observed as protonated molecular ions [M+Na]⁺ and/or as their K⁺ adducts in positive mode. The mass spectrometric investigation showed that the mixtures of sucrose fatty acid esters contained mono-, di-, tri-, tetra- or polyesters; the sucrose fatty acid esters are mixture of two types of nonionic surfactants: sucrose palmitates and sucrose stearates. The results indicate the atmospheric-pressure ionization MS with electrospray ionization analysis is an effective method for the analysis of sucrose esters composed of different isomers. The rapid and highly sensitive atmospheric-pressure ionization MS with electrospray ionization analysis technique proposed here is well suited for direct characterization of sucrose esters.

Kurzfassung

Kommerzielle und synthetische Saccharosefettsäureester wurden durch Atmosphärendruckionisations-MS mit Elektrospray-Ionisation quantitativ analysiert. Es konnte eine direkte Massen-Charakterisierung der Komplexmischungen erreicht werden. Bei Verwendung von Methanol/Tetrahydrofuran als Lösungsmittel wurden die Bestandteile auf Basis von quasimolekularen Ionen identifiziert. Individuelle Komponenten konnten als protonierte molekulare Ionen [M+Na]⁺ und/oder als deren K⁺-Addukte in positiver Form beobachtet werden. Die Massenspektrometrieuntersuchung zeigte, dass Mischungen von Saccharosefettsäureestern, die Mono-, Di-, Tri-, Tetra- oder Polyester enthalten, eine Mischung aus zwei Arten von nichtionischen Tensiden sind: Saccharosepalmitate und Saccharosestearate. Die Ergebnisse zeigen, dass die Atmosphärendruckionisations-MS mit Elektrospray-Ionisation eine effektive Methode für die Analyse von Saccharoseestern darstellt, die aus verschiedenen Isomeren zusammengesetzt sind. Die hier vorgeschlagene schnelle und hochsensitive Analysentechnik mittels Atmosphärendruckionisations-MS mit Elektrospray-Ionisation ist gut geeignet für die direkte Charakterisierung von Saccharoseestern.

Key words:: Atmospheric-pressure ionization MS spectrometry; electrospray ionization; sucrose fatty acid esters; direct characterization; complex mixtures

Stichwörter:: Atmosphärendruckionisations-MS-Spektometrie; Elektrospray-Ionisation; Saccharosefettsäureester; direkte Charakterisierung; Komplexmischungen

^∗ Zhang Shufen, State key Laboratory of Fine Chemicals, Dalian University of Technology, No. 158 Zhongshan Road, Dalian 116012, P.R. China, Fax: (+86)41183673395, Tel.: (+86)41188993621. E-mail: zhangshf@chem.dlut.edu.cn

Zhu Jinli is a Ph.D student at Dalian University of Technology. Her main field of research is sucrose fatty acid ester surfactants and synthesis and physical chemistry of surfactants.

Zhang Shufen, Professor, the director of the department of fine chemicals of Dalian University of Technology. Her focus is on the synthesis of surfactants and dyes and their application.

Yang Jinzong, Professor, Academician of Chinese Academy of Engineering. His focus is on the synthesis of surfactants and dyes and their application.

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Received: 2006-02-20

Accepted: 2006-05-22

Published Online: 2013-03-31

Published in Print: 2006-09-01

Analysis of the Sucrose Fatty Acid Esters by Atmospheric-pressure Ionization MS with Electrospray Ionization Spectrometry

Abstract

Kurzfassung

References

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