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Saccharose cluster ions as mass calibrants in positive-ion direct analysis in real time-mass spectrometry
European Journal of Mass Spectrometry ( IF 1.3 ) Pub Date : 2020-09-13 , DOI: 10.1177/1469066720958535 Jürgen H Gross 1
European Journal of Mass Spectrometry ( IF 1.3 ) Pub Date : 2020-09-13 , DOI: 10.1177/1469066720958535 Jürgen H Gross 1
Affiliation
In positive-ion direct analysis in real time-mass spectrometry (DART-MS), mono-, di, and trisaccharides form [M+NH4]+ ions. Some of them, in addition, yield abundant [Mn+NH4]+ cluster ions (n = 1–6)), and thus, can serve for mass calibration. Saccharose, C12H22O11, the most common sugar, also termed sucrose, is among the [Mn+NH4]+ cluster ion forming species. Saccharose may therefore be employed as a cheap and ubiquitous mass calibration standard. The extent of saccharose cluster ion formation depends on the temperature of the DART gas, sample load, and instrumental parameters like trapping conditions of ions prior to mass analysis. This study identifies optimized experimental conditions and demonstrates the application of saccharose cluster ion-based mass calibration for accurate mass measurements in DART mode on a Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometer.
中文翻译:
蔗糖簇离子作为实时质谱正离子直接分析中的质量校准物
在实时质谱 (DART-MS) 的正离子直接分析中,单糖、二糖和三糖形成 [M+NH4]+ 离子。此外,其中一些会产生丰富的 [Mn+NH4]+ 簇离子 (n = 1–6)),因此可用于质量校准。蔗糖,C12H22O11,最常见的糖,也称为蔗糖,属于 [Mn+NH4]+ 簇离子形成物质之一。因此,蔗糖可用作廉价且普遍存在的质量校准标准。蔗糖簇离子形成的程度取决于 DART 气体的温度、样品负载和仪器参数,如质量分析前的离子捕获条件。
更新日期:2020-09-13
中文翻译:
蔗糖簇离子作为实时质谱正离子直接分析中的质量校准物
在实时质谱 (DART-MS) 的正离子直接分析中,单糖、二糖和三糖形成 [M+NH4]+ 离子。此外,其中一些会产生丰富的 [Mn+NH4]+ 簇离子 (n = 1–6)),因此可用于质量校准。蔗糖,C12H22O11,最常见的糖,也称为蔗糖,属于 [Mn+NH4]+ 簇离子形成物质之一。因此,蔗糖可用作廉价且普遍存在的质量校准标准。蔗糖簇离子形成的程度取决于 DART 气体的温度、样品负载和仪器参数,如质量分析前的离子捕获条件。