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首页> 外文期刊>Journal of mass spectrometry: JMS >Evaluation of a new matrix-free laser desorption/ionization method through statistic studies: comparison of the DIAMS (desorption/ionization on self-assembled monolayer surface) method with the MALDI and TGFA-LDI techniques
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Evaluation of a new matrix-free laser desorption/ionization method through statistic studies: comparison of the DIAMS (desorption/ionization on self-assembled monolayer surface) method with the MALDI and TGFA-LDI techniques

机译：通过统计研究评估一种新的无基质激光解吸/电离方法：DIAMS（自组装单层表面上的解吸/电离）方法与MALDI和TGFA-LDI技术的比较

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摘要

This work demonstrates that the desorption/ionization on self-assembled monolayer surface (DIAMS) mass spectrometry, a recent matrix-free laser desorption/ionization (LDI) method based on an organic target plate, is as statistically repeatable and reproducible as matrix assisted laser deorption ionization (MALDI) and thin gold film-assisted laser desorption/ionization (TGFA-LDI) mass spectrometries. On lipophilic DIAMS of target plates with a mixture of glycerides, repeatability/reproducibility has been estimated at 15 and 30% and the relative detection limit has been evaluated at 0.3 and 3 pmol, with and without NaI respectively. Salicylic acid and its d(6)-isomer analysis confirm the applicability of the DIAMS method in the detection of compounds of low molecular weight.
机译：这项工作表明，自组装单层表面（DIAMS）质谱上的解吸/电离是一种基于有机靶板的最新无基质激光解吸/电离（LDI）方法，与基质辅助激光在统计学上可重复和可再现解吸电离（MALDI）和金薄膜辅助激光解吸/电离（TGFA-LDI）质谱。在含有甘油酯混合物的目标板的亲脂性DIAMS上，重复性/重现性估计为15％和30％，相对检测限分别为0.3和3 pmol（有和没有NaI）。水杨酸及其d（6）-异构体分析证实了DIAMS方法在检测低分子量化合物中的适用性。

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