The principle and rationality of quantitative ESI-MS method were inducted and discussed from the prospects of resolving mass spectrum assignment and transforming species in ionization. The qualitative ESI-MS results in previous studies were also analyzed by quantitative ESI-MS analysis in this work. ...
All ion heat maps were generated with a mass measurement accuracy tolerance of ±2.5 ppm. To the left of each heat map is a corresponding boxplot of raw abundance across 50-μm bins of sample height. Due to the working principle of the probe, some of the maximum heights were outside ...
Mass spectrometry (MS) offers an attractive alternative for the analysis of phospholipid compositions because of its high sensitivity, specificity, and (apparent) simplicity. However, MS has rarely been used for this purpose until very recently. The main reason for this is that the ionization method...
LC-ESI-HRMS在化合物结构研究中的应用
2018). Despite GlcN from chitin is in principle detectable in the method conditions as AccQ Tag derivatives, its content in insect samples was never determined simultaneously with the amino acid content by an UPLC-ESI/MS chromatographic method. So, the aim of this work was to optimize and ...
cv. PB D6), purified by immobilized metal ion affinity chromatography (IMAC) and then analyzed by electrospray ionization mass spectrometry (ESI-MS). Conformational and post-translational modifications were observed between these different forms of sporamin, extracted from leaves. By the combination ...
We present a novel nanoelectrospray emitter tip based on the principle of a nib rather than a nozzle for nano-electrospray ionization-mass spectrometry (ESI-MS) applications. The fabrication of the micro-nibs relies on micromachining techniques using the epoxy-based negative photoresist SU-8. A ...
This is the first study on developing a microorganism de-replication/identification method based on laser ablation electrospray ionization (LAESI) mass technology and principle component analysis (PCA). The LAESI-PCA method enables fast, economic, and reliable identification of filamentous fungi in ...
A new and easy to construct sheathless capillary electrophoresis electro spray ionization mass spectrometry (CE-ESI-MS) interface was developed that offers several advantages compared to traditional liquid junction interfaces. The fabrication of the device only requires a CO2 laser engraver that most gro...
A microfluidic system with on-chip pumping which can be used for liquid chromatography and also electrospray ionization mass spectrometry and which provides improved efficiency, better integration with sensors, improved portability, reduced power consumption, and reduced cost. The system can include (A)...