CE-ESI-MS coupled with dynamic pH junction online concentration for analysis of peptides in human urine samples

Solid-phase extraction-field-amplified s

Solid-phase extraction-field-amplified sample injection coupled with CE-ESI-MS for online pre-concentration and quantitative analysis of brain-gut peptides

✍ Hongzhi Ye; Shifei Xia; Lishuang Yu; Xueqin Xu; Chunsong Zheng; Huifeng Xu; Lili 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 174 KB

## Abstract In order to improve the sensitivity of CE‐ESI‐MS for the analysis of brain‐gut peptides, a solid‐phase extraction combined with field‐amplified sample injection was used for the pre‐concentration of the brain‐gut peptides. Compared with the conventional pressure injection method, the se