作者: Sachie Shibayama , Hiroshi Sakamaki , Taichi Yamazaki , Akiko Takatsu
DOI: 10.1016/J.CHROMA.2015.06.033
关键词:
摘要: Abstract We have developed a highly sensitive method for the analysis of deoxynucleotide monophosphates (dNMPs), which involves use liquid chromatography/mass spectrometry (LC/MS) and new metal-free column. The column solves problem that phosphate group in dNMPs interacts with metal portion device or After optimization analytical conditions, limits detection (LODs) were from 5.4 ng/g to 6.3 ng/g. Those values 10 times lower than LODs previous methods. applied determination base composition quantification 20-mer oligonucleotide. Despite very small sample amount 14.5 ng, we able determine composition, result was consistent theoretical values. also quantify mass fraction oligonucleotide 8.2% expanded uncertainty ( k = 2). By means method, analyze high sensitivity as well despite sample.