Detection of Neutral CO Lost During Ionic Dissociation Using Atmospheric Pressure Thermal Dissociation Mass Spectrometry (APTD-MS)
Detection of Neutral CO Lost During Ionic Dissociation Using Atmospheric Pressure Thermal Dissociation Mass Spectrometry (APTD-MS)
复制标题
使用大气压热解离质谱 (APTD-MS) 检测离子解离过程中损失的中性 CO
DOI:
10.1007/s13361-018-2055-2
复制
发表时间:
2018
影响因子:
3.2
通讯作者:
Chen, Hao
中科院分区:
文献类型:
--
作者:
Zhao, Pengyi;White, Travis;Graham Cooks, R.;Chen, Qinghao;Liu, Yong;Chen, Hao
Elucidation of ion dissociation patterns is particularly important to structural analysis by mass spectrometry (MS). However, typically, only the charged fragments from an ion dissociation event are detected in tandem MS experiments; neutrals are not identified. In recent years, we have developed an atmospheric pressure thermal dissociation (APTD) technique that can be applied to dissociate ions at atmosphere pressure and thus provide one way to characterize neutral fragments. In this paper, we focus on the detection of neutral CO resulting from amino acid and peptide ion dissociation. In the first set of experiments, several protonated amino acids (e.g., + 1 ion of phenylalanine) were found to undergo loss of a neutral (s) of total mass 46 Da, a process leading to iminium ion formation. We successfully detected the neutral species CO by using a CO sensor, UV-Vis and MS analysis following selective CO trapping with a rhodium complex. The capture of CO from dissociation of protonated amino acids supports the assignment of the loss of 46 Da to neutral losses of CO and H2O, rather than loss of formaldehyde or dihydroxycarbene, other possible fragmentation pathways that have been subject of debate for a long time. In a second experiment, we used the APTD method in combination with the CO detection technique, to demonstrate the formation of CO in the conversion ofbions toaions during peptide ion dissociations. These results showed the potential of APTD in the elucidation of ion dissociation mechanisms, using simple home-built apparatus.
登录
查看更多内容
影响因子:
2
作者:
B. Paizs;S. Suhai
通讯作者:
S. Suhai
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
S. Bouchonnet;J. Denhez;Y. Hoppilliard;C. Mauriac
通讯作者:
C. Mauriac
影响因子:
6.6
作者:
G. S. Marks;H. Vreman;B. McLaughlin;J. Brien;K. Nakatsu
通讯作者:
G. S. Marks;H. Vreman;B. McLaughlin;J. Brien;K. Nakatsu
影响因子:
4
作者:
Atkin, Anthony J.;Lynam, Jason M.;Fairlamb, Ian J. S.
通讯作者:
Fairlamb, Ian J. S.
影响因子:
7.4
作者:
JOHNSON, RS;MARTIN, SA;WATSON, JT
通讯作者:
WATSON, JT