Development of lithium attachment mass spectrometry - knudsen effusion and chemical ionisation mass spectrometry (KEMS, CIMS).
Development of lithium attachment mass spectrometry - knudsen effusion and chemical ionisation mass spectrometry (KEMS, CIMS).
复制标题
开发锂附着质谱 - 克努森渗流和化学电离质谱(KEMS、CIMS)。
DOI:
10.1039/c7an01161j
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Booth AM
中科院分区:
文献类型:
--
作者:
Booth AM
Lithium ion attachment mass spectrometry provides a non-specific, non-fragmenting, sensitive and robust method for the detection of volatile species in the gas phase. The design, manufacture and results of lithium based ion attachment ionisation sources for two different mass spectrometry systems are presented. In this study trace gas analysis is investigated using a modified Chemical Ionization Mass Spectrometer (CIMS) and vapour pressure measurements are made using a modified Knudsen Effusion Mass Spectrometer (KEMS). In the Li+ CIMS, where the Li+ ionization acts a soft and unselective ionization source, limits of detection of 0.2 ppt for formic acid, 15 ppt for nitric acid and 120 ppt for ammonia were achieved, allowing for ambient measurements of such species at atmospherically relevant concentrations. In the first application of Lithium ion attachment in ultra-high vacuum (UHV), vapor pressures of various atmospherically relevant species were measured with the adapted KEMS, giving measured values equivalent to previous results from electron impact KEMS. In the Li+ KEMS vapour pressures <10−3 mbar can be measured without any fragmentation, as is seen with the initial electron impact (EI) set up, allowing the vapor pressure of individual components within mixtures to be determined.
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影响因子:
11.4
作者:
T. Bannan;A. M. Booth;Benjamin T. Jones;S. O'Meara;M. Barley;I. Riipinen;Carl J. Percival;D. Topping
通讯作者:
T. Bannan;A. M. Booth;Benjamin T. Jones;S. O'Meara;M. Barley;I. Riipinen;Carl J. Percival;D. Topping
DOI:
10.1116/1.1798751
发表时间:
2004
期刊:
Journal of Vacuum Science and Technology
影响因子:
--
作者:
Megumi Nakamura;Y. Shiokawa;T. Fujii;M. Takayanagi;M. Nakata
通讯作者:
M. Nakata
DOI:
10.5194/amt-2017-224
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Krieger U
通讯作者:
Krieger U
影响因子:
1.8
作者:
Samuel J. Edwards;C. G. Freeman;M. McEwan;P. Wilson
通讯作者:
P. Wilson
影响因子:
1.6
作者:
P. Selvin;T. Fujii
通讯作者:
T. Fujii