期刊
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
卷 20, 期 7, 页码 1355-1358出版社
SPRINGER
DOI: 10.1016/j.jasms.2009.03.021
关键词
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资金
- Fujian Province Department of Science and Technology
- National Natural Science Foundation of China
- National 863 program
Semiquantitative multielemental analyses of biological samples (tea leaf standard, Laminaria japonica, and pig skin) were demonstrated with a newly developed laser ionization orthogonal time-of-flight mass spectrometer (LI-O-TOFMS). The sample was directly ablated and ionized with high irradiance after simple sample preparation. Relative sensitivity coefficients (RSC) were calculated and evaluated for sensitivity differences. Due to the employment of a collisional cooling device and the orthogonal geometry of the TOF system, high resolving power can be obtained, such that elemental peaks and interferential peaks with the same nominal mass can be distinguished. The detection limit of mu g g(-1) levels can be commonly achieved for elemental determination. (J Am Soc Mass Spectrom 2009, 20, 1355-1358) (C) 2009 American Society for Mass Spectrometry
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