Invention Grant
US07855356B2 Determination of chemical empirical formulas of unknown compounds using accurate ion mass measurement of all isotopes
有权
使用所有同位素的精确离子质量测量来确定未知化合物的化学经验公式
- Patent Title: Determination of chemical empirical formulas of unknown compounds using accurate ion mass measurement of all isotopes
- Patent Title (中): 使用所有同位素的精确离子质量测量来确定未知化合物的化学经验公式
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Application No.: US12324351Application Date: 2008-11-26
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Publication No.: US07855356B2Publication Date: 2010-12-21
- Inventor: Jerry A. Zweigenbaum , Earl M. Thurman , Imma Ferrer
- Applicant: Jerry A. Zweigenbaum , Earl M. Thurman , Imma Ferrer
- Applicant Address: US CA Santa Clara
- Assignee: Agilent Technologies, Inc.
- Current Assignee: Agilent Technologies, Inc.
- Current Assignee Address: US CA Santa Clara
- Main IPC: G01N33/48
- IPC: G01N33/48
Abstract:
A method of determining an empirical formula of an analyte ion from a measured mass spectrum including a main peak and one or more isotope peaks. The method comprises comparing a relative isotopic intensity of the measured isotope peak to a calculated relative isotopic intensity of an isotopic ion of a proposed empirical formula and comparing a relative mass defect of the measured isotope peak to a calculated relative mass defect of the isotopic ion of the proposed empirical formula. The proposed empirical formula is identified as a potential candidate for the analyte ion based on these comparisons.
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