The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 02, 2014
Filed:
Dec. 07, 2011
Jing HU, Guangdong, CN;
Ruifeng Zhao, Guangdong, CN;
Wenzhuang Shi, Guangdong, CN;
Feng LI, Guangdong, CN;
Rong Zhou, Guangdong, CN;
Bing Han, Guangdong, CN;
Jing Hu, Guangdong, CN;
Ruifeng Zhao, Guangdong, CN;
Wenzhuang Shi, Guangdong, CN;
Feng Li, Guangdong, CN;
Rong Zhou, Guangdong, CN;
Bing Han, Guangdong, CN;
China Tobacco Guangdong Industrial Co., Ltd., Guangdong, CN;
Abstract
The present invention discloses a method for quick and simultaneous determination of 16 inorganic anions and organic acids in tobacco by ion chromatography The retention behavior of inorganic anions and organic acids on the anion exchange column was investigated using potassium hydroxide produced by EGC-II KOH eluent autogenerator as eluent. The optimized gradient elution condition was obtained. The samples were prepared through extraction, filtration and dilution before analysis. The separation was performed on an anion exchange column. The time of the gradient elution program was 50 mins. Under the optimized conditions, the calibration of peak area for all the analytes were linear in the ranges of 10. The method in the present invention has the advantages of simplicity, rapidity and accuracy, and is able to simultaneously determine 16 inorganic anions and organic acids in tobacco by one single time of injection.