Method for determining residual quantity of sulfur dioxide in Chinese herbal medicines

A technology of sulfur dioxide and Chinese medicinal materials, which is applied in the field of determination of residual sulfur dioxide in Chinese medicinal materials, and achieves the effects of low detection cost, safe operation and simple reaction method
CN103529008AInactive Publication Date: 2014-01-22成都捷洱健康科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
成都捷洱健康科技有限公司
Publication Date
2014-01-22
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a method for determining the residual quantity of sulfur dioxide in Chinese herbal medicines. The method comprises the following operation steps: (1) taking the Chinese herbal medicines to be determined, and preparing a test solution; (2) taking sulfite as a reference substance, and preparing a reference substance solution; (3) respectively taking the test solution and the reference substance solution, adding an ortho-phthalaldehyde solution and an ammonium salt solution for reaction in a buffer solution, standing after the reaction is over and stopped, and determining the residual quantity of sulfur dioxide in Chinese herbal medicines by a fluorescence derivatization method. According to the method for determining the residual quantity of sulfur dioxide in Chinese herbal medicines, the residual quantity of sulfur dioxide in Chinese herbal medicines can be accurately and fast determined, and the reaction method is simpler and more convenient and is higher in practicability while the accuracy is equivalent to that of a pharmacopoeia method.
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Description

technical field

[0001] The invention relates to a method for measuring residual sulfur dioxide in Chinese medicinal materials. Background technique

[0002] Sulfur is an ancient drug used to prevent insects in traditional Chinese medicine. Many traditional Chinese medicinal materials are sulfur-fumigated when they are processed. There are many changes in the chemical composition, and the residual sulfur dioxide in the fumigated Chinese medicinal materials is very harmful to the human body. The 2005 edition of the "Chinese Pharmacopoeia" canceled the "sulfur fumigation curing method" for medicinal materials, and listed it in the appendix of the 2010 edition of the "Chinese Pharmacopoeia". Added the determination method of residual sulfur dioxide based on the distillation method. Since this method requires a special all-glass distillation instrument, its popularization is very slow. Chromatography and ion chromatography, etc., but the pararosaniline hydrochloride method needs...

Claims

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