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Method for determining sulfur dioxide residual quantity in Chinese herbal medicine

A technology of sulfur dioxide and traditional Chinese medicinal materials, which is applied in the field of sulfur dioxide residues, and can solve the problems of detection specificity and sensitivity that need to be further improved and improved

Inactive Publication Date: 2012-10-24
NAT INST FOR FOOD & DRUG CONTROL
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Problems solved by technology

[0006] Although the above detection methods have their own advantages, due to the difference in sample matrix, different detection methods need to be used when detecting the content of sulfur dioxide in different samples; in addition, the detection specificity and sensitivity still need to be further improved and improved

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  • Method for determining sulfur dioxide residual quantity in Chinese herbal medicine
  • Method for determining sulfur dioxide residual quantity in Chinese herbal medicine
  • Method for determining sulfur dioxide residual quantity in Chinese herbal medicine

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Embodiment Construction

[0028] The implementation process and beneficial effects of the present invention are described in detail below through specific examples, aiming to help readers better understand the essence and characteristics of the present invention, and not as a limitation to the scope of implementation of this case.

[0029] The mensuration of residual amount of sulfur dioxide in the medicinal material of embodiment

[0030] 1 Instruments and reagents

[0031] ICS-3000 ion chromatograph (Dion Corporation, USA).

[0032] 1mg / mL SO 4 2- Standard solution (GBW(E)080266, Institute of Chemistry, Chinese Academy of Metrology), anhydrous Na 2 SO 3 , NaOH (Sinopharm Chemical Reagent Co., Ltd., analytically pure), hydrochloric acid, sulfuric acid, hydrogen peroxide solution (Beijing Chemical Plant, analytically pure), On Guard II RP column (Dionne, USA), and the experimental water is Milli-Q system preparation.

[0033] 2 Methods and results

[0034] 2.1 Chromatographic conditions

[0035...

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Abstract

The invention provides a method for determining sulfur dioxide residual quantity in a Chinese herbal medicine, which comprises the following steps: using an acidification distillation method is used on a Chinese herbal medicine sample to be measured to prepare a tested solution; accurately absorbing the tested solution, using an ion chromatography, wherein a chromatographic column is IonPac AS-11-HC and a guard column is IonPac AG-11-HC, sampling, determining, calculating the sulfate radical content in the sample by using a standard curve method, and converting the content of sulfur dioxide in the sample. The method of the invention has the advantages of sensitivity, accuracy and convenience, and is suitable for detecting the sulfur dioxide residues in various Chinese herbal medicines.

Description

technical field [0001] The invention relates to a method for determining residual sulfur dioxide in Chinese medicinal materials by ion chromatography. Background technique [0002] Traditional Chinese medicine is one of the precious cultural treasures of the Chinese nation. The traditional Chinese medicine industry is my country's traditional medicine industry and an important part of my country's national economic development. Traditional Chinese medicine comes from nature, and herbal medicines account for the vast majority. In recent years, environmental pollution has become increasingly serious. Most Chinese medicinal materials have unregulated and unreasonable use of pesticides and chemical fertilizers in the planting process. At the same time, there are improper processing and processing such as sulfur fumigation in the production of decoction pieces. The source of harmful residues exceeds the standard, causing serious harm to drug safety. [0003] Sulfites (calculate...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/88G01N1/28
Inventor 马双成金红宇孙磊乔蓉霞陈佳
Owner NAT INST FOR FOOD & DRUG CONTROL
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