Measuring method of arsenic in food, health care product and biological sample

A technology for biological samples and determination methods, which is applied in material excitation analysis, fluorescence/phosphorescence, etc., can solve the problems of large amount of reagents, prone to carbonization, and long time required for dry ash method, and achieves the effect of low accuracy
CN1475794AInactive Publication Date: 2004-02-18济南市疾病预防控制中心
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
济南市疾病预防控制中心
Publication Date
2004-02-18
Estimated Expiration
Not applicable · inactive patent

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Abstract

A method for detecting the As in food, health-care food, or biological specimen includes dissolving the specimen in nitric acid and hydrogenperoxide mixture under action of microwave, adding the mixed solution of 150 g / L thiourea and 100g / L VC, mixing, taking 25ml solution laying aside at orinary temp for 40-50 min, and atomic spectrofluorimetry. Its advantages are high speed, correctness and sensitivity.
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Description

(1) Technical field

[0001] The invention relates to a method for directly measuring the content of arsenic in various foods, health products and biological samples by using microwave digestion, which belongs to the technical field of physical and chemical testing, and specifically relates to the technical field of trace element determination. (2) Background technology

[0002] The determination of arsenic is usually carried out by spectrophotometry, hydride generation atomic absorption spectrophotometry, hydride generation atomic fluorescence spectrometry, polarography and arsenic spot method, among which non-dispersive atomic fluorescence technology has developed rapidly in my country since the 1980s. Fast, become a new trace analysis technique. For example, "Food Hygienic Physical and Chemical Inspection Standard Manual" edited by Yang Huifen, China Standard Press, 1998: 92-95, has listed hydride atomic fluorescence spectrometry for the determination of arsenic in food as a...

Claims

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