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Method for fast measuring melamine in food by anthraquinone-2-sodium sulfonate sensor

A technology of melamine and sodium sulfonate, applied in the direction of electrochemical variables of materials, can solve problems such as death, and achieve the effect of low cost, real-time detection, supervision and supervision.

Inactive Publication Date: 2013-05-22
中国人民共和国泰安出入境检验检疫局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Melamine has certain nephrotoxicity, which can lead to death in severe cases
However, there are few reports on chemical sensors for the rapid detection of melamine

Method used

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  • Method for fast measuring melamine in food by anthraquinone-2-sodium sulfonate sensor

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention, but the present invention is not limited thereto.

[0024] The method for quickly measuring melamine in a sample using an anthraquinone-2-sodium sulfonate sensor comprises the following steps:

[0025] a. Preparation of melamine standard solution: Weigh melamine standard product, dissolve it with methanol and dilute it in a 100mL volumetric flask, prepare a standard solution with a concentration of 1 mol / L, and store it in the dark at 4°C;

[0026] Preparation of sodium anthraquinone-2-sulfonate solution: Accurately weigh 0.6205 g of AQ, dissolve it in phosphate buffer with a pH of 4.0 and a concentration of 0.1mol / L to 200mL, and prepare anthracene with a concentration of 0.01mol / L Sodium quinone-2-sulfonate stock solution, diluted with buffer solution to the correspon...

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Abstract

The invention belongs to the field of food detection, and particularly relates to a method for fast measuring melamine in a sample by an anthraquinone-2-sodium sulfonate sensor. The method comprises the following steps of: preparing a standard melamine solution; drawing a standard curve; preparing a sample to be measured; and detecting the sample. The method disclosed by the invention can be used for detecting whether melamine is contained in the food sample or not and the melamine content, has the advantages of real-time and fast detection, can complete the integral detection process within 30 minutes, achieve the minimal detection limit at 5.00*10<-9>M (0.6 microgram / millilitre) and bring about great convenience for the supervision and control of market food safety, and has the advantages of low detection cost, real-time and fast detection on food in market and production, and the like.

Description

technical field [0001] The invention belongs to the field of food detection, and in particular relates to a method for quickly measuring melamine in a sample by using an anthraquinone-2-sodium sulfonate sensor. Background technique [0002] Over the years, food safety has always been a topic of concern to people. From 2006, the pet food exported by my country contained melamine, which was investigated by the United States. In 2009, the outbreak of melamine in some infant formula milk powder in China made people worry about melamine in food and feed. attention has reached a peak. [0003] Melamine is a triazine nitrogen-containing heterocyclic organic compound, commonly used in wood processing, plastics, coatings, papermaking, textiles, leather, electrical, pharmaceutical and other industries. Melamine has certain nephrotoxicity, which can lead to death in severe cases. Since the average nitrogen content of protein is only 16%, while the nitrogen content of melamine is about...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/48
Inventor 贝峰聂梅姜宁鹏凌宗帅艾仕云
Owner 中国人民共和国泰安出入境检验检疫局