Method for synchronously detecting content of food additives and heavy metals in food in inverse HPLC-ICP-MS method

A technology of HPLC-ICP-MS and food additives, which is applied in the field of detection of food additives and heavy metal content in food, achieves the effects of improving work efficiency, reducing the tedious operation and saving time.

Inactive Publication Date: 2017-05-10
GUANGXI UNIV FOR NATITIES
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Problems solved by technology

Although HPLC-ICP-MS combined detection technology has been reported and researched, there is no report on the simultaneous detection of multiple food additives and heavy metals in food by reversed-phase HPLC-ICP-MS

Method used

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  • Method for synchronously detecting content of food additives and heavy metals in food in inverse HPLC-ICP-MS method
  • Method for synchronously detecting content of food additives and heavy metals in food in inverse HPLC-ICP-MS method
  • Method for synchronously detecting content of food additives and heavy metals in food in inverse HPLC-ICP-MS method

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Embodiment Construction

[0036] In order to better understand the present invention, the present invention will be further described below in conjunction with examples. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

[0037] 1. Determination of chromatographic conditions and drawing of the standard curve of the mixed solution

[0038] (1) Preparation of mixed standard solutions of food additives and heavy metals

[0039] 1. Preparation of food additive standard solution: Accurately weigh 0.1g each of tartrazine, sunset yellow, carmine, sodium saccharin, acesulfame potassium, benzoic acid,...

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Abstract

The invention discloses a method for synchronously detecting a content of food additives and heavy metals in food in an inverse HPLC-ICP-MS method. The method comprises the following steps: connecting an HPLC device and an ICP-MS device by virtue of a dedicated interface system (5) of Agilent company, detecting the content of the food additives in a processed food sample by virtue of HPLC, and then inputting the food sample flowing by the HPLC into the ICP-MS to perform the heavy metal content detection by virtue of the interface system (5). By adopting the method, the content of the food additives and heavy metals in the food can be rapidly, accurately and synchronously detected, not only can the sampling amount of the sample to be detected and the pretreatment amount of the sample be reduced, but also the operation complexity caused by separate detection and separate sample feeding of different instruments can be reduced, the detection time is greatly shortened, and the working efficiency is improved. The detection time of the two instruments is respectively about 6 hours, and after the two instruments are combined to use, the time is about 4.8 hours, and the time is saved by about 20 percent.

Description

technical field [0001] The invention belongs to the technical field of food detection, in particular to a detection method for food additives and heavy metal content in food. Background technique [0002] Food additive is an additive added to food to ensure the appearance and taste of food. It is an indispensable and important raw and auxiliary material in the modern food industry. It can improve the quality, color and taste of food, prolong the shelf life of food, and improve Nutritional value of food, etc. Its main raw materials are mainly chemical synthetic substances and natural substances. Both chemical additives and natural additives have certain toxic components, but the harmfulness of this toxic component is related to the dosage of the additive and the chemical reaction of the human body. will have an impact on human health. my country's "Hygienic Standards for the Use of Food Additives" GB2760-1996 divides them into 22 categories such as preservatives, sweeteners...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/02
CPCG01N30/88
Inventor 蓝丽红王佳琪艾光湧蓝平廖安平
Owner GUANGXI UNIV FOR NATITIES
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