Ion exchange membrane fluid food quality detection method

Abstract

The invention discloses an ion exchange membrane fluid food quality detection method and belongs to the field of food quality detection technologies. The ion exchange membrane fluid food quality detection method includes the following steps of: fluid random sampling; solid impurity filtration; fluid food dilution; classified filtration; and chromatographic solution centrifugation: diluted fluid food which has been subjected to chromatography is centrifugated through a centrifuge, sectioned sampling is performed, a supernatant is taken so as to be subjected to component analysis and detection;and therefore, the rapid detection of fluid food can be realized, the complex process of the detection process of the fluid food can be simplified, the detection efficiency of food safety can be improved, a variety of heavy metals and harmful elements that threaten food safety can be detected in a detection process, some metal ions can be filtered out, and the impact of mutual interference betweenmetal ions on food safety detection can be decreased.

Description

technical field

[0001] The invention relates to the technical field of food quality detection, in particular to an ion exchange membrane fluid food quality detection method. Background technique

[0002] A polymer membrane that contains ionic groups and has the ability to selectively permeate ions in the solution. Because its ion selective permeability is generally used in application, it is also called ion selective permeability membrane. Ion exchange membrane is a film made of polymer material with ion exchange performance (also inorganic ion exchange membrane). shares, but their use is not yet common). It is similar to ion exchange resins, both of which connect an active group to the polymer skeleton, but the mechanism, mode and effect of action are different. There are many types of ion exchange membranes on the market, and there is no unified classification method. Generally, according to the macroscopic structure of the membrane, it can be divided into three categor...

Examples

Embodiment 1

[0043] see figure 1 , a kind of ion exchange membrane fluid food quality detection method, comprises the following steps:

[0044] Step 1. Random sampling of the fluid. The staff takes three parts of the fluid food from the raw material container, mixes them, and places them in the sample container;

[0045] Step 2. Filtration of solid impurities, placing the fluid food to be tested in the sample container, installing a solid impurity filter on the upper end of the sample container, and using the solid impurity filter to filter the impurities in the fluid food;

[0046] Step 3. Dilute the fluid food. Add purified water to dilute the filtered fluid food. The ratio of the amount of purified water added to the fluid food is three to one;

[0047] Step 4, graded filtration, the diluted fluid food is passed into the graded membrane detector, and the diluted fluid food is chromatographically flowed through the multi-layer ion exchange membrane in the graded membrane detector in seq...

technical field

[0001] The invention relates to the technical field of food quality detection, in particular to an ion exchange membrane fluid food quality detection method. Background technique

[0002] A polymer membrane that contains ionic groups and has the ability to selectively permeate ions in the solution. Because its ion selective permeability is generally used in application, it is also called ion selective permeability membrane. Ion exchange membrane is a film made of polymer material with ion exchange performance (also inorganic ion exchange membrane). shares, but their use is not yet common). It is similar to ion exchange resins, both of which connect an active group to the polymer skeleton, but the mechanism, mode and effect of action are different. There are many types of ion exchange membranes on the market, and there is no unified classification method. Generally, according to the macroscopic structure of the membrane, it can be divided into three categor...

Examples

Embodiment 1

[0043] see figure 1 , a kind of ion exchange membrane fluid food quality detection method, comprises the following steps:

[0044] Step 1. Random sampling of the fluid. The staff takes three parts of the fluid food from the raw material container, mixes them, and places them in the sample container;

[0045] Step 2. Filtration of solid impurities, placing the fluid food to be tested in the sample container, installing a solid impurity filter on the upper end of the sample container, and using the solid impurity filter to filter the impurities in the fluid food;

[0046] Step 3. Dilute the fluid food. Add purified water to dilute the filtered fluid food. The ratio of the amount of purified water added to the fluid food is three to one;

[0047] Step 4, graded filtration, the diluted fluid food is passed into the graded membrane detector, and the diluted fluid food is chromatographically flowed through the multi-layer ion exchange membrane in the graded membrane detector in seq...

Images