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Regeneration method of cation exchange resin for amino acid analysis

A technology of cation exchange and amino acid, which is applied in the direction of ion exchange regeneration, ion exchange, chemical instruments and methods, etc., can solve the problems of resin regeneration interference, high resin loss, poor operability, etc. Few, highly operable effects

Inactive Publication Date: 2015-02-25
INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because one of the cleaning liquids is 2mol / L sodium hydroxide solution, it can chemically react with the sand core funnel, affect the internal structure of the sand core funnel, and cause unnecessary interference to resin regeneration. Using this method, resin loss More, less maneuverability

Method used

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  • Regeneration method of cation exchange resin for amino acid analysis
  • Regeneration method of cation exchange resin for amino acid analysis
  • Regeneration method of cation exchange resin for amino acid analysis

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0033] Cation exchange resin to be regenerated: The amino acid analysis column of L-8900 Hitachi Amino Acid Automatic Analyzer decreases after being used for a period of time, and the cation exchange resin in the separation column is taken out as the cation exchange resin to be regenerated.

[0034] Ultrasonic instrument: ultrasonic cleaning machine (D-78224 Singen / Htw); ultrasonic cleaning parameters: frequency 26 KHz, power 60W, temperature 22°C, duration 5 minutes, medium is water, water level is higher than the lowest in the ultrasonic container water line.

[0035] Centrifugation conditions: the rotation speed is 4000 rpm, and the duration is 5 minutes.

[0036] The amount of reagent used for each ultrasonic cleaning: 15 mL / g resin.

[0037] Regeneration steps: put 15 grams of the cation exchange resin to be regenerated into a centrifuge tube (the material of the centrifuge tube is polypropylene), and then use ultrapure water to ultrasonically clean once, acetone ultraso...

no. 2 example

[0049] Cation exchange resin to be regenerated: The amino acid analysis column of L-8900 Hitachi Amino Acid Automatic Analyzer is used for a period of time, and the column efficiency decreases. The cation exchange resin in the separation column is taken out as the cation exchange resin to be regenerated.

[0050] Ultrasonic instrument: ultrasonic cleaning machine (D-78224 Singen / Htw); ultrasonic cleaning parameters: frequency 28KHz, power 60W, temperature 0°C, duration 3 minutes, medium is water, water level is higher than the lowest water level in the ultrasonic container line.

[0051] Centrifugation conditions: the rotation speed is 3000 rpm, and the duration is 3 minutes.

[0052] The amount of reagent used for each ultrasonic cleaning: 18 mL / gram of resin.

[0053] Regeneration steps: put 18 grams of the cation exchange resin to be regenerated into a centrifuge tube (the material of the centrifuge tube is polypropylene), and then use ultrapure water to ultrasonically clean...

no. 3 example

[0065] Cation exchange resin to be regenerated: The amino acid analysis column of L-8900 Hitachi Amino Acid Automatic Analyzer decreases after being used for a period of time, and the cation exchange resin in the separation column is taken out as the cation exchange resin to be regenerated.

[0066] Ultrasonic instrument: ultrasonic cleaning machine (D-78224 Singen / Htw); ultrasonic cleaning parameters: frequency 30KHz, power 60W, temperature 30°C, duration 4 minutes, medium is water, water level is higher than the lowest water level in the ultrasonic container line.

[0067] Centrifugation conditions: the rotating speed is 5000 rpm, and the duration is 4 minutes.

[0068] The amount of reagent used for each ultrasonic cleaning: 20 mL / gram of resin.

[0069] Regeneration steps: put 20 grams of the cation exchange resin to be regenerated into a centrifuge tube (the material of the centrifuge tube is polypropylene), and then ultrasonically clean it once with ultrapure water, onc...

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Abstract

The invention provides a regeneration method of a cation exchange resin for amino acid analysis. The regeneration method comprises steps of washing the cation exchange resin by ultrapure water, acetone, ultrapure water, waterless ethanol, ultrapure water, a water solution of hydrochloric acid, ultrapure water, a water solution of sodium hydroxide, and ultrapure water in sequence through an ultrasonic mode, and the supernate is discarded in each step of ultrasonic washing. When a cation exchange resin, which is regenerated by the provided method, is applied to amino acid analysis, the analyzing performance of the resin is prominently improved, and thus a good regeneration effect is achieved.

Description

technical field [0001] The invention relates to a regeneration method of a cation exchange resin, which is especially suitable for the regeneration of the cation exchange resin for analyzing amino acids. Background technique [0002] In the analysis of amino acids, cation exchange resins are commonly used, but the performance of the resins deteriorates after a period of use, resulting in a decrease in column efficiency and affecting the accuracy of test results. Wang Chengzhi of Shandong Academy of Agricultural Sciences published a method for regeneration of ion exchange resins for amino acid analysis, which included soaking the resin in different cleaning solutions and removing the cleaning solution with a sand core funnel. Since one of the cleaning solutions is 2mol / L sodium hydroxide solution, it can chemically react with the sand core funnel, affect the internal structure of the sand core funnel, and cause unnecessary interference to resin regeneration. Using this method...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J49/00B01J49/53
CPCB01J49/53
Inventor 徐向锋杜丽常建军宋晓东蔡宁
Owner INNER MONGOLIA MENGNIU DAIRY IND (GRP) CO LTD
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