GB/T 17815-2018 in English
VALIDDetermination of propionic acid,propionate in feeds
- Issued on:2018-09-17
- Implemented on:2019-04-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$156.00
《GB/T 17815-2018饲料中丙酸、丙酸盐的测定》由TC76（全国饲料工业标准化技术委员会）归口，主管部门为国家标准化管理委员会。
Introduction
National Standard of the People's Republic of China GB/T 17815—2018
Determination of Propionic Acid and Propionate in Feed
Analysis of Standard Formulation Background and Technological Evolution
GB/T 17815—2018 replaces the old standard GB/T17815—1999. The main revisions include: increasing the detection limit and quantification limit of the method, optimizing the preparation conditions of the sample solution (adjusting the phosphoric acid concentration), updating the chromatographic technology (changing the packed column to a capillary column) and introducing high performance liquid chromatography.
Comparison table of standard frameworks
| Project dimensions | Old version GB/T17815—1999 | New version GB/T17815—2018 |
|---|---|---|
| Detection method | Mainly gas chromatography | Gas chromatography + high performance liquid chromatography |
| Detection limit | Specific value not specified | Gas chromatography: 30~100 mg/kg; high performance liquid chromatography is the same as above |
| Reagent requirements | Basic reagents such as phosphoric acid and sodium chloride | Add specifications for the use of quartz sand and formic acid |
Implementation suggestions and actual cases
Laboratory implementation suggestions:
- Ensure that the equipment is upgraded to capillary columns and high-performance liquid chromatographs.
- Optimize the sample preparation process, paying special attention to phosphoric acid concentration control and distillation operations.
- It is recommended to use 5 points for linear verification when establishing a standard curve.
Actual application case:
A feed company used the new standard to test and found that the propionic acid content in its products was generally less than 3000 mg/kg. By optimizing the sample preparation process and chromatographic condition settings, the accuracy of the test results was improved by 15%, meeting export requirements.
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