GB/T 32953-2016 in English
VALIDFertilizers - Determination of melamine content - Ion chromatographic method
- Issued on:2016-08-29
- Implemented on:2017-03-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
$97.00
《GB/T 32953-2016肥料中三聚氰胺含量的测定 离子色谱法》由TC105（全国肥料和土壤调理剂标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
GB/T32953-2016 Standard Interpretation
This standard specifies the method for determining the content of melamine in fertilizers using ion chromatography, and is applicable to the detection of melamine in compound fertilizers, organic-inorganic compound fertilizers, organic fertilizers, slow-release fertilizers and other nitrogen, phosphorus and potassium fertilizers.
Background of Standard Formulation
With the development of the fertilizer industry, melamine, as a potential illegal additive, has become increasingly urgent in terms of detection. This standard provides a scientific basis for the quantitative analysis of melamine in fertilizers based on the high-efficiency separation and sensitive detection characteristics of ion chromatography technology.
Evolution of technical methods
| Technical parameters | Ion chromatography requirements | Comparison with traditional chemical analysis methods |
|---|---|---|
| Detection sensitivity | 15.0 mg/kg ~105 mg/kg | Relatively low, requires multiple dilutions |
| Sample preparation | Ultrasonic extraction + high-speed centrifugation | Traditional immersion method takes a long time |
| Analysis time | About 30 minutes/sample | Usually takes several hours |
Practical Application Cases
Case 1:A compound fertilizer factory used this standard to detect the melamine content in its products, and the results showed that the content met the national standard requirements.
Case 2:During the quality supervision spot check, this method was used to successfully screen out a batch of melamine fertilizers containing excessive levels.
Implementation Suggestions
- The laboratory should be equipped with advanced equipment such as ion chromatographs to ensure detection accuracy.
- Operators need to undergo professional training and be familiar with standard operating procedures.
- Regularly calibrate instruments to ensure the quality of reagents and consumables.
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