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GB/T 32953-2016: Determination of melamine content for fertilizers -- Ion chromatography (IC) method
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 32953-2016 | English | 119 |
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Determination of melamine content for fertilizers -- Ion chromatography (IC) method
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GB/T 32953-2016
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Basic data | Standard ID | GB/T 32953-2016 (GB/T32953-2016) | | Description (Translated English) | Determination of melamine content for fertilizers -- Ion chromatography (IC) method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G20 | | Classification of International Standard | 65.080 | | Word Count Estimation | 6,613 | | Date of Issue | 2016-08-29 | | Date of Implementation | 2017-03-01 | | Regulation (derived from) | National Standard Notice No.1416 of 2016 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 32953-2016: Determination of melamine content for fertilizers -- Ion chromatography (IC) method
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Determination of melamine content for fertilizers - Ion chromatography (IC) method
ICS 65.080
G20
National Standards of People's Republic of China
Determination of Melamine Content in Fertilizers
Ion chromatography
Determination of melaminecontentforfertilizers-
Ionchromatography (IC) method
2016-08-29 released
2017-03-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
This standard is drafted in accordance with the rules given in GB/T 1.1-2009.
This standard is proposed by the China Petroleum and Chemical Industry Association.
This standard is regulated by the National Technical Committee on Standardization of Fertilizers and Soil Conditioners (SAC/TC105).
The drafting unit of this standard. Shanghai Entry-Exit Inspection and Quarantine Bureau of industrial products and raw materials testing technology center, Shanghai Chemical Industry Research Institute.
The main drafters of this standard. Min Hong, Sun Mingxing, Cai Jing, Zhou Hui, Liu Gang, Zhu Zhixiu, Mao Yehui, Tu Hong, Zhang Jidong, Liu Yun.
Determination of Melamine Content in Fertilizers
Ion chromatography
WARNING. This standard may involve the safety of hazardous substances, hazardous operations and equipment. This standard does not indicate all possible security questions
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the requirements of the relevant national regulations.
1 Scope
This standard specifies the determination of melamine in fertilizers by ion chromatography.
This standard applies to compound fertilizer (compound fertilizer), organic - inorganic compound fertilizer, organic fertilizer, slow release fertilizer and other nitrogen, phosphorus and potassium fertilizers
Determination of melamine content, the determination of content range of 15.0mg/kg ~ 105mg/kg.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2. Determination of standard measurement methods
The basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
GB/T 8571 Compound Fertilizer Laboratory Sample Preparation
3 method summary
The samples were washed with ammonia aqueous solution of water by ultrasonic, and centrifuged at high speed after extraction. The supernatant was purged with nitrogen, dissolved in volume, and ion chromatographed
To detect, external standard method quantitative.
4 reagents and materials
Unless otherwise specified, the use of analytical reagents, the experimental water for the GB/T 6682 provides a level of water.
4.1 methanol. pure chromatography.
4.2 acetonitrile. pure chromatography.
4.3 Methylsulfonic acid. Chromatographic purity.
4.4 ammonia. the content of 25% to 28%.
4.5 Melamine standards, purity greater than 99.9%, CAS. 108-78-1.
4.6 aqueous ammonia solution. the amount of 20mL ammonia, 70mL methanol and 10mL of pure water, mix. Prepare before use.
4.7 Ion Chromatography Eluent. Weigh 0.29 g of methanesulfonic acid in a 1 L volumetric flask, add 150 mL of acetonitrile, diluted with pure water to the mark.
4.8 standard stock solution. Weigh 1g (accurate to 0.1mg) melamine standards, dissolved in pure water in a 1L volumetric flask, prepared into
The standard stock solution at a concentration of 1000 mg/L was stored in a refrigerator at 4 ° C.
4.9 Standard Intermediate. Take 10 mL of the standard stock solution (see 4.8) in a 100 mL volumetric flask and set to 100 mL with pure water. The solution
Melamine concentration of 100mg/L.
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