GB/T 32953-2016 English PDF

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GB/T 32953-2016: Determination of melamine content for fertilizers -- Ion chromatography (IC) method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32953-2016	119	Add to Cart	2 days	Determination of melamine content for fertilizers -- Ion chromatography (IC) method	Valid

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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

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
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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