GB/T 4372.3-2015 English PDF

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GB/T 4372.3-2015: Methods for chemical analysis of zinc oxide produced by direct process -- Part 3: Determination of copper oxide content -- Flame atomic absorption spectrometry method
Status: Valid

GB/T 4372.3: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4372.3-2015	109	Add to Cart	3 days	Methods for chemical analysis of zinc oxide produced by direct process -- Part 3: Determination of copper oxide content -- Flame atomic absorption spectrometry method	Valid
GB/T 4372.3-2001	199	Add to Cart	3 days	Methods for chemical analysis of zinc oxide produced by direct process -- Determination of copper oxide content -- Atomic absorption spectrometry method	Obsolete
GB/T 4372.3-1984	RFQ	ASK	3 days	Methods for chemical analysis of zinc oxide (direct process)--The biscyclohexanone oxalyl dihydrazone photometric method for the determination of copper oxide content	Obsolete

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GB/T 3884.2   GB/T 3884.1   GB/T 4103.14   GB/T 4372.4   GB/T 4372.2   GB/T 4372.5   

Basic data

Standard ID: GB/T 4372.3-2015 (GB/T4372.3-2015)
Description (Translated English): Methods for chemical analysis of zinc oxide produced by direct process -- Part 3: Determination of copper oxide content -- Flame atomic absorption spectrometry method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.60
Word Count Estimation: 5,527
Date of Issue: 2015-09-11
Date of Implementation: 2016-04-01
Older Standard (superseded by this standard): GB/T 4372.3-2001
Regulation (derived from): National Standard Announcement 2015 No.25
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
Summary: This standard specifies the direct method for the determination of copper oxide in the amount of copper oxide. This standard is applicable to the determination of the amount of copper oxide in direct zinc oxide. Determination range: copper oxide: 0.000 5% to 0.020%.

GB/T 4372.3-2015: Methods for chemical analysis of zinc oxide produced by direct process -- Part 3: Determination of copper oxide content -- Flame atomic absorption spectrometry 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.
Methods for chemical analysis of zincoxide produced by direct process.Part 3. Determination of copper oxide content.Flame atomic absorption spectrometry method ICS 77.120.60 H13 National Standards of People's Republic of China Replace GB/T 4372.3-2001 Direct method of chemical analysis of zinc oxide Part 3. determination of the amount of copper oxide Flame atomic absorption spectrometry Part 3. Determination ofcopperoxidecontent- 2015-09-11 release 2016-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released

Foreword

GB/T 4372 "Direct method of zinc oxide chemical analysis method" is divided into seven parts. - Part 1. Determination of zinc oxide content Na2EDTA titration; - Part 2. Determination of lead oxide - Flame atomic absorption spectrometric method; - Part 3. Determination of copper oxide - Flame atomic absorption spectrometric method; - Part 4. Determination of cadmium oxide - Flame atomic absorption spectrometric method; - Part 5. Determination of manganese content - Flame atomic absorption spectrometric method; - Part 6. Inspection of metallic zinc; - Part 7. Determination of ferric oxide content - Flame atomic absorption spectrometric method. This part is part 3 of GB/T 4372. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part of the GB/T 4372.3-2001 "direct method of zinc oxide chemical analysis method atomic absorption spectrometry determination of copper oxide." Compared with GB/T 4372.3-2001, there are the following changes. --- the text format has been modified; - the determination of copper from 0.0005% to 0.010% to 0.0005% to 0.020%; - Added precision and test reports. This part is the national nonferrous Metals Standardization Technical Committee (SAC/TC243). This part is responsible for drafting units. Hunan Shuikoushan Nonferrous Metals Group Corporation, Hunan Nonferrous Metals Research Institute. This part of the drafting unit. Hunan Shuikoushan Nonferrous Metals Group. This part participates in the drafting unit. Beijing Nonferrous Metals Research Institute, China Nonferrous Guilin Mineral Geology Research Institute Co., Ltd., Hunan Nonferrous Metals Geological Exploration Institute, Guangzhou Nonferrous Metals Research Institute, Yunnan Yunzhu Zinc Industry Co., Ltd. This part of the main drafters. Xia Bingwei, Ouyang Li Li, Zheng Xueying, Ding Hao, Li Manzhi, Wang Jiangliang, Lu Qiyu, Li Jinyan, Wei Xianghui, Xie Hui, Li Xiaoling, Yang Deli, Huang Ping, Jiang Bo, Yang Hongxian, Chen Guomu. This part of the previous version of the standard to replace the release of the situation. --- GB/T 4372.3-1984; --- GB/T 4372.3-2001. Direct method of chemical analysis of zinc oxide Part 3. determination of the amount of copper oxide Flame atomic absorption spectrometry

1 Scope

This part of GB/T 4372 specifies the method for the determination of the amount of copper oxide in direct zinc oxide. This part is applicable to the determination of the amount of copper oxide in direct zinc oxide. Determination range. copper oxide. 0.0005% ~ 0.020%.

2 method summary

The sample was dissolved in nitric acid and used in a dilute nitric acid medium using an air-acetylene flame at an atomic absorption spectrometer wavelength of 324.8 nm Copper absorbance, the standard curve method to calculate the amount of copper oxide, cadmium oxide.

3 reagent

Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity were used in the analysis. 3.1 nitric acid (ρ = 1.42 g/mL). 3.2 nitric acid (1 1). 3.3 copper standard storage solution. Weigh 0.1000g pure copper (wCu ≥ 99.99%) in 300mL beaker, add 10mL nitric acid (3.1), Dissolved in low temperature heating, boil nitrogen removal of the oxide, cooling, into the 1000mL volumetric flask, add 40mL nitric acid (3.1), diluted with water To the scale, mix. This solution contains 1 g of 100 g of copper. 3.4 Copper standard solution. Remove 10.00mL copper standard storage solution (3.3) In a 100mL volumetric flask, add 5mL nitric acid (3.1), add Water diluted to the mark, mix well. 1 mL of this solution contains 10 g of copper.

4 instruments

Atomic Absorption Spectrometer, Copper Hollow Cathode Lamp. In the best working conditions of the instrument, who can meet the following indicators can be used. Sensitivity. The concentration of copper in the solution consistent with the measurement sample solution matrix should not be greater than 0.035 μg/mL. Precision. the highest concentration of the standard solution measured 10 times the absorbance, the standard deviation should not exceed 1.0% of the average absorbance; with the most Low standard solution (not zero standard solution) measured 10 times the absorbance, the standard deviation does not exceed the maximum concentration of standard solution average absorbance 0.5% of the degree. The linearity of the working curve. the ratio of the difference between the absorbance difference and the absorbance difference of the lowest section is divided into five segments according to the concentration, Should not be less than 0.7.

5 samples

5.1 Specimen size should be less than 0.10mm. ......

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