GB/T 4372.2-2014 English PDF

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GB/T 4372.2-2014: Methods for chemical analysis of zinc oxide produced by direct process -- Part 2: Determination of lead oxide content -- Flame atomic absorption spectrometry method
Status: Valid

GB/T 4372.2: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 4372.2-2014	139	Add to Cart	3 days	Methods for chemical analysis of zinc oxide produced by direct process -- Part 2: Determination of lead oxide content -- Flame atomic absorption spectrometry method	Valid
GB/T 4372.2-2001	199	Add to Cart	2 days	Methods for chemical analysis of zinc oxide produced by direct process -- Determination of lead oxide content -- Atomic absorption spectrometry method	Obsolete
GB/T 4372.2-1984	RFQ	ASK	3 days	Methods for chemical analysis of zinc oxide (direct process)--The phosphoric acid supporting electrolyte polarographic methods for the determination of lead oxide and cadmium oxide contents	Obsolete

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Basic data

Standard ID: GB/T 4372.2-2014 (GB/T4372.2-2014)
Description (Translated English): Methods for chemical analysis of zinc oxide produced by direct process -- Part 2: Determination of lead 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: 6,678
Date of Issue: 12/5/2014
Date of Implementation: 8/1/2015
Older Standard (superseded by this standard): GB/T 4372.2-2001
Regulation (derived from): Announcement of Newly Approved National Standards 2014 No. 27
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 method for the determination of lead oxide content of zinc oxide direct method. This section applies to the determination of the amount of lead oxide zinc oxide direct method. Measured in the range of 0.010% to 1.00%.

GB/T 4372.2-2014: Methods for chemical analysis of zinc oxide produced by direct process -- Part 2: Determination of lead 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 zinc oxide produced by direct process.Part 2. Determination of lead oxide content - Flame atomic absorption spectrometry method ICS 77.120.60 H13 National Standards of People's Republic of China Replacing GB/T 4372.2-2001 Zinc oxide direct method of chemical analysis methods Part 2. Determination of the amount of lead oxide Flame Atomic Absorption Spectrometry Part 2. Determinationofleadoxidecontent- Issued on. 2014-12-05 2015-08-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 4372 "Methods for chemical analysis of zinc oxide direct method" is divided into seven sections. --- Part 1. Determination of the amount of zinc oxide Na2EDTA titration; --- Part 2. Determination of the amount of lead oxide flame atomic absorption spectrometry; --- Part 3. Determination of the amount of copper oxide flame atomic absorption spectrometry; --- Part 4. Determination of the amount of cadmium oxide by flame atomic absorption spectrometry; --- Part 5. Determination of manganese content by flame atomic absorption spectrometry; --- Part 6. zinc inspection; --- Part 7. Determination of ferric oxide by flame atomic absorption spectrometry amount. This is Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 4372.2-2001 "direct method zinc oxide chemical analysis of atomic absorption spectrometric method for the determination of lead oxide content." Compared with GB/T 4372.2-2001, have the following main changes. --- Text format has been modified. --- Added precision and test reports. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., Hunan Nonferrous Metal Research Institute. This section is drafted. Hunan Nonferrous Metal Research Institute, Research Institute of Nonferrous Metals, Guangzhou, Guilin, China Nonferrous Metal Research Institute of Geology Minerals Co. The company, Hunan Nonferrous Geological Prospecting Institute, Hunan Nonferrous Metals Group Co., Ltd. Shuikoushan, Chenzhou City Jingui Silver Industry Co., Ltd. The main drafters of this section. Pangwen Lin, Yang Deli, Li Bing, Hou Dan Dai Fengying, Xie Hui, Lu Yu Kai, Wang Jiang Liang, Li Yan, Wei Xianghui, Fuxiao Zhen, Tang red berries, Liao Xiaohui. This part of the standard replaces the previous editions are. --- GB/T 4372.2-1984; GB/T 4372.2-2001. Zinc oxide direct method of chemical analysis methods Part 2. Determination of the amount of lead oxide Flame Atomic Absorption Spectrometry

1 Scope

GB/T 4372 provisions of this part of the determination of the amount of lead oxide zinc oxide direct method. This section applies to the determination of the amount of lead oxide zinc oxide direct method. Determination range of 0.010% to 1.00%.

2 Method summary

Sample with nitric acid dissolved in dilute nitric acid medium, using air - acetylene flame atomic absorption spectrometer measured at a wavelength of 283.3nm Lead absorbance to a standard curve method to calculate the amount of lead oxide.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. Nitrate 3.1 (ρ1.42g/mL). 3.2 nitric acid (11). 3.3 lead standard stock solution. Weigh 1.0000g metallic lead (wPb≥99.99%) in 300mL beaker, add 10mL of nitric acid (3.2), heat gently to dissolve, remove the cooled and transferred to 1000mL volumetric flask, add 90mL of nitric acid (3.2), dilute to the mark and mix. This solution 1mL containing 1.0mg lead. 3.4 Lead standard solution. Pipette 10.00mL lead standard stock solution (3.3) in 100mL flask, add 5mL nitric acid (3.2), with Dilute with water to volume, and mix. This solution 1mL containing 100μg lead.

4 Instrument

Atomic absorption spectrometer, with a lead hollow cathode lamp. Under optimum working conditions for those who can reach the following indicators can be used. Sensitivity. In line with the measurement sample solution matrix solution, characterized in lead concentration should not exceed 0.3μg/mL. Precision. standard solution measuring the absorbance of the highest concentration of 10 times, the standard deviation should not exceed the maximum concentration of the standard mean absorbance 0.5% luminosity. Linear curve. The curve is divided into five sections according to concentration, than the difference between the absorbance of the absorbance difference between the highest and the lowest segment segment, It should not be less than 0.8.

5 Sample

5.1 Sample size should be less than 0.10mm. 5.2 Sample beforehand at 100 ℃ ~ 105 ℃ after drying 2h, placed in a desiccator, cool to room temperature. ......

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