GB/T 23946-2009 English PDF

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GB/T 23946-2009: Inorganic chemicals for industrial use -- General method for the determination of lead content -- Atomic absorption spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23946-2009	229	Add to Cart	3 days	Inorganic chemicals for industrial use -- General method for the determination of lead content -- Atomic absorption spectrometry	Valid

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Basic data

Standard ID: GB/T 23946-2009 (GB/T23946-2009)
Description (Translated English): Inorganic chemicals for industrial use -- General method for the determination of lead content -- Atomic absorption spectrometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.060.01
Word Count Estimation: 10,161
Date of Issue: 2009-06-02
Date of Implementation: 2010-02-01
Quoted Standard: GB/T 6682-2008; HG/T 3696.2; HG/T 3696.3
Regulation (derived from): National Standard Approval Announcement 2009 No.8 (Total No.148)
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 general method of inorganic chemical products Determination of lead content-Atomic absorption spectrometry safety tips, General Provisions, graphite furnace atomic absorption spectrometry and flame atomic absorption spectrometry. This standard applies to graphite furnace atomic absorption spectrometry and flame atomic inorganic chemical products lead content absorption spectrometry. The minimum detectable concentration of the standard graphite furnace atomic absorption spectrometry was 5��g/L. The minimum detectable concentration by flame atomic absorption spectrometry was 0. 1 mg/L.

GB/T 23946-2009: Inorganic chemicals for industrial use -- General method for the determination of lead content -- Atomic absorption spectrometry

---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.
Inorganic chemicals for industrial use.General method for the determination of lead content ICS 71.060.01 G10 National Standards of People's Republic of China General method for determination of lead in inorganic chemical products Atomic Absorption Spectrometry 2009-06-02 release 2010-02-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of the People 's Republic of China China National Standardization Management Committee released

Foreword

Appendix A and Appendix B of this standard are informative. This standard is proposed by the China Petroleum and Chemical Industry Association. This standard is under the jurisdiction of the National Chemical Standardization Technical Committee inorganic chemical branch (SAC/TC63/SC1). The main drafting of this standard. Fluoride Chemical Co., Ltd., CNOOC Tianjin Chemical Research and Design Institute. The main drafters of this standard. Xue Xujin, Guo Fengxin, An Xiaoying, Wang Hongxing. This standard is the first release. General method for determination of lead in inorganic chemical products Atomic Absorption Spectrometry

1 Scope

This standard specifies the general method of determination of lead in inorganic chemical products - the safety tips of atomic absorption spectrometry, generally stipulated, Graphite Furnace Atomic Absorption Spectrometry and Flame Atomic Absorption Spectrometry. This standard is applicable to the determination of lead in inorganic chemical products by graphite furnace atomic absorption spectrometry and flame atomic absorption spectrometry. This standard The minimum detection concentration of graphite furnace atomic absorption spectrometry is 5μg/L, and the lowest detection concentration of flame atomic absorption spectrometry is 0.1mg/L.

2 normative reference documents

The terms of the following documents are hereby incorporated by reference into this standard. Whichever is the date of the reference file, which is followed by all (Excluding corrigenda) or revisions do not apply to this standard, however, encourage the parties to reach an agreement under this standard Whether you can use the latest version of these files. For undated references, the latest edition applies to this standard. GB/T 6682-2008 Analytical laboratory water specifications and test methods (ISO 3696..2008, MOD) Preparation of Impurity Standard Solution for Chemical Analysis of Inorganic Chemical Products HG/T 3696.2 HG/T 3696.3 Preparation of chemical and analytical preparations for inorganic chemical products

3 safety tips

Some of the reagents used in this test method are toxic or corrosive and the operator should be careful! Such as splashing on the skin should be immediately water Rinse, severe should be treated immediately.

4 General provisions

The reagents and water used in this standard, when not specified in other requirements, refer to the analysis of pure reagents and GB/T 6682-2008 of the provisions of the two Water level. The standard impurity standard solutions, preparations and articles required for the test shall be in accordance with HG/T 3696.2, HG/T 3696.3 when no other requirements are specified The provisions of the preparation.

5 Graphite Furnace Atomic Absorption Spectrometry

5.1 Principles The treated test solution is poured into a graphite furnace, and the lead compound is dissociated into a ground state vapor at a high temperature in the atomization stage and The characteristic lines of the cathode cathode lamp emit selective absorption. The absorbance of lead in the test solution was measured under the optimum optimum conditions of selection. In a The concentration range, the absorbance value is proportional to the lead content, and the lead content in the sample is obtained by means of a known standard series. 5.2 Reagents 5.2.1 Nitric acid solution. 1 + 5. 5.2.2 Ammonium dihydrogen phosphate solution. 20g/L. 5.2.3 lead standard solution Ⅰ. 1mL solution containing lead (Pb) 0.1mg. 10 mL of the lead standard solution prepared according to HG/T 3696.2 was placed in a 100 mL volumetric flask and diluted with water Degree, shake well. Placed in the refrigerator to save, valid for a month. ......

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