GB/T 23834.5-2009 English PDF

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GB/T 23834.5-2009: Chemical analysis method for stannous sulfate -- Part 5: Determination of arsenic content -- Silver diethyldithiocarbamate spectrophotometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23834.5-2009	189	Add to Cart	3 days	Chemical analysis method for stannous sulfate -- Part 5: Determination of arsenic content -- Silver diethyldithiocarbamate spectrophotometry	Valid

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Basic data

Standard ID: GB/T 23834.5-2009 (GB/T23834.5-2009)
Description (Translated English): Chemical analysis method for stannous sulfate -- Part 5: Determination of arsenic content -- Silver diethyldithiocarbamate spectrophotometry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.060.01
Word Count Estimation: 8,838
Date of Issue: 2009-05-18
Date of Implementation: 2010-02-01
Quoted Standard: GB/T 602; GB/T 603; GB/T 6682-2008; HG/T 3696.2; HG/T 3696.3
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
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 diethyl dithiocarbamate silver spectrophotometric determination of arsenic in principle stannous sulfate content, safety tips, General Provisions, analysis step, calculated results. This section applies to the determination of arsenic content of stannous sulfate. Measuring range: 0. 001% to 0. 050 %.

GB/T 23834.5-2009: Chemical analysis method for stannous sulfate -- Part 5: Determination of arsenic content -- Silver diethyldithiocarbamate spectrophotometry

---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.
Chemical analysis method for stannous sulfate Part 5. Determination of arsenic content Silver diethyldithiocarbamate spectrophotometry ICS 71.060.01 G10 National Standards of People's Republic of China Sulfite chemical analysis of tin Part 5. Determination of arsenic content Diethyl dithiocarbamate spectrophotometry silver Posted 2009-05-18 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 23834-2009 "sulfite chemical analysis of tin" is divided into six parts. --- Part 1. Determination of tin sulfate dichromate method --- Part 2. hydrochloric acid insoluble matter - Gravimetric method --- Part 3. alkaline earth metals and the total amount of sulfate - Gravimetric method --- Part 4. lead, copper content - Flame Atomic Absorption Spectrometry --- Part 5. Determination of arsenic content diethyl dithiocarbamate spectrophotometry silver --- Part 6. Determination of iron content  phenanthroline spectrophotometry method This section GB/T 23834 Part 5. This part is proposed by the China Petroleum and Chemical Industry Association. This part of the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized. This section is responsible for drafting unit. Liuzhou China Tin Group Co., Ltd., Yunnan Tin Group Co., Ltd., Fine Chemicals Group Ltd., CNOOC Tianjin Chemical Research & Design Institute. The main drafters of this section. Lin cream, Yesu Juan, Xie Hui-fang, WANG Zhou Hui, Liu Ruo, Guofeng Xin. This section first release. Sulfite chemical analysis of tin Part 5. Determination of arsenic content Diethyl dithiocarbamate spectrophotometry silver

1 Scope

This section defines the principle of the method diethyl dithiocarbamate spectrophotometric determination of silver and tin sulfate arsenic content, safety tips, General rule, the analysis step, the results of calculations. This section applies to the determination of arsenic content stannous sulfate. Measurement range. 0.001% to 0.050%.

2 Normative references

The following documents contain provisions which, through reference GB/T 23834 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. Preparation of standard solution of GB/T 602 chemical reagent determination of impurities (GB/T 602-2002, ISO 6353-1. 1982, NEQ) GB/T 603 chemical reagent test methods in the formulation and preparation of products (GB/T 603-2002, ISO 6353-1 with. 1982, NEQ) GB/T 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) Preparation of HG/T 3696.2 inorganic chemical products, chemical analysis of impurity standard solution Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis

3 PRINCIPLE OF THE METHOD

In acidic medium, with stannous chloride reduction of arsenic, while new eco-hydrogen reaction of zinc with hydrochloric acid and the formation of hydrogen arsenide, lead Into diethyl dithiocarbamate silver [Ag (DDTC)] absorbent solution to form a yellow or red brown silver sol, the color depth and containing arsenic Proportional to the amount, in line with Lambert - Beer law, the absorbance was measured with a spectrophotometer to obtain the arsenic content in tin sulfate through the curve.

4 Safety Tips

Reagents used in this test method are toxic or corrosive, be careful when operating! As splashed on the skin or eyes should stand That is rinsed with water, severe cases should be treated immediately.

5 General Provisions

This standard reagents and water, did not indicate when the other requirements, refer to analytically pure reagents and GB/T 6682-2008 stipulated three Grade water. Impurities used in the test standard solution, preparations and products, did not indicate when the other requirements, according to GB/T 602, GB/T 603 or HG/T 3696.2, the provisions of HG/T 3696.3 of preparation.

6 Reagents and materials

6.1 arsenic-free zinc particles. particle size 3.0mm ± 0.2mm; ......

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