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GB/T 23845-2009 English PDF

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GB/T 23845-2009: Inorganic chemicals for industrial use -- General method for the determination of bromide
Status: Valid
Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 23845-2009189 Add to Cart 3 days Inorganic chemicals for industrial use -- General method for the determination of bromide Valid

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Basic data

Standard ID: GB/T 23845-2009 (GB/T23845-2009)
Description (Translated English): Inorganic chemicals for industrial use -- General method for the determination of bromide
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.060.01
Word Count Estimation: 8,887
Date of Issue: 2009-05-18
Date of Implementation: 2010-02-01
Quoted Standard: 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 determination of inorganic chemical products bromide general method approach feeds, analysis steps and calculations. This standard applies to the determination of trace amounts of inorganic chemical products bromide. Detection range of 1��g/mL ~ 4��g/mL (to Br- meter).

GB/T 23845-2009: Inorganic chemicals for industrial use -- General method for the determination of bromide


---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 bromide ICS 71.060.01 G10 National Standards of People's Republic of China Inorganic chemical products General method for determination of bromide 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

The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized. This standard is mainly drafted by. Fluoride Chemicals Co., Ltd., CNOOC Tianjin Chemical Research & Design Institute. The main drafters of this standard. Wang Jianping, Shi Xiuhua, Gao Peng. This standard is the first release. Inorganic chemical products General method for determination of bromide

1 Scope

This standard specifies the determination of inorganic chemicals bromide general method of Method summary, analysis procedures and results of calculations. This standard applies to the determination of trace amounts of inorganic chemical products bromide. Detection range of 1μg/mL ~ 4μg/mL (in Br -meter).

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. 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 Method summary

In acidic medium, the chloramine-T oxidation of bromide to free bromine, bromine then reacts with phenol red tetrabromo phenol red, the color with the bromide Content increases yellowish green to purple. Within a certain range of concentration, absorbance proportional to the amount of bromide.

4 Safety Tips

Reagents used in this test method are toxic or corrosive, be careful when operating! Such as water splashed on the skin should immediately Flushing, 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. Impurity standard solution, test preparation and products required, did not indicate when the other requirements, according to HG/T 3696.2, HG/T 3696.3 regulations of preparation.

6 Reagents

6.1 acetic acid - sodium acetate buffer solution. pH = 4 ~ 5. 6.2 phenol red solution. 0.24g/L; Preparation. Weigh 0.024g of phenol red and 0.12g of sodium carbonate, dissolved in water and diluted to 100mL. 6.3 chloramine T solution. 2g/L; Preparation. Weigh 0.20g chloramine-T [p-toluenesulfonyl sodium chloramine] dissolved in water and diluted to 100mL. Stored in a brown bottle, cold protection Deposit. Save a period not exceeding one week. 6.4 thiosulfate solution. 25g/L. 6.5 bromide standard solution Ⅰ. 1mL solution containing bromine (Br) 0.010mg, Extemporaneous; Preparation. Pipette Pipette 1.00mL bromide standard solution according to HG/T 3696.2 formulated into 100mL volumetric flask, add
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