GB/T 6911-2017 English PDF

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GB/T 6911-2017: Determination of sulfate in water for industrial circulating cooling system and boiler
Status: Valid

GB/T 6911: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6911-2017	199	Add to Cart	3 days	Determination of sulfate in water for industrial circulating cooling system and boiler	Valid
GB/T 6911-2007	319	Add to Cart	3 days	Water for industrial circulating cooling system and boiler -- Determination of sulfate	Obsolete
GB/T 6911.1-1986	199	Add to Cart	2 days	Methods for analysis of water for boiler and for cooling--The determination of sulfate--Gravimetric method	Obsolete

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Basic data

Standard ID: GB/T 6911-2017 (GB/T6911-2017)
Description (Translated English): Determination of sulfate in water for industrial circulating cooling system and boiler
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Classification of International Standard: 13.060.50; 71.040.40
Word Count Estimation: 10,114
Date of Issue: 2017-09-07
Date of Implementation: 2018-04-01
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

GB/T 6911-2017: Determination of sulfate in water for industrial circulating cooling system and boiler

---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.
Determination of sulfate in water for industrial circulating cooling system and boiler ICS 13.060.50; 71.040.40 G76 National Standards of People's Republic of China Replacing GB/T 6911-2007 Industrial circulating cooling water and boiler water Determination of sulfate 2017-09-07 Posted 2018-04-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 6911-2007 "Determination of industrial circulating cooling water and boiler water sulfate, and GB/T 6911- 2007 compared to the main technical changes are as follows. --- Increasing spectrophotometry (see Chapter 5); --- Lead perchlorate potentiometric titration to barium chloride potentiometric titration (see Chapter 6,.2007 Edition 3.2); --- Added test report (see Chapter 7). This standard proposed by the China Petroleum and Chemical Industry Federation. This standard by the National Standardization Technical Committee water treatment chemicals Technical Committee (SAC/TC63/SC5) centralized. This standard is drafted by. Jiashan Green Environmental Protection Materials Factory, Henan Qingshuiyuan Science and Technology Co., Ltd., Guangzhou Special Pressure Equipment Inspection Research Institute, Jiangsu Province, Changzhou Branch of Special Equipment Safety Supervision and Inspection Institute, CNOOC Tianjin Chemical Research and Design Institute Co., Ltd., Xiamen High Poole Automation Equipment Co., Ltd., Nanjing University Yixing Environmental Protection Institute, Tianjin is up to science and technology limited liability company. The main drafters of this standard. Yu Minghua, Li Cui E, Du Yuhui, Wu Xunzhen, Bai Ying, Wang Zhiwei, Ren Hongqiang, Zhou Asia Island, Wang Yan. This standard replaces the standard version released as. --- GB/T 6911.1-1986; --- GB/T 6911.3-1986; --- GB/T 6911-2007; --- GB/T 15893.3-1995. Industrial circulating cooling water and boiler water Determination of sulfate

1 Scope

This standard specifies the industrial circulating cooling water and boiler water sulfate determination. This standard gravimetric method for sulfate content (SO42- meter) is not less than 10mg/L determination does not apply to the use of barium salt scale Dispersant industrial circulating cooling water determination of sulfate; spectrophotometry for sulfate content (SO42- dollars) of 5mg/L ~ 200mg/L determination; potentiometric titration for sulfate (SO42-) content of 5mg/L ~ 1000mg/L of the determination.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 601 chemical reagent standard titration solution preparation GB/T 603 chemical reagent test methods used in the preparation of preparations and products GB/T 6682 analytical laboratory water specifications and test methods

3 rules

Caution --- The strong acids and bases used in this standard are corrosive and should not be inhaled or come into contact with skin during use. Splashed on the body should be immediately Flush with plenty of water, serious illness should seek medical treatment immediately. Reagents and water used in this standard, unless otherwise specified, analytical reagents should be used and in line with the provisions of GB/T 6682 Level 3 water. Test required standard titration solution, preparation and products, did not indicate when the other requirements, according to GB/T 601, GB/T 603 of the rules Prepared.

4 weight method

4.1 principle Sulfate and barium chloride react under acidic conditions to produce barium sulfate precipitate, filtered and dried and weighed, and the sulfur content is determined based on the mass of barium sulfate Acid salt content. 4.2 Reagents or materials 4.2.1 hydrochloric acid solution .1 1. 4.2.2 barium chloride (BaCl2 · 2H2O) solution .100g/L. 4.2.3 silver nitrate solution .17 g/L. 4.2.4 methyl orange indicator solution .1g/L. 4.3 equipment 4.3.1 oven temperature. ......

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