GB/T 14427-2017 English PDF

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GB/T 14427-2017: Analysis of water used in boiler and cooling system -- Determination of iron
Status: Valid

GB/T 14427: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 14427-2017	219	Add to Cart	3 days	Analysis of water used in boiler and cooling system -- Determination of iron	Valid
GB/T 14427-2008	279	Add to Cart	3 days	Analysis of water used in boiler and cooling system -- Determination of iron	Obsolete
GB/T 14427-1993	239	Add to Cart	2 days	Analysis of water used in boiler and cooling system. Determination of iron	Obsolete

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Basic data

Standard ID: GB/T 14427-2017 (GB/T14427-2017)
Description (Translated English): Analysis of water used in boiler and cooling system -- Determination of iron
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G76
Word Count Estimation: 11,128
Date of Issue: 2017-09-07
Date of Implementation: 2018-04-01
Older Standard (superseded by this standard): GB/T 14427-2008
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 14427-2017: Analysis of water used in boiler and cooling system -- Determination of iron

---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.
Analysis of water used in boiler and cooling system - Determination of iron ICS 13.060.50; 71.040.40 G76 National Standards of People's Republic of China Replacing GB/T 14427-2008 Analytical methods for boiler water and cooling water - Determination of iron (ISO 6332.1988, Waterquality-Determination ofiron- Spectrometricmethodusing1,10-phenanthroline, NEQ) 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 14427-2008 "Determination of iron in boiler water and cooling water," and GB/T 14427-2008 Compared with the main technical changes are as follows. --- Modify 1,10-phenanthroline spectrophotometric analysis steps (see 5.5,.2008 edition Chapter 7); --- Added 4,7-diphenyl-1,10-phenanthroline spectrophotometry (see Chapter 6); --- Increased flame atomic absorption spectrometry (see Chapter 7); --- Increased graphite furnace atomic absorption spectrometry (see Chapter 8); --- Added test report (see Chapter 9). This standard uses redrafted law reference ISO 6332.1988 "Determination of iron in water 1,10-phenanthroline spectrophotometry" preparation, and ISO 6332.1988 is not equivalent to the degree of consistency. 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. Henan Qingshuiyuan Science and Technology Co., Ltd., Ningbo Special Equipment Inspection Institute, Guangzhou Special Pressure Equipment Testing Institute, Jiangsu Province, Changzhou Branch of Special Equipment Safety Supervision and Inspection Institute, CNOOC Tianjin Chemical Research and Design Institute Co., Ltd. Division, Xiamen High Poole Automation Equipment Co., Ltd., Chongqing University, Jiashan green environmental materials plant, Nanjing University Yixing Environmental Protection Research Institute, Tianjin Is up to technology limited liability company. The main drafters of this standard. Yang Haixing, Zhou Ying, Chen Zhigang, Hu Yuexin, Wang Yan, Wang Zhiwei, Zheng Huai Li, Yu Minghua, Ren Hongqiang, Marina, Li Lin. This standard replaces the standards previously issued as. --- GB/T 14427-1993, GB/T 14427-2008. Analytical methods for boiler water and cooling water - Determination of iron

1 Scope

This standard specifies the boiler water and industrial circulating cooling water total iron, soluble total iron and soluble iron (Ⅱ) determination. This standard applies to the boiler water and cooling water determination of iron, which 1,10-phenanthroline spectrophotometry for 0.01mg/L ~ 5mg/L iron determination, the iron content higher than 5mg/L when the sample can be properly diluted before the determination; 4,7-diphenyl-1,10 phenanthroline Spectrophotometry for the determination of iron content of 10μg/L ~.200μg/L; flame atomic absorption spectrometry for 0.1mg/L ~ 5mg/L of iron determination, the iron content higher than 5mg/L samples can be properly diluted before the determination; Graphite Furnace Atomic Absorption Spectrometry For 1μg/L ~ 100μg/L of iron determination. This standard 1,10-phenanthroline spectrophotometry and flame atomic absorption spectrometry is also suitable for surface water, groundwater and chemical, metallurgy, Light industry, machinery and other industrial wastewater determination of iron.

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 602 chemical reagent impurity standard solution preparation GB/T 603 chemical reagent test methods used in the preparation of preparations and products GB/T 4470 flame emission, atomic absorption and atomic fluorescence spectrometry terms GB/T 6682 analytical laboratory water specifications and test methods Methods for the analysis of water for boiler and cooling water - Method for the collection of water samples

3 Terms and definitions

GB/T 4470 defined terms and definitions apply to this document.

4 rules

Caution --- The strong acids used in this standard are corrosive, and should be avoided when inhaled or in contact with the skin. Splashed body immediately with large Flush with 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 impurities in the standard solution, preparations and products, did not indicate when the other requirements, according to GB/T 602, GB/T 603 of the rules Prepared. 5 1,10-phenanthroline spectrophotometry 5.1 principle The iron (Ⅱ) phenanthroline complex is stable at pH 2.5 ~ 9.0, and the color intensity is proportional to the iron (Ⅱ) content. In the iron containing When the amount is less than 5.0mg/L, there is a linear relationship between iron (Ⅱ) concentration and absorbance. The maximum absorbance at 510nm wavelength. ......

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