GB/T 24583.5-2019 English PDF

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GB/T 24583.5-2019: Vanadium-nitrogen - Determination of phosphorus content - Bismuth molybdenum blue spectrophotometric method
Status: Valid

GB/T 24583.5: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 24583.5-2019	199	Add to Cart	3 days	Vanadium-nitrogen - Determination of phosphorus content - Bismuth molybdenum blue spectrophotometric method	Valid
GB/T 24583.5-2009	239	Add to Cart	3 days	Vanadium -- Nitrogen alloy -- Determination of phosphorus content -- The bismuth molybdenum blue spectrophotometry method	Obsolete

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GB/T 24583.2   GB/T 24583.1   GB/T 24583.4   GB/T 24583.6   GB/T 24583.7   GB/T 24583.3   

Basic data

Standard ID: GB/T 24583.5-2019 (GB/T24583.5-2019)
Description (Translated English): Vanadium-nitrogen - Determination of phosphorus content - Bismuth molybdenum blue spectrophotometric method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H11
Classification of International Standard: 77.100
Word Count Estimation: 10,158
Date of Issue: 2019-06-04
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 24583.5-2019: Vanadium-nitrogen - Determination of phosphorus content - Bismuth molybdenum blue spectrophotometric method

---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.
Vanadium-nitrogen--Determination of phosphorus content--Bismuth molybdenum blue spectrophotometric method ICS 77.100 H11 National Standards of People's Republic of China Replace GB/T 24583.5-2009 Determination of phosphorus content in vanadium-nitrogen alloy Bismuth phosphorus molybdenum blue spectrophotometry Published on.2019-06-04 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

The analysis method of GB/T 24583 vanadium nitrogen alloy is divided into 8 parts. --- GB/T 24583.1 Determination of vanadium content of vanadium-nitrogen alloys - Ammonium sulphate titration method; --- GB/T 24583.2 Determination of nitrogen content of vanadium-nitrogen alloys - Inert gas fusion heat conduction method; --- GB/T 24583.3 Determination of nitrogen content of vanadium-nitrogen alloys - Distillation - Neutralometric titration; --- GB/T 24583.4 Determination of carbon content of vanadium-nitrogen alloys - infrared absorption method; --- GB/T 24583.5 Determination of phosphorus content of vanadium-nitrogen alloys - bismuth phosphorus molybdenum blue spectrophotometric method; --- GB/T 24583.6 Determination of sulfur content of vanadium-nitrogen alloys by infrared absorption method; --- GB/T 24583.7 Determination of oxygen content of vanadium-nitrogen alloys - infrared absorption method; --- GB/T 24583.8 Determination of silicon, manganese, phosphorus and aluminium content of vanadium-nitrogen alloys by inductively coupled plasma atomic emission spectrometry. This part is the fifth part of GB/T 24583. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part replaces GB/T 24583.5-2009 "Determination of phosphorus content of vanadium-nitrogen alloys by bismuth phosphomolybdenum blue spectrophotometry". This part and Compared with GB/T 24583.5-2009, the main technical changes are as follows. ---Modified "normative references" (see Chapter 2, Chapter 2 of the.2009 edition); --- Added "instrument" (see Chapter 5); --- Revised the method of preparation and preparation of the sample (see Chapter 6, Chapter 6 of the.2009 edition); --- Modified the drawing of the calibration curve (see 7.6, 6.5 of the.2009 edition); --- Revised the determination and representation of the analysis results (see Chapter 8, Chapter 7 of the.2009 edition); --- Replace the allowable difference with the reproducibility limit r and the reproducibility limit R of the inter-laboratory precision test data statistics (see Chapter 9, Chapter 8 of the.2009 edition). This part was proposed by the China Iron and Steel Association. This part is under the jurisdiction of the National Technical Committee for the Production of Pig Iron and Ferroalloys (SAC/TC318). This section drafted by. Pangang Group Co., Ltd., Hegang Co., Ltd. Chengde Branch, the national quality supervision and inspection of vanadium and titanium products Center, Pangang Group Vanadium and Titanium Resources Co., Ltd., Jiaocheng Yiwang Ferroalloy Co., Ltd., Qingdao Zhongkelian Laboratory Technical Service Limited company, China Metallurgical Construction Research Institute, Metallurgical Industry Information Standards Institute. The main drafters of this section. Zheng Xiaomin, Wang Xuemei, Li Lanjie, Yang Xinneng, Zhou Kaidai, Cheng Yong, Zhong Hua, Zhang Wei, Zeng Hui, Su Yang, Liu Yajian, Yang Ping, Feng Zongping, Gao Minglei, Lu Chunsheng. The previous versions of the standards replaced by this section are. ---GB/T 24583.5-2009. Determination of phosphorus content in vanadium-nitrogen alloy Bismuth phosphorus molybdenum blue spectrophotometry Cautions - Personnel using this section should have hands-on experience in formal laboratory work. This section does not point out all possible security questions. question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set by the relevant national regulations.

1 Scope

This part of GB/T 24583 specifies the determination of phosphorus in vanadium-nitrogen alloy by bismuth phosphomolybdate blue spectrophotometry. This section applies to the determination of phosphorus content in vanadium-nitrogen alloys. Measuring range (mass fraction). 0.010%~0.100%.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) Part 1. General and definition GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) Part 2. Determination of standard method of measurement Basic method of sex and reproducibility GB/T 6682 Analytical laboratory water specifications and test methods GB/T 8170 Numerical Rounding Rules and Representation and Determination of Limit Values GB/T 12806 laboratory glass instrument single standard line volumetric flask GB/T 12807 laboratory glass instrument indexing pipette GB/T 12808 laboratory glass instrument single standard line pipette GB/T 20567 vanadium nitrogen alloy

3 Principle

The sample was decomposed with nitric acid and the phosphorus was oxidized to orthophosphoric acid with potassium permanganate. Phosphorus and phosphorus in a medium of 0.8 mol/L to 1.2 mol/L 铋 and ammonium molybdate form a complex, which is reduced to ascorb blue with ascorbic acid, and its absorbance is measured at 700 nm of a spectrophotometer.

4 reagents and materials

In the analysis, unless otherwise stated, only approved analytical reagents and distilled water of Grade III and above in accordance with GB/T 6682 are used. Or deionized water or water of equivalent purity. 4.1 Nitric acid, 1 1. 4.2 Potassium permanganate solution, 20g/L. 4.3 sodium nitrite solution, 20g/L. 4.4 bismuth nitrate solution, 10g/L. 10 g of bismuth nitrate [Bi(NO3)3·5H2O] was weighed and dissolved in nitric acid (12) and diluted to 1 L. 4.5 Phosphorus coloring solution, weigh 40g of sodium potassium tartrate and 50g of ammonium molybdate [(NH4)6Mo7O24·4H2O] dissolved in water, diluted Up to 1000mL. 4.6 Ascorbic acid solution, 20g/L. Formulated when used. ......

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