GB/T 3286.6-2014 English PDF

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GB/T 3286.6-2014: Methods for chemical analysis of limestone and dolomite -- The determination of phosphorus content
Status: Valid

GB/T 3286.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3286.6-2014	259	Add to Cart	3 days	Methods for chemical analysis of limestone and dolomite -- The determination of phosphorus content	Valid
GB/T 3286.6-1998	199	Add to Cart	2 days	Methods for chemical analysis of limestone and dolomite--The determination of phosphorus content	Obsolete
GB/T 3286.6-1982	RFQ	ASK	3 days	Chemical analysis of limestone and dolomite--The chromazurol S photometric method for determination of aluminium oxide	Obsolete

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GB/T 3286.11   GB/T 3286.9   GB/T 3286.8   GB/T 3286.12   GB/T 3286.10   GB/T 3286.7   

Basic data

Standard ID: GB/T 3286.6-2014 (GB/T3286.6-2014)
Description (Translated English): Methods for chemical analysis of limestone and dolomite -- The determination of phosphorus content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D52
Classification of International Standard: 73.080
Word Count Estimation: 11,146
Date of Implementation: 5/1/2015
Older Standard (superseded by this standard): GB/T 3286.6-1998
Quoted Standard: GB/T 2007.2; GB/T 6379.2; GB/T 6682; GB/T 8170
Regulation (derived from): People's Republic of China Announcement of Newly Approved National Standards 2014 No. 22
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 phosphorus content by phosphorus aluminum blue spectrophotometric method. This section applies to the determination of limestone, dolomite and metallurgical lime phosphorus content. Measurement range (mass frac

GB/T 3286.6-2014: Methods for chemical analysis of limestone and dolomite -- The determination of phosphorus content

---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.
Methods for chemical analysis of limestone and dolomite - The determination of phosphorus content ICS 73.080 D52 National Standards of People's Republic of China Replacing GB/T 3286.6-1998 Methods for chemical analysis of limestone and dolomite Part 6. Determination of phosphorus content Phosphorus molybdenum blue spectrophotometry Part 6. Thedeterminationofphosphoruscontent- Issued on. 2014-09-30 2015-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 3286 "Methods for chemical analysis of limestone and dolomite" is divided into nine sections. --- Part 1. calcium oxide and magnesium oxide content complexometric titration and flame atomic absorption spectrometry; --- Part 2. Determination of silica content of silicon molybdenum blue spectrophotometric method and perchloric acid dehydration gravimetric method; --- Part 3. Determination of alumina content of chromium azure S spectrophotometric and complexometric titration; --- Part 4. Determination of iron oxide content of phenanthroline spectrophotometric method and the flame atomic absorption spectrometry; --- Part 5. Determination of periodate oxidation of manganese oxide spectrophotometry; --- Part 6. Determination of phosphorus content of phosphorus molybdenum blue spectrophotometric method; --- Part 7. Determination of sulfur content tube furnace combustion - potassium iodate titration method, high-frequency combustion infrared absorption method and barium sulfate gravimetric method; --- Part 8. Determination of the weight loss on ignition; --- Part 9. Determination of carbon dioxide content of the caustic asbestos absorption gravimetric method. This section GB/T Section 63286 of. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 3286.6-1998 "limestone, dolomite Chemical analysis methods Determination of phosphorus content", and GB/T 3286.6- Compared to 1998, the main technical changes are as follows. --- The standard name be changed to "limestone and dolomite chemical analysis - Part 6. Determination of phosphorus content of phosphorus molybdenum blue spectrophotometric law"; --- Normative references canceled the reference standard reign, and adds some reference standards; --- Carried out jointly between laboratory precision test statistics obtained by the repeatability limit (r) and reproducibility limit R instead of "allowable difference"; The concentration of sodium citrate solution --- 4.8 by the 15g/L to 25g/L, sodium citrate was added in 7.5.1 by the amount of change 5mL To 3mL. This part is proposed by the China Iron and Steel Association. This part of the National Steel Standardization Technical Committee (SAC/TC183) centralized. This section is drafted. Wuhan Iron and Steel (Group) Corporation, Metallurgical Industry Information Standards Institute. The main drafters of this section. Wen east, Chen Shihua, Zhang Suizhong, Zhou Zheng, Shao Mei, Chou Jinhui, CAO Hong-yan, Guo Fang, Wang Jiang, Gao Jianping. This part of the standard replaces the previous editions are. --- GB/T 3286.8-1982, GB/T 3286.8-1988; --- GB/T 3286.6-1998. Methods for chemical analysis of limestone and dolomite Part 6. Determination of phosphorus content Phosphorus molybdenum blue spectrophotometry Warning. Use of this section shall have regular laboratory personnel working practices. This section does not indicate that all possible security issues, use Those who have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

GB/T 3286 provisions of this part of the determination of phosphorus content by phosphorus molybdenum blue spectrophotometric method. This section applies to the determination of limestone, dolomite and metallurgical lime phosphorus content. Measurement range (mass fraction). 0.001% phosphorus content ~ 0.20%.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 2007.2 bulk minerals sampling and sample preparation General manual sample preparation method GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 8170 repair value expressed about the rules and limit values and judgment Principle 3 Sample temperature burning, decomposition with hydrochloric acid, perchloric acid smoke. About 0.5mol/L HCl medium in order to hydroxylamine hydrochloride and ascorbic acid As a reducing agent, and the resulting reduction of phosphomolybdic heteropoly acid is phosphorus molybdenum blue at 825nm wavelength spectrophotometer measured absorbance.

4 Reagents

4.1 water requirements Analysis Unless otherwise stated, use only reagents of recognized analytical grade and third grade GB/T 6682 specified above or pure distilled water Considerable degree water. 4.2 hydrochloric acid Hydrochloric acid, ρ = 1.19g/mL. 4.3 perchlorate Perchloric acid, ρ = 1.67g/mL. ......

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