GB/T 3253.6-2008 English PDF

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GB/T 3253.6-2008: Methods for chemical analysis of antimony and antimony trioxide -- Determination of selenium content -- Atomic fluorescence spectrometer method
Status: Valid

GB/T 3253.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 3253.6-2008	139	Add to Cart	3 days	Methods for chemical analysis of antimony and antimony trioxide -- Determination of selenium content -- Atomic fluorescence spectrometer method	Valid
GB/T 3253.6-2001	199	Add to Cart	2 days	The determination of the amount of bismuth antimony chemical analysis method	Obsolete
GB/T 3253.6-1982	RFQ	ASK	3 days	Chemical analysis of antimony--The combustion-iodine volumetric method for determination of sulfur	Obsolete

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Basic data

Standard ID: GB/T 3253.6-2008 (GB/T3253.6-2008)
Description (Translated English): Methods for chemical analysis of antimony and antimony trioxide -- Determination of selenium content -- Atomic fluorescence spectrometer method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.99
Word Count Estimation: 6,624
Date of Issue: 2008-03-31
Date of Implementation: 2008-09-01
Older Standard (superseded by this standard): GB/T 3253.5-2001; GB/T 3254.6-1998
Regulation (derived from): National Standard Approval Announcement 2008 No.5 (Total No.118)
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 antimony trioxide, antimony and selenium in volume. This section applies to the amount of antimony and antimony trioxide in the determination of selenium. Measurement range: 0. 0003% to 0. 050%.

GB/T 3253.6-2008: Methods for chemical analysis of antimony and antimony trioxide -- Determination of selenium content -- Atomic fluorescence spectrometer 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.
Methods for chemical analysis of antimony and antimony trioxide. Determination of selenium content. Atomic fluorescence spectrometer method ICS 77.120.99 H13 National Standards of People's Republic of China Replacing GB/T 3253.5-2001, GB/T 3254.6-1998 Methods for chemical analysis of antimony and antimony trioxide Selenium content - Atomic Fluorescence Spectrometry Posted 2008-03-31 2008-09-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 3253 "Methods for chemical analysis of antimony and antimony trioxide," a total of 11 parts. --- GB/T 3253.1 chemical analysis of antimony trioxide and arsenic content of molybdenum blue spectrophotometric determination of arsenic --- GB /antimony trioxide and chemical analysis of iron content measured T 3253.2 phenanthroline spectrophotometry --- GB/T 3253.3 antimony trioxide and chemical analysis of lead content - Flame Atomic Absorption Spectrometry --- Determination of GB/T 3253.4 antimony trioxide and sulfur content of chemical analysis methods --- GB/T 3253.5 antimony trioxide and chemical analysis of copper content - Flame Atomic Absorption Spectrometry --- GB/T 3253.6 and antimony trioxide of selenium content - Atomic Fluorescence Spectrometry --- GB T 3253.7 antimony trioxide and chemical analysis methods Determination of bismuth content / --- Determination of GB/T 3253.8 antimony trioxide and antimony trioxide amount of chemical analysis methods --- Determination of GB/T 3253.9 antimony trioxide and chemical analysis of cadmium content --- Determination of GB/T 3253.10 antimony trioxide and chemical analysis of mercury content Determination --- GB/T 3253.11 antimony trioxide and analysis of lead, copper, bismuth, cadmium, iron, selenium, chromium, arsenic, mercury, tin content Part is divided into 6 sections. This Part replaces GB/T 3253.5-2001 "chemical analysis of antimony - Determination of the amount of selenium", GB/T 3254.6-1998 "trioxide Chemical analysis of antimony - Determination of the amount of selenium. " Compared with GB/T 3253.5-2001, GB/T 3254.6-1998, section like this Under changes. --- 3,3'-diaminobenzidine spectrophotometry to atomic fluorescence spectrometry; --- Detection limit was extended; --- Increasing the precision and quality assurance and control provisions. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This part of tin mining Twinkling Star Antimony Industry Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting. This section was drafted by the tin mining flash-antimony industry limited liability company. This in part by the Beijing General Research Institute of Mining and Metallurgy, Hunan SAIEC IQ participate in the drafting. The main drafters of this section. Wu Donghua, Song should ball, Mao Xiaohong. This part certifier. Yuan Yuxia, Chenxin Huan, Yang Wanbiao. This part of the standard replaces the previous editions are. --- GB/T 3253.7-1982, GB/T 3253.5-2001; --- GB/T 3254.6-1998. Methods for chemical analysis of antimony and antimony trioxide Selenium content - Atomic Fluorescence Spectrometry

1 Scope

This section provides antimony trioxide and determination of selenium content. This section applies to the determination of selenium content of antimony and antimony trioxide in. Measurement range. 0.0003% to 0.050%.

2 principle of the method

Sample was dissolved in aqua regia, plus masking matrix of antimony tartrate, the hydride generator, tetravalent selenium is reduced to potassium borohydride as hydride by argon Gas into the quartz furnace atomizer, the fluorescence intensity was measured selenium at the atomic fluorescence spectrometer.

3 Reagents and materials

3.1 commercially available reagents 3.1.1 potassium borohydride. 3.1.2 hydrochloric acid (ρ1.19g/mL). 3.1.3 nitrate (ρ1.42g/mL). 3.2 solution 3.2.1 aqua regia (when used with now). 3.2.2 hydrochloric acid solution (1 + 1). 3.2.3 Sodium hydroxide solution (100g/L, formulated with excellent pure sodium hydroxide). 3.2.4 solution of potassium borohydride (15g/L) Weigh 7.50g potassium borohydride (3.1.1), add 25mL of sodium hydroxide solution (3.2.3), dissolve completely, add water to 500mL, with When existing service. 3.2.5 tartaric acid solution (200g/L, formulated with excellent pure tartaric acid). 3.3 standard solution 3.3.1 selenium standard stock solution (100μg/mL) Weigh 0.1000g selenium (≥99.99%) in 100mL beaker, was added 5mL of nitric acid (3.1.3), and dissolved by heating on a boiling water bath for evaporation Dry, cooled, dissolved in water and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 100μg selenium. 3.3.2 selenium standard solution (1μg/mL) Pipette 10.00mL selenium standard stock solution (3.3.1) in 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 1μg selenium. 3.3.3 selenium standard solution (0.1μg/mL) Pipette 1.00mL selenium standard solution (3.3.2) in 100mL volumetric flask, dilute with water to volume, and mix. This solution containing 1mL 0.1μg selenium. 3.4 Material Argon (≥99.99%). shielding gas and carrier gas. ......

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