YS/T 521.3-2009 English PDF

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YS/T 521.3-2009: Methods for chemical analysis of blister copper. Part 3: Determination of arsenic content. Hydride generation-atomic fluorescence spectrometric method. Potassium bromate titration
Status: Valid

YS/T 521.3: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 521.3-2009	189	Add to Cart	3 days	Methods for chemical analysis of blister copper. Part 3: Determination of arsenic content. Hydride generation-atomic fluorescence spectrometric method. Potassium bromate titration	Valid
YS/T 521.3-2006	199	Add to Cart	2 days	Methods for chemical analysis of blister copper -- Determination of gold and silver contents	Obsolete

Similar standards

GB/T 3884.2   GB/T 3884.1   YS/T 521.2   YS/T 521.4   YS/T 521.1   

Basic data

Standard ID: YS/T 521.3-2009 (YS/T521.3-2009)
Description (Translated English): Methods for chemical analysis of blister copper. Part 3: Determination of arsenic content. Hydride generation-atomic fluorescence spectrometric method. Potassium bromate titration
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.30
Word Count Estimation: 7,755
Date of Issue: 2009-12-04
Date of Implementation: 2010-06-01
Older Standard (superseded by this standard): YS/T 521.2-2006
Regulation (derived from): MIIT [2009] No. 66
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies: blister copper arsenic content determination. Arsenic content of the standard method applied to blister copper measurement, measuring range: Arsenic mass fraction of 0. 02% to 0. 15 %.

YS/T 521.3-2009: Methods for chemical analysis of blister copper. Part 3: Determination of arsenic content. Hydride generation-atomic fluorescence spectrometric method. Potassium bromate titration

---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 blister copper.Part 3. Determination of arsenic content.Hydride generation-atomic fluorescence spectrometric method.Potassium bromate titration ICS 77.120.30 H13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 521.2-2006 Methods for chemical analysis of blister copper Part 3. Determination of arsenic content Method 1 Hydride Generation - Atomic Fluorescence Spectrometry Method 2 potassium bromate titration Posted 2009-12-04 2010-06-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 521-2009 "blister chemical analysis method" is divided into six sections. --- Part 1. Determination of copper content Iodometry --- Part 2. Determination of the amount of gold and silver fire assay --- Part 3. Determination of arsenic content Method 1 Hydride Generation - Atomic Fluorescence Spectrometry Method 2 potassium bromate titration --- Part 4. lead, bismuth, antimony content - Flame Atomic Absorption Spectrometry --- Part 5. Determination of zinc and nickel content by flame atomic absorption spectrometry --- Part 6. Inductively coupled plasma atomic arsenic, lead, bismuth, antimony, zinc and nickel emission spectrometry This section YS/T 521 Part 3. "Methods for chemical analysis of blister copper - Determination of arsenic content" in this section instead of YS/T 521.2-2006 (formerly GB/T 5120.2-1995). Compared with YS/T 521.2-2006, this part of the following changes. --- Text format has been modified; --- Complements the precision and quality assurance and control provisions. This section proposed and managed by China Nonferrous Metals Standardization Technical Committee. This section is responsible for drafting unit. Daye Nonferrous Metals Company. Participated in the drafting of this section. Yunnan Copper Company Limited. The main drafters of this section. Hujun Kai, Yuangong Qi, Ho Mei Shi Xiaoying, Liu Yan, Tang Juan, Chan Yu Bin. This part of the standard replaces the previous editions are. --- GB 5120.3-1985, GB/T 5120.2-1995; --- YS/T 521.2-2006. Methods for chemical analysis of blister copper Part 3. Determination of arsenic content Method 1 Hydride Generation - Atomic Fluorescence Spectrometry

1 Scope

YS/T 521 of the present method provides for determination of arsenic content in the blister copper. This method is suitable for the determination of arsenic content of blister copper, measuring range. mass fraction of arsenic 0.02% to 0.15%.

2 Method summary

Sample dissolved in dilute nitric acid. In the medium of hydrochloric acid, thiourea - ascorbic acid pre-reduction in the hydride generator, atomic fluorescence Spectrometer to measure the fluorescence intensity, the standard curve method to calculate the mass fraction of arsenic.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or equivalent purity. 3.1 hydrochloride (ρ1.19g/mL). Nitrate 3.2 (ρ1.42g/mL). 3.3 nitric acid (1 + 1). 3.4 thiourea - ascorbic acid mixture. Weigh thiourea, ascorbic acid each 5.0g, dissolved in water in order to dilute to 100mL, and mix. 3.5 solution of potassium borohydride (10g/L). Weigh 5.0g of potassium borohydride, dissolved in sodium hydroxide solution (2g/L) and treated with the sodium hydroxide solution It was diluted to 500mL, and mix. The time is now equipped with. 3.6 arsenic standard stock solution. Weigh 0.1320g benchmark arsenic trioxide (previously at 100 ℃ ~ 105 ℃ baking 1h, cooled to desiccator Room temperature) in 100mL beaker, add 5mL sodium hydroxide solution (200g/L), low-temperature heating to dissolve, adding 5mL of water, 2 drops of phenolphthalein Ethanol solution (1g/L), with sulfuric acid (1 + 1) and to the red and then just disappear excess 2mL, moved into 1000mL volumetric flask, diluted with water To the mark, and mix. This solution 1mL containing 100μg arsenic. 3.7 arsenic standard solution. Pipette 20.00mL arsenic standard stock solution in 500mL volumetric flask, dilute with water to volume, and mix. This solution 1mL solution containing 4μg arsenic. 3.8 Argon (mass fraction ≥99.99%).

4 Instrument

Atomic fluorescence spectrometer, with shielded quartz furnace atomizer, glassy arsenic hydride generator and special hollow cathode lamp or high-intensity air Heart cathode lamps. Under optimum working conditions for those who can reach the following indicators can be used. Detection limit. greater than 9 × 10-10g/mL. Precision. with 0.1μg/mL solution of arsenic standard fluorescence intensity was measured 10 times, and the standard deviation should not exceed 5.0% of the mean fluorescence intensity. Step 5 Analysis 5.1 Sample Sieved mass ratio collectively 0.25g sample, accurate to 0.0001g. ......

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