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YS/T 34.2-2011 English PDF

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YS/T 34.2-2011: Method for chemical analysis of the high-purity arsenic. Predicating method for determinating the concentration of selenium
Status: Valid

YS/T 34.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 34.2-2011English159 Add to Cart 3 days [Need to translate] Method for chemical analysis of the high-purity arsenic. Predicating method for determinating the concentration of selenium Valid YS/T 34.2-2011
YS/T 34.2-1992English199 Add to Cart 2 days [Need to translate] (High-purity arsenic chemical analysis methods - Determination of cobalt, zinc, silver, copper, calcium, aluminum, nickel, chromium, lead, magnesium, iron chemical spectroscopy) Obsolete YS/T 34.2-1992

PDF similar to YS/T 34.2-2011


Standard similar to YS/T 34.2-2011

GB/T 14849.3   GB/T 14849.1   GB/T 37385   YS/T 37.1   YS/T 34.3   YS/T 34.1   

Basic data

Standard ID YS/T 34.2-2011 (YS/T34.2-2011)
Description (Translated English) Method for chemical analysis of the high-purity arsenic. Predicating method for determinating the concentration of selenium
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H17
Classification of International Standard 77.040.30
Word Count Estimation 6,675
Date of Issue 2011-12-20
Date of Implementation 2012-07-01
Older Standard (superseded by this standard) YS/T 34.3-1992
Regulation (derived from) ?MIIT Announcement 2011 No.43
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for the determination of selenium in high-purity arsenic content. This standard applies to arsenic (99. 999%) Determination of selenium content. Measuring range: ~ 0. 00015% 0. 00005%.

YS/T 34.2-2011: Method for chemical analysis of the high-purity arsenic. Predicating method for determinating the concentration of selenium


---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.
Method for chemical analysis of the high-purity arsenic.Predicating method for determinating the concentration of selenium ICS 77.040.30 H17 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 34.3-1992 Methods for chemical analysis of high-purity arsenic Polarographic Determination of selenium content Issued on. 2011-12-20 2012-07-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 34 "high-purity arsenic chemical analysis method" consists of three parts. --- Part 1. Methods for chemical analysis of high-purity arsenic by inductively coupled plasma mass spectrometry (ICP-MS) Determination of impurities in high-purity arsenic content; --- Part 2. Determination of the amount of high-purity arsenic and selenium chemical analysis of polarography; --- Part 3. Determination of the amount of high-purity arsenic and sulfur chemical analysis of polarography. This section is YS/T Part 2 34. The partial replacement of YS/T 34.3-1992 "Determination of the amount of high-purity arsenic and selenium chemical analysis of polarographic method." This section according to GB/T 1.1-2009. the preparation of "Standardization Guide Part 1 standard structure and writing" requirement. The non-ferrous metal part by the National Standardization Technical Committee. This section is responsible for drafting unit. Emei Semiconductor Material Factory. The main drafters of this section. Cheng Gaoming, Tangyun Bo. This part of the standard replaces the previous editions are. --- YS/T 34.3-1992. Methods for chemical analysis of high-purity arsenic Polarographic Determination of selenium content

1 Scope

YS/T of the provisions of section 34 of the method for the determination of arsenic in high purity selenium content. This section applies to the determination of arsenic (99.999%) content of selenium. Measurement range 0.00005% 0.00015%.

2 Method summary

Sample hydrogen peroxide dissolved arsenic solution prepared selenium, regulating As (Ⅲ) and As (Ⅴ) ratio in extremely oscilloscope spectrometer -0.7 ~ -1.2V Recording selenium peak peak current value from the working curve Richard selenium.

3 reagent standard solution

3.1 Hydrogen peroxide (30%). pure class distinctions. 3.2 trivalent arsenic solution. Weigh 0.528g trioxide, add 5mL water heating dissolved and transferred to 200mL volumetric flask, dilute to the mark Degree, and mix. 1mL solution containing 2mg trivalent arsenic. 3.3 Storage selenium standard solution. Weigh 1.000g selenium (99.999%), a 50mL beaker, add 10mL of hydrogen peroxide (3.1) in Electric graphite plate low temperature dissolution, steamed until transparent, dissolved in a little water and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. 1mL solution containing 1mg selenium. 3.4 Selenium standard solution. accurate Pipette 1.0mL selenium standard stock solution (3.3) in 1000mL volumetric flask, dilute to volume, and mix. This solution 1mL containing 1μg selenium.

4 Instrument

Oscilloscope Polarograph. scanning voltage 0V ~ 2V.

5 sample handling and assay

5.1 Sample Weigh 1.000g sample, accurate to 0.001g. 5.2 blank test Along with sample blank test. 5.3 Determination 5.3.1 The sample (5.1) in a 50mL beaker was added dropwise 8mL of hydrogen peroxide (3.1), covered with a watch glass, smooth reaction, the beaker Placed 100 ℃ ~ 120 ℃ graphite electric hotplate, after complete dissolution of the sample dish surface is removed, heated and concentrated to a transparent (arsenic inclined beaker

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