YS/T 227.4-2010 English PDF

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YS/T 227.4-2010: Methods for chemical analysis of tellurium. Part 4: Determination of iron content. Phenanthroline spectrophotometry

YS/T 227.4: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 227.4-2010	209	Add to Cart	3 days	Methods for chemical analysis of tellurium. Part 4: Determination of iron content. Phenanthroline spectrophotometry
YS/T 227.4-1994	199	Add to Cart	2 days	Determination of iron content in tellurium. 1, 10-phenanthroline photometric method	Obsolete

Similar standards

GB/T 3884.2   GB/T 3884.1   YS/T 252.1   YS/T 227.12   YS/T 227.1   YS/T 227.10   

Basic data

Standard ID: YS/T 227.4-2010 (YS/T227.4-2010)
Description (Translated English): Methods for chemical analysis of tellurium. Part 4: Determination of iron content. Phenanthroline spectrophotometry
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.99
Word Count Estimation: 6,651
Date of Issue: 2010-11-22
Date of Implementation: 2011-03-01
Older Standard (superseded by this standard): YS/T 227.4-1994
Regulation (derived from): MIIT (2010) No. 126
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the tellurium Determination of iron content. This standard applies to the determination of tellurium in iron content. Measuring range: 0. 0005% to 0. 006%

YS/T 227.4-2010: Methods for chemical analysis of tellurium. Part 4: Determination of iron content. Phenanthroline spectrophotometry

---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 tellurium.Part 4. Determination of iron content.Phenanthroline spectrophotometry ICS 77.120.99 H13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 227.4-1994 Methods for chemical analysis of tellurium Part 4. Determination of iron content Phenanthroline spectrophotometry Part 4. Determinationofironcontent- Issued on. 2010-11-22 2011-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 227 "tellurium chemical analysis methods," a total of 12 parts. --- Part 1. Determination of bismuth content hydride generation - atomic fluorescence spectrometry; --- Part 2. Determination of aluminum content Chromazurol S- bromo cylpyridinium micellar solubilization spectrophotometry; --- Part 3. Determination of lead content by flame atomic absorption spectrometry; --- Part 4. Determination of iron content - Phenanthroline spectrophotometric method; --- Part 5. determination of selenium content of 2,3-diaminonaphthalene spectrophotometry; --- Part 6. Determination of copper content of solid-liquid separation - flame atomic absorption spectrometry; --- Part 7. Determination of sulfur content by inductively coupled plasma atomic emission spectrometry; --- Part 8. magnesium, sodium content - Flame atomic absorption spectrometry; --- Part 9. Determination of tellurium content of potassium dichromate - ammonium ferrous sulfate volumetric method; --- Part 10. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry; --- Part 11. Determination of silicon content of n-butanol silicon molybdenum blue spectrophotometric method; --- Part 12. bismuth, aluminum, lead, iron, selenium, copper, magnesium, sodium, arsenic content - Inductively coupled plasma atomic emission spectrometry. This is Part 4. This section drafted in accordance with GB/T 1.1-2009 given rules. The partial replacement of YS/T 227.4-1994 "Tellurium Determination of iron content (phenanthroline photometric method)." And YS/T 227.4-1994 Compared to the main part of the following changes. --- Complements the precision, quality assurance and control provisions; --- Complements the "test report" requirement. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. Zhuzhou Smelter Group Co., Ltd. This section is drafted. Sichuan Apollo Solar Energy Technology Co., Ltd. It participated in the drafting of this section. MCC Huludao Nonferrous Metals Group Co., Ltd., Henan Yuguang Gold & Lead Co., Ltd. The main drafters of this section. Liu Li, Yan Ge, Liu Limin, Li Dongmei, Zhou Junling. This part of the standard replaces the previous editions are. --- YS/T 227.4-1994; --- GB/T 2140-1980. Methods for chemical analysis of tellurium Part 4. Determination of iron content Phenanthroline spectrophotometry Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section YS/T 227 specifies the method for determination of tellurium in iron content. This section applies to the determination of iron content in tellurium. Measurement range. 0.0005% to 0.006%.

2 principle of the method

Samples with hydrochloric acid, nitric acid dissolved in hydrochloric acid medium, sulfite reduction tellurite to tellurium acid precipitation to remove the matrix, iron and phenanthroline formed Colored complex in a spectrophotometer at a wavelength of 510nm absorbance measurement of iron. Calculate the amount of iron by standard curve method.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as an analytical reagent and water. Are used in the test vessel with dilute aqua regia (11) After soaking, wash thoroughly with a water. Nitrate 3.1 (ρ1.42g/mL), ultra-pure. 3.2 hydrochloride (ρ1.19g/mL), ultra-pure. 3.3 Ammonia (ρ0.90g/mL), ultra-pure. 3.4 sulfurous acid (sulfur dioxide containing not less than 6.0%). 3.5 hydrochloride (11). 3.6 Disodium ethylenediaminetetraacetate solution (100g/L). 3.7 tartaric acid solution (200g/L). 3.8 hydroxylamine hydrochloride solution (100g/L). 3.9 phenanthroline solution (5g/L). Weigh 0.50g phen, was dissolved in 20mL of ethanol, diluted with water to 100mL. 3.10 iron standard stock solution. Weigh 0.1000g iron (≥99.95%), placed in 100mL beaker, add 10mL of hydrochloric acid (3.2), 1mL of nitric acid (3.1), the solution was heated to boil, get rid of nitrogen oxides, is removed, cooled to room temperature, transferred to 1000mL volumetric flask, washed with water Dilute to the mark. This solution 1mL containing 100μg iron. 3.11 Iron standard solution. Pipette 10.00mL iron standard stock solution (3.10), placed in 200mL volumetric flask, dilute to the mark, Shake well. This solution 1mL containing 5μg iron.

4 Instrument

Spectrophotometer. ......

Image     

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