YS/T 74.9-2010 English PDF

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YS/T 74.9-2010: Methods of chemical anaysis of cadmium. Part 9: Determination of tin content. Hydride generation-atomic fluorescence spectrometry
Status: Valid

YS/T 74.9: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 74.9-2010	209	Add to Cart	3 days	Methods of chemical anaysis of cadmium. Part 9: Determination of tin content. Hydride generation-atomic fluorescence spectrometry	Valid
YS/T 74.9-1994	199	Add to Cart	2 days	(Chemical analysis of cadmium Phenylfluorone - bromo cetyl trimethylamine spectrophotometric determination of tin content)	Obsolete

Similar standards

GB/T 3884.2   GB/T 3884.1   YS/T 252.1   YS/T 74.1   YS/T 74.3   YS/T 74.10   

Basic data

Standard ID: YS/T 74.9-2010 (YS/T74.9-2010)
Description (Translated English): Methods of chemical anaysis of cadmium. Part 9: Determination of tin content. Hydride generation-atomic fluorescence spectrometry
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.70
Word Count Estimation: 8,822
Date of Issue: 2010-11-22
Date of Implementation: 2011-03-01
Older Standard (superseded by this standard): YS/T 74.9-1994
Regulation (derived from): MIIT (2010) No. 126
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the amount of cadmium in the determination of tin. This standard applies to the determination of cadmium in the tin. Measuring range: 0. 00010% to 0. 0050%.

YS/T 74.9-2010: Methods of chemical anaysis of cadmium. Part 9: Determination of tin content. Hydride generation-atomic fluorescence spectrometry

---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 of chemical anaysis of cadmium.Part 9. Determination of tin content.Hydride generation-atomic fluorescence spectrometry ICS 77.120.70 H13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 74.9-1994 Methods for chemical analysis of cadmium Part 9. Determination of tin content Hydride Generation - Atomic Fluorescence Spectrometry Part 9. Determinationoftincontent- 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 74-2010 "cadmium chemical analysis method" is divided into 11 parts. --- Part 1. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry; --- Part 2. Determination of antimony content hydride generation - atomic fluorescence spectrometry; --- Part 3. Determination of nickel content by electrothermal atomic absorption spectrometry; --- Part 4. Determination of lead content by flame atomic absorption spectrometry; --- Part 5. Determination of the amount of copper diethyl dithiocarbamate spectrophotometry lead; --- Part 6. Determination of zinc content - Flame atomic absorption spectrometry; --- Part 7. Determination of iron content of 1,10 phenanthroline spectrophotometry; --- Part 8. Determination of thallium content of crystal violet spectrophotometry; --- Part 9. Determination of tin content by hydride generation - atomic fluorescence spectrometry; --- Part 10. Determination of the amount of silver by flame atomic absorption spectrometry; --- Part 11. Inductively coupled plasma atomic arsenic, antimony, nickel, lead, copper, zinc, iron, thallium, tin and silver content of the emitted light Spectroscopy. Part is divided into 9 parts. This section drafted in accordance with GB/T 1.1-2009 given rules. The partial replacement of YS/T 74.9-1994 "cadmium chemical analysis Phenylfluorone - bromo cetyl trimethylamine spectrophotometry measuring tin Amount ", this section compared with the original standards, the main changes are as follows. --- Analytical methods to hydride generation - atomic fluorescence spectrometry; --- Increase the warning prompt; --- Increased precision, quality assurance and control provisions; --- Increasing the test report clause. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. MCC Huludao Nonferrous Metals Group Co., Ltd. This section is drafted. Beijing General Research Institute of Mining and Metallurgy. Participated in the drafting of this section. MCC Huludao Nonferrous Metals Group Co., Ltd., Liaoning Entry Inspection and Quarantine Bureau. The main drafters of this section. to force Tangshu Fang, Liu Pengfei, GEOPHYS ICAL PROSPECTING, Yang Weilin, Li Yan, Dong Xiuwen. This part of the standard replaces the previous editions are. --- YS/T 74.9-1994; --- GB/T 2135-1980. Methods for chemical analysis of cadmium Part 9. Determination of tin content Hydride Generation - Atomic Fluorescence Spectrometry Warning --- Use this section shall be a person experiences regular laboratory work, and have the use of atomic fluorescence spectrometer skills, In strict accordance with safety procedures atomic fluorescence spectrometer operation.

1 Scope

YS/T of the provisions of section 74 of the method for the determination of cadmium in the amount of tin. This section applies to the determination of cadmium in the amount of tin. Measurement range. 0.00010% to 0.0050%.

2 principle of the method

The sample was dilute nitric acid, sulfuric acid and dissolved by heating to take the best trioxide smoke. In sulfuric acid (199) medium, tin (Ⅳ) is also potassium borohydride Into the original tin hydride with argon gas into the quartz furnace atomizer, the fluorescence intensity was measured on a tin atomic fluorescence spectrometer.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical reagents and secondary distilled water or equivalent purity. 3.1 nitric acid (11), pure class distinctions. 3.2 sulfuric acid (11), pure class distinctions. 3.3 sulfuric acid (199), pure class distinctions. 3.4 thiourea - ascorbic acid solution. Weigh 5g thiourea, 5g ascorbic acid, dissolved in water and diluted to 100mL, and mix. 3.5 solution of potassium borohydride (15g/L). Weigh 7.5g of potassium borohydride, dissolved in 500mL of potassium hydroxide solution (5.0g/L), and mix well. use When existing service. 3.6 Storage tin standard solution. Weigh 0.1000g metal tin (wSn≥99.99%) (washed with dilute hydrochloric acid prior to said surface oxide, then B Alcohol to dry thoroughly washed), plus 100mL sulfuric acid (3.2), low dissolved by heating, cooling, transferred to 1000mL volumetric flask, constant volume of water to the mark Degree, and mix. This solution 1mL containing 100μg tin. 3.7 tin standard solution. Pipette 1.00mL tin standard stock solution (3.6) in 100mL flask, add 2mL of sulfuric acid (3.2), dilute Diluted to volume, and mix. This solution 1mL containing 1μg tin. 3.8 Cadmium substrate solution (50g/L). Weigh 50g of high purity cadmium (wCd≥99.999%), placed in 250mL beaker, dissolved in 100mL of Nitric acid (3.1), and concentrated to a small volume, transferred to 1000mL volumetric flask, dilute with water to volume, and mix. Argon 3.9, the volume fraction of not less than 99.99%.

4 Instrument

Intermittent flow dual-channel non-dispersive atomic fluorescence spectrometer, atomic and tin hollow cathode lamps, intermittent flow instrument and computer with a quartz furnace Processing system. Under optimum working conditions for those who can reach the following indicators can be used. ......

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