SN/T 1031.6-2012 English PDF

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SN/T 1031.6-2012: Chemical analysis of crude antimony trioxide for export. Part 6: Determination of lead and iron contents
Status: Valid

SN/T 1031.6: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1031.6-2012	209	Add to Cart	3 days	Chemical analysis of crude antimony trioxide for export. Part 6: Determination of lead and iron contents	Valid
SN/T 1031.6-2001	279	Add to Cart	3 days	The export crude antimony oxide chemical analysis method lead, Determination of iron content	Obsolete

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YS/T 1085   YS/T 953.1   YS/T 953.9   SN/T 5697   SN/T 5625   SN/T 1031.1   

Basic data

Standard ID: SN/T 1031.6-2012 (SN/T1031.6-2012)
Description (Translated English): Chemical analysis of crude antimony trioxide for export. Part 6: Determination of lead and iron contents
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.040.30
Word Count Estimation: 8,810
Older Standard (superseded by this standard): SN/T 1031.6-2001
Quoted Standard: GB/T 6682; GB/T 21187-2007
Regulation (derived from): National Quality Inspection (2012) 237; industry standard filing Notice 2012 No. 9 (Total No. 153);
Issuing agency(ies): General Administration of Customs
Summary: This standard specifies the flame atomic absorption spectrophotometry export crude antimony oxide, lead and iron content approach. This standard applies to exports of crude antimony oxide, lead and iron content. Measuring range: Lead: 0. 005% to 1% (mass

SN/T 1031.6-2012: Chemical analysis of crude antimony trioxide for export. Part 6: Determination of lead and iron contents

---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.
Chemical analysis of crude antimony trioxide for export.Part 6. Determination of lead and iron contents People's Republic of China Entry-Exit Inspection and Quarantine Standards Instead of the SN/T 1031.6-2001 Exports of crude antimony oxide chemical analysis methods Part 6. Determination of lead and iron content Part 6. Determinationofleadandironcontents Issued on. 2012-05-07 2012-11-16 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released

Foreword

SN/T 1031 "chemical analysis of antimony oxide crude exports" is divided into seven parts. --- Part 1. Determination of mercury content; --- Part 2. Determination of total antimony content; --- Part 3. Determination of antimony content; --- Part 4. Determination of fluorine content; --- Part 5. Determination of selenium content; --- Part 6. Determination of lead and iron content; --- Part 7. Determination of arsenic content. This section SN/T 1031 Part 6. This section drafted in accordance with GB/T 1.1-2009 given rules. The partial replacement of SN/T 1031.6-2001 "Analysis of export crude antimony oxide chemical lead, Determination of iron content." This section compared with the SN/T 1031.6-2001, the main technical changes are as follows. --- Add a description of the preamble; --- Revised Chapter 2, "Normative references"; --- Modify the atomic absorption spectrophotometer described in Chapter 5; --- Will be split into Chapter 6, "Chapter 6, sample preparation" and "Chapter 7 Analysis Procedure"; --- Modify the content of "Chapter 7 Analysis Procedure". the unity of the sample weight, increase the dilution of the description of the operation and the sample solution description; --- Modify the formula to calculate the results. This section proposed and managed by the National Certification and Accreditation Administration Committee. This section was drafted by. People's Republic of China Guangdong CIQ. The main drafters of this section. Lu Zhenguo, anti-Ruan Yong, Luo Yumei, He Yingxian, Zhong Zhiguang, Li Shilun, Chen Peiling. This part of the standard replaces the previous editions are. --- SN/T 1031.6-2001. Exports of crude antimony oxide chemical analysis methods Part 6. Determination of lead and iron content Warning. Use this section to a person SN/T 1031 should experience regular laboratory work. This section does not indicate all available Energy security issues. User sound responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This section SN/T 1231 specifies the flame atomic absorption spectrophotometry export crude antimony oxide of lead, iron content approach. This section applies to the determination of export crude antimony oxide of lead, iron content. Measurement range. Pb. 0.005% to 1% (mass fraction), Iron. 0.002% to 0.5% (mass fraction).

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 21187-2007 atomic absorption spectrophotometer

3 Method summary

Sample of hydrochloric acid and nitric acid is dissolved, evaporated, to remove most of the volatiles hydrobromide antimony in dilute hydrochloric acid medium, atomic absorption spectrophotometer Meter wavelength 283.3nm, 248.3nm at each measuring lead, iron absorbance obtained from the concentration and then calculate the appropriate operating curve Its content. Crude antimony oxide in the other impurities not interfere with the determination.

4 Reagents

Unless otherwise indicated, used in the analysis confirmed that only analytical grade reagents, water GB/T 6682 provisions tertiary water. 4.1 Hydrochloride (ρ. 1.19g/mL). 4.2 nitric acid (ρ. 1.42g/mL). 4.3 hydrobromide (ρ. 1.48g/mL). 4.4 hydrochloride (11). 4.5 nitric acid (11). 4.6 lead standard stock solution (1000μg/mL). Weigh 1.0000g pure lead, placed in 250mL beaker, add 20mL nitrate Acid (4.5), cover with a watch glass, heated and dissolved to clear, boiled to remove oxides of nitrogen and cooled. Moved into 1000mL volumetric flask, dilute with water Release to the mark. 4.7 lead standard solution (100μg/mL). Pipette 10.00mL lead standard stock solution (4.6) in 100mL flask, add 5mL salt Acid (4.4), diluted with water to the mark. 4.8 Standard Iron stock solution (1000μg/mL). Weigh 1.0000g iron, placed in 250mL beaker, add 20mL nitrate Acid (4.5), cover with a watch glass, heated and dissolved to clear, boiled to remove oxides of nitrogen and cooled. Moved into 1000mL volumetric flask, dilute with water ......

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