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SN/T 1031.7-2003 English PDF

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US$199.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 1031.7-2003: Method for the chemical analysis of crude antimony trioxide for export. Determination of arsenic content
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 1031.7-2003	199	Add to Cart	3 days	Method for the chemical analysis of crude antimony trioxide for export. Determination of arsenic content	Valid

Similar standards

YS/T 1085 YS/T 953.1 YS/T 953.9 SN/T 5625 SN/T 1031.6 SN/T 1031.1

Basic data

Standard ID: SN/T 1031.7-2003 (SN/T1031.7-2003)
Description (Translated English): Method for the chemical analysis of crude antimony trioxide for export. Determination of arsenic content
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: H13
Word Count Estimation: 6,640
Date of Issue: 2003-08-18
Date of Implementation: 2004-02-01
Quoted Standard: GB/T 3253.1-2001; GB/T 3254.2-1998
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People Republic of China
Summary: This standard specifies the import and export of crude antimony oxide method for the determination of arsenic. This standard applies to export crude antimony trioxide arsenic content. Measuring range: 0. 010% to 1. 20%.

SN/T 1031.7-2003: Method for the chemical analysis of crude antimony trioxide for export. Determination of arsenic content

---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 the chemical analysis of crude antimony trioxide for export.Determination of arsenic content Book of the People's Republic of China Entry and Exit Inspection and Quarantine Chemical analysis method for crude yttrium oxide Determination of arsenic content Released on.2003-08-18 2004-02-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

SN/T 1031 "Chemical Analysis Method for Import and Export Crude Oxide" is divided into the following seven parts. --- Part 1. Determination of mercury content; --- Part 2. Determination of total sputum; --- Part 3. Determination of the content of antimony trioxide; --- 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 part is the seventh part of SN/T 1031. This part is proposed and managed by the National Certification and Accreditation Administration of the People's Republic of China. This section drafted by. Guangdong Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this section. Guo Hancheng, Mao Qiumei, Zhong Meifang. This section is the first industry standard for entry-exit inspection and quarantine. Chemical analysis method for crude yttrium oxide Determination of arsenic content

1 Scope

This section specifies the method for determination of arsenic in crude cerium oxide for import and export. This section applies to the determination of arsenic content in raw and exported crude cerium oxide. Measuring range. 0.010% to 1.20%.

2 Normative references

The terms in the following documents become the terms of this standard by reference to this standard. All dated references, followed by all Modifications (not including errata content) or revisions do not apply to this section, however, parties to agreements based on this standard are encouraged to study Is it possible to use the latest version of these files? For undated references, the latest edition applies to this standard. GB/T 3253.1-2001 Determination of arsenic content GB/T 3254.2-1998 Determination of arsenic content

3 Method summary

The sample is decomposed with sulfuric acid-potassium sulfate, and the arsenic trichloride is extracted with benzene in a hydrochloric acid solution having a concentration of not less than 9 mol/L to make the matrix and Coexisting impurities are separated. Re-extract arsenic with water and oxidize to pentavalent arsenic, add ammonium molybdate, then add barium sulfate to form arsenic molybdenum blue, in spectrophotometer The absorbance was measured at a wavelength of 660 nm.

4 reagents

Unless otherwise stated, only analytically pure reagents and distilled or deionized water or water of comparable purity were used in the analysis. 4.1 Benzene. 4.2 Potassium sulfate. 4.3 Sulfuric acid (ρ=1.84g/mL). 4.4 Sulfuric acid (1+20). 4.5 Hydrochloric acid (ρ = 1.19 g/mL). 4.6 Hydrochloric acid (3+1). 4.7 Hydrochloric acid (1+1). 4.8 Sulfurous acid (1+2). 4.9 Sodium hydroxide solution (300g/L). Store in plastic bottles. 4.10 Iodine solution (5g/L). Weigh 0.5g of iodine, 1g of potassium iodide in a 250mL beaker, add 5mL of water to dissolve, dilute with water to 100 mL, stored in brown glass bottles. 4.11 Ammonium molybdate solution (15g/L). Weigh 1.5g ammonium molybdate [(NH4)6Mo7O24·4H2O] in a 250mL beaker, add Dissolve 40 mL of water, add 50 mL of sulfuric acid (1+1), cool and transfer to a glass bottle, dilute to 100 mL with water, and mix. 4.12 Barium sulfate solution (0.5g/L). 4.13 Phenolphthalein ethanol solution (1g/L). 4.14 Arsenic standard storage solution. weigh 0.1320g and pre-cooled at 100 °C ~ 110 °C for 2h in a desiccator to cool to room temperature. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 1031.7-2003_English be delivered?

Answer: Upon your order, we will start to translate SN/T 1031.7-2003_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of SN/T 1031.7-2003_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 1031.7-2003_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.