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GB/T 31947-2015 English PDF

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US$128.00 · In stock
Delivery: <= 1 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 31947-2015: Iron ores -- Determination of mercury content -- Solid sampling and direct mercury analysis method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31947-2015	128	Add to Cart	1 days	Iron ores -- Determination of mercury content -- Solid sampling and direct mercury analysis method	Valid

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Basic data

Standard ID: GB/T 31947-2015 (GB/T31947-2015)
Description (Translated English): Iron ores -- Determination of mercury content -- Solid sampling and direct mercury analysis method
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D31
Classification of International Standard: 73.060.10
Word Count Estimation: 9,919
Date of Issue: 2015-09-11
Date of Implementation: 2016-06-01
Quoted Standard: GB/T 602; GB/T 6379.2; GB/T 6682; GB/T 8170; GB/T 10322.1; JJG 548
Regulation (derived from): National Standard Announcement 2015 No.25
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Standard specifies the method for determination of solid sampling mercury content measured directly. This Standard applies to the determination of mercury content in iron ore, measurement range: 0.005 ��g/g ~ 5.00 ��g/g.

GB/T 31947-2015: Iron ores -- Determination of mercury content -- Solid sampling and direct mercury analysis method

---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.
Iron ores - Determination of mercury content - Solid sampling and direct mercury analysis method ICS 73.060.10 D31 National Standards of People's Republic of China Determination of mercury content of iron ore Direct solid sampling assay Issued on. 2015-09-11 2016-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The standard proposed by China Iron and Steel Association. This standard by the national iron ore and direct reduced iron Standardization Technical Committee (SAC/TC317) centralized. This standard was drafted. Tianjin Entry-Exit Inspection and Quarantine Bureau of Metallurgical Industry Information Standards Institute. The main drafters of this standard. Su Mingyue, Gu Songhai, Guo Fen, Yang Jinkun, right Li Bin, Wang Hong, Song Yi, Wang Haoyun, newly Hood, Chenzi Bin. Determination of mercury content of iron ore Direct solid sampling assay Warning --- the use of this standard should have practical experience in regular laboratory work. This standard does not point out all possible security problem. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions of the relevant provisions of the State.

1 Scope

This standard specifies the method for determination of solid sampling mercury content measured directly. This standard applies to the determination of mercury content in iron ore, measuring range. 0.005μg/g ~ 5.00μg/g.

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. Preparation of standard solution of GB/T 602 Determination of impurities in chemical reagents GB/T 6379.2 measurement methods and results of Accuracy (trueness and precision) - Part 2. Determine the standard measurement method to repeat Of the basic methods of reproduction Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 8170 repair value expressed about the rules and limit values and judgment GB/T 10322.1 iron ore sampling and sample preparation methods JJG548 mercury analyzer test procedures Principle 3 In an oxygen atmosphere, the sample was dried in calciner and thermal decomposition, the decomposition products by the catalytic oxygen stream is supplied to the furnace, the addition After impurities and catalytic decomposition, sample pyrolysis mercury into mercury atoms, selective capture by the flow of oxygen into the gold amalgam vessel. After purification system was purged with oxygen, rapid heating of the amalgam, a mercury vapor released. Mercury vapor is brought into the single-wavelength optical absorption cell at a wavelength 253.65nm mercury measured absorbance was quantified using the standard curve method.

4 Reagents and materials

Unless otherwise indicated in the analysis using only the gifted class pure reagents and in line with a water or equivalent purity water GB/T 6682 regulations. 4.1 nitric acid, ρ1.42g/mL. 4.2 nitric acid solution, 119. 4.3 potassium dichromate. 4.4 potassium dichromate solution, 10g/L. Weigh 1g potassium dichromate (see 4.3) were dissolved in 100mL of water. 4.5 mercury standard stock solution, 100μg/mL. According to GB/T 602 method of preparation, or direct use of certified reference materials. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 31947-2015_English be delivered?

Answer: Upon your order, we will start to translate GB/T 31947-2015_English as soon as possible, and keep you informed of the progress. The lead time is typically in 24 hours. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 31947-2015_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 31947-2015_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.