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SN/T 4762-2017 English PDF

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US$229.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
SN/T 4762-2017: Determination of fluorine and chlorine in coal--Ion chromatography
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
SN/T 4762-2017	229	Add to Cart	3 days	Determination of fluorine and chlorine in coal--Ion chromatography	Valid

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Basic data

Standard ID: SN/T 4762-2017 (SN/T4762-2017)
Description (Translated English): Determination of fluorine and chlorine in coal--Ion chromatography
Sector / Industry: Commodity Inspection Standard (Recommended)
Classification of Chinese Standard: D21
Word Count Estimation: 10,143
Date of Issue: 2017-05-12
Date of Implementation: 2017-12-01
Regulation (derived from): State-Quality-Inspection-Accreditation (2017) 228
Issuing agency(ies): General Administration of Customs

SN/T 4762-2017: Determination of fluorine and chlorine in coal--Ion chromatography

---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.
(Determination of fluorine and chlorine in coal - Ion chromatography) People's Republic of China Entry-Exit Inspection and Quarantine Industry Standard Determination of fluorine and chlorine in coal - Ion chromatography Released on.2017-05-12 2017-12-01 implementation People's Republic The General Administration of Quality Supervision, Inspection and Quarantine issued

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed and managed by the National Certification and Accreditation Administration. This standard is mainly drafted by. Shanxi Entry-Exit Inspection and Quarantine Bureau of the People's Republic of China. The main drafters of this standard. Pan Yali, Zhao Fabao, Yuan Li, Kang Lihua, Liu Haifeng, Guo Xiaoxi, Yao Yating, Liu Xiaolin. Determination of fluorine and chlorine in coal - Ion chromatography

1 Scope

This standard specifies the method of ion chromatography for the determination of fluorine and chlorine in coal. This standard applies to the determination of fluoride ion (F-) and chloride ion (Cl-) content in coal. The limit of quantitation of the method. fluorine 10.3 μg/g, Chlorine 0.0015%.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. Industrial analysis method of GB/T 212 coal GB/T 213 coal calorific value measuring method Preparation method of GB/T 474 coal sample Preparation of standard solution for GB/T 602 chemical reagent impurity determination GB/T 6682 Analytical laboratory water specifications and test methods

3 Method summary

A certain amount of coal is completely burned in an oxygen bomb filled with excess oxygen, and the released fluorine and chlorine are absorbed by the ammonium carbonate solution, and the oxygen bomb is rinsed with water. Internally, the absorption liquid is completely transferred to the beaker, and after filtration and constant volume, the potassium hydroxide solution is used as the eluent, and the filtration is performed by ion chromatography external standard method. The content of fluorine and chlorine in the liquid.

4 reagents and materials

Unless otherwise specified, the reagents used in this standard are of analytical grade, and the test water is the first grade water specified in GB/T 6682. 4.1 anhydrous ammonium carbonate, excellent grade pure. 4.2 10 g/L ammonium carbonate [(NH4) 2CO3] solution. Weigh 5.0 g of ammonium carbonate dissolved in water to prepare a 500 mL solution. 4.3 Potassium hydroxide eluent, prepared according to the instrument manual or electrolytic eluent generator. See Appendix A for the eluent gradient. 4.4 Oxygen, purity above 99.5%, free of combustible materials. 4.5 Fluorine standard stock solution (1000μg/mL). Prepare according to GB/T 602 method or directly use the national certified standard solution. 4.6 Chlorine standard stock solution (1000μg/mL). Prepare according to GB/T 602 method or directly use the national certified standard solution. 4.7 Mixed standard working solution. According to the ion concentration in Table 1, prepare mixed standard working solution (also according to the ion concentration in the sample solution) The range is adjusted appropriately, or directly diluted with water using a standard aqueous solution of a standard with a standard substance certificate. Table 1 Concentration standard of mixed ion standard solution is microgram per milliliter Serial number F- Cl- ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of SN/T 4762-2017_English be delivered?

Answer: Upon your order, we will start to translate SN/T 4762-2017_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 4762-2017_English with my colleagues?

Answer: Yes. The purchased PDF of SN/T 4762-2017_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.