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NB/T 11264-2023 English PDF

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US$179.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
NB/T 11264-2023: Determination of arsenic, mercury and selenium in oil shale - Atomic Fluorescence spectrometric method
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
NB/T 11264-2023	179	Add to Cart	3 days	Determination of arsenic, mercury and selenium in oil shale - Atomic Fluorescence spectrometric method	Valid

Similar standards

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Basic data

Standard ID: NB/T 11264-2023 (NB/T11264-2023)
Description (Translated English): Determination of arsenic, mercury and selenium in oil shale - Atomic Fluorescence spectrometric method
Sector / Industry: Energy Industry Standard (Recommended)
Classification of Chinese Standard: A40;A49
Classification of International Standard: 73.010
Word Count Estimation: 9,941
Date of Issue: 2023-05-26
Date of Implementation: 2023-11-26
Issuing agency(ies): National Energy Administration

NB/T 11264-2023: Determination of arsenic, mercury and selenium in oil shale - Atomic Fluorescence spectrometric 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.
ICS 73.010 CCSA40/49 Energy Industry Standards of the People's Republic of China Determination of arsenic, mercury and selenium content in oil shale Atomic fluorescence spectrometry Published on 2023-05-26 Implemented on 2023-11-26 Released by the National Energy Administration

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the China Coal Industry Association. This document is under the jurisdiction of the National Coal Standardization Technical Committee (SAC/TC42). This document was drafted by. Chongqing Institute of Geology and Mineral Resources, Xinjiang Uygur Autonomous Region Coalbed Methane Testing Research Institute (Xinjiang Uygur Autonomous Region District Coal Product Quality Inspection Center), Chongqing Huadi Environmental Technology Co., Ltd. The main drafters of this document. Zhou Min, Lu Xiaohai, Zhao Xuedao, Wang Chunlian, Gong Zhou, Yang Jie, Che Pingping, Wang Xiong. Determination of arsenic, mercury and selenium content in oil shale Atomic fluorescence spectrometry Warning. Nitric acid and hydrochloric acid are highly corrosive. The sample digestion process should be carried out in a fume hood. Experimenters should pay attention to wearing protective equipment.

1 Scope

This document specifies the method summary, reagents and materials, instruments and equipment, analysis methods for the determination of arsenic, mercury and selenium content in oil shale by atomic fluorescence spectrometry. Analytical steps, result calculation and expression, method precision and accuracy, quality assurance and quality control. This document is applicable to the determination of arsenic, mercury and selenium content in oil shale. The detection limits of arsenic, mercury and selenium content in oil shale determined by atomic fluorescence spectrometry. arsenic 0.0096 μg/g, mercury 0.0019 μg/g, selenium 0.0096μg/g.

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document. GB/T 6379.2 Accuracy of measurement methods and results (correctness and precision) Part 2.Determination of repeatability of standard measurement methods Basic methods of sex and reproducibility GB/T 6682 Specifications and test methods for water used in analytical laboratories

3 Terms and definitions

There are no terms or definitions to be defined in this document.

4 Method summary

After the sample is digested by microwave, pentavalent arsenic is pre-reduced to trivalent arsenic using thiourea-ascorbic acid under acidic conditions, and then hydroborated. Potassium is used as a reducing agent to reduce arsenic, mercury and selenium in the sample to arsine gas, mercury vapor and hydrogen selenide. Argon gas is used as the carrier gas to introduce atomization. In the instrument, the contents of arsenic, mercury and selenium were measured on an atomic fluorescence spectrometer.

5 Reagents and materials

Unless otherwise stated, reagents confirmed to be of analytical grade or above and grade three or above evaporators that comply with GB/T 6682 are used in the analysis. Distilled water or water of equivalent purity. 5.1 Potassium hydroxide. 5.2 Potassium borohydride. 5.3 Thiourea. 5.4 Ascorbic acid. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of NB/T 11264-2023_English be delivered?

Answer: Upon your order, we will start to translate NB/T 11264-2023_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 NB/T 11264-2023_English with my colleagues?

Answer: Yes. The purchased PDF of NB/T 11264-2023_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.