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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 43220-2023 | English | 269 |
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Determination of arsenic in solid biofuels
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GB/T 43220-2023
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Basic data | Standard ID | GB/T 43220-2023 (GB/T43220-2023) | | Description (Translated English) | Determination of arsenic in solid biofuels | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D21 | | Classification of International Standard | 73.040 | | Word Count Estimation | 14,196 | | Date of Issue | 2023-09-07 | | Date of Implementation | 2024-04-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration |
GB/T 43220-2023: Determination of arsenic in solid biofuels---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 73.040
CCSD21
National Standards of People's Republic of China
Method for determination of arsenic in solid biomass fuels
Published on 2023-09-07
2024-04-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
Table of contents
Preface III
1 Scope 1
2 Normative reference documents 1
3 Terms and Definitions 1
4 Hydride generation-atomic fluorescence spectrometry 1
5 Hydrogen generation-atomic absorption method 4
6 Calculation and presentation of results 6
7 Method Precision 6
8 Test report 7
Appendix A (informative) Instrument reference working conditions 8
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. Coal Testing Center of Coal Science and Technology Research Institute Co., Ltd.
The main drafters of this document. Chen Huizhu, Fu Kun, and Chen Sihan.
Method for determination of arsenic in solid biomass fuels
1 Scope
This document describes the hydride generation-atomic fluorescence spectrometry and hydride generation-atomic absorption methods for the determination of arsenic in solid biomass fuels.
Method summary, reagents and materials, instruments and equipment, samples, test procedures, result calculation and presentation, method precision and test report.
This document applies to the determination of arsenic in solid biomass fuels.
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 622 Chemical reagent hydrochloric acid
GB/T 623 Chemical reagent perchloric acid
GB/T 625 Chemical Reagent Sulfuric Acid
GB/T 626 Chemical reagent nitric acid
GB/T 6682 Specifications and test methods for water used in analytical laboratories
GB/T 6684 Chemical reagent 30% hydrogen peroxide
GB/T 15337 General principles of atomic absorption spectrometry
GB/T 21191 Atomic Fluorescence Spectrometer
GB/T 21923 General rules for inspection of solid biomass fuel
GB/T 26814 Microwave digestion device
GB/T 28730 Solid biomass fuel sample preparation method
3 Terms and definitions
The terms and definitions defined in GB/T 21923 apply to this document.
4 Hydride generation-atomic fluorescence spectrometry
4.1 Summary of methods
After the solid biomass fuel is digested by microwave digestion, wet digestion or Ashka mixed burning method, a pre-reducing agent is added to reduce the pentavalent arsenic.
into trivalent arsenic, and use sodium borohydride to reduce the trivalent arsenic to gaseous hydride. Argon is used as a carrier gas to introduce the gaseous hydride obtained by reduction into atoms.
In a certain concentration range, the fluorescence intensity is directly proportional to the arsenic content. The arsenic content in the solution can be measured by comparing with the standard series.
4.2 Reagents and materials
Warning. The strong acid used in the test is highly corrosive and oxidizing. Protective equipment must be worn during operation and avoid contact with skin and clothing. All
The sample pretreatment process needs to be carried out in a fume hood.
Unless otherwise stated, chemical reagents of analytical grade and above that comply with national standards are used in the analysis, and the water used is in compliance with GB/T 6682 regulations.
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