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GB/T 23947.3-2023: General method for the determination of arsenic in inorganic chemical products - Part 3: Atomic fluorescence spectrometry
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| GB/T 23947.3-2023 | English | 169 |
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General method for the determination of arsenic in inorganic chemical products - Part 3: Atomic fluorescence spectrometry
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GB/T 23947.3-2023
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Basic data | Standard ID | GB/T 23947.3-2023 (GB/T23947.3-2023) | | Description (Translated English) | General method for the determination of arsenic in inorganic chemical products - Part 3: Atomic fluorescence spectrometry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G10 | | Classification of International Standard | 71.060.01 | | Word Count Estimation | 8,876 | | Date of Issue | 2023-11-27 | | Date of Implementation | 2024-06-01 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 23947.3-2023: General method for the determination of arsenic in inorganic chemical products - Part 3: Atomic fluorescence spectrometry
---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 71:060:01
CCSG10
National Standards of People's Republic of China
General method for determination of arsenic in inorganic chemical products
Part 3: Atomic Fluorescence Spectroscopy
Published on 2023-11-27
2024-06-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Administration Committee
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:
This document is Part 3 of GB/T 23947 "General Method for Determination of Arsenic in Inorganic Chemical Products": GB/T 23947 has been released
The following sections are included:
---Part 1: Silver diethyldithiocarbamate photometry;
---Part 2: Arsenic spot method;
---Part 3: Atomic fluorescence spectrometry:
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 China Petroleum and Chemical Industry Federation:
This document is under the jurisdiction of the National Chemical Standardization Technical Committee (SAC/TC63):
This document was drafted by: CNOOC Tianjin Chemical Research and Design Institute Co:, Ltd:, Longbai Group Co:, Ltd:, Jiangsu Longchang Chemical Co:, Ltd:
Co:, Ltd:, Zhejiang Glory Biotechnology Co:, Ltd:, Lanbao (Xiamen) Water Treatment Technology Co:, Ltd:, SDIC Xinjiang Lop Nur Potash Co:, Ltd:
Responsible company, Shandong Xinhua Silica Gel Co:, Ltd:, Zhejiang Shuizhiyin Testing Co:, Ltd:
The main drafters of this document: Wang Ying, Deng Bosong, Zhang Jianyu, Yuan Jiwei, Lin Guanghui, Yang Yuming, Qiu Xingdong, Lu Qinghua, Lu Siwei,
Li Jiaojiao, Wu Chunjiang, Ma Songliang:
Introduction
GB/T 23947 takes the determination method of arsenic content in inorganic chemical products as the standardization object, and aims to standardize the arsenic content in inorganic chemical products:
Test procedures for arsenic content determination and obtaining accurate and reliable measurement results: GB/T 23947 consists of the following three parts:
---Part 1: Photometric method of silver diethyldithiocarbamate: The purpose is to standardize the use of silver diethyldithiocarbamate as display
Colorant, arsenic content is measured photometrically at a specific wavelength:
---Part 2: Arsenic spot method: The purpose is to standardize the use of mercuric bromide as chromogenic test paper and the reaction of hydrogen arsine and mercuric bromide to generate specific compounds:
The arsenic content is determined based on the principle of color compounds:
---Part 3: Atomic fluorescence spectrometry: The purpose is to standardize the use of atomic fluorescence spectrometers and use arsenic elements to produce
Characteristics of atomic fluorescence for arsenic content determination:
With the development of detection methods for arsenic content, the use of atomic fluorescence spectrometry to measure arsenic content in inorganic chemical products not only reduces
Toxic substances harm the health of testing personnel, while improving the accuracy and reliability of trace arsenic determination results in inorganic chemical products: Book
The document is a supplement to the current general method for the determination of arsenic in inorganic chemical products:
General method for determination of arsenic in inorganic chemical products
Part 3: Atomic Fluorescence Spectrometry
Warning: Personnel using this document should have practical experience in regular laboratory work: This document does not identify all possible security issues:
Users are responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national regulations:
1 Scope
This document describes a test method for the determination of arsenic in inorganic chemical products using atomic fluorescence spectrometry:
This document is applicable to the determination of arsenic content in inorganic chemical products:
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 6682-2008 Specifications and test methods for water used in analytical laboratories
GB/T 21191 Atomic Fluorescence Spectrometer
HG/T 3696:2 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 2: Impurity standard solutions
Preparation of liquid
HG/T 3696:3 Preparation of standard solutions, preparations and products for chemical analysis of inorganic chemical products Part 3: Preparations and products
Preparation
3 Terms and definitions
There are no terms or definitions to be defined in this document:
4 Principles
After the sample is digested, thiourea-ascorbic acid is added to pre-reduce pentavalent arsenic to trivalent arsenic, and then potassium borohydride is added to further reduce trivalent arsenic:
Arsenic hydrogen is generated by step reduction, and the argon gas is loaded into the quartz atomizer and decomposed into atomic arsenic: Atoms are produced under the excitation of the emitted light of the arsenic element lamp:
Fluorescence, its fluorescence intensity is proportional to the arsenic concentration in the measured solution under fixed conditions, and the arsenic content in the sample can be measured from this:
5 General provisions
The reagents and water used in this document, unless other requirements are noted, refer to analytically pure reagents and secondary reagents specified in GB/T 6682-2008:
grade water: The impurity standard solutions, preparations and products used in the test shall be in accordance with HG/T 3696:2, unless other requirements are indicated:
Preparation as specified in HG/T 3696:3:
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