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GB/T 6324.12-2023: Test method of organic chemical products - Part 12: Determination of trace mercury in organic liquid products - Atomic fluorescence spectrometric method
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Test method of organic chemical products - Part 12: Determination of trace mercury in organic liquid products - Atomic fluorescence spectrometric method
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GB/T 6324.12-2023
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Basic data | Standard ID | GB/T 6324.12-2023 (GB/T6324.12-2023) | | Description (Translated English) | Test method of organic chemical products - Part 12: Determination of trace mercury in organic liquid products - Atomic fluorescence spectrometric method | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G15 | | Classification of International Standard | 71.080.01 | | Word Count Estimation | 10,182 | | 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 6324.12-2023: Test method of organic chemical products - Part 12: Determination of trace mercury in organic liquid products - 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 71.080.01
CCSG15
National Standards of People's Republic of China
Test methods for organic chemical products
Part 12.Trace amounts of mercury in organic liquid chemical products
atomic fluorescence method
Published on 2023-09-07
2024-04-01 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 12 of GB/T 6324 "Test Methods for Organic Chemical Products". GB/T 6324 has released the following parts.
---Part 1.Water miscibility test of liquid organic chemical products;
---Part 2.Determination of dry residue after evaporation of volatile organic liquids on a water bath;
---Part 3.Determination of reduced potassium permanganate substances;
---Part 4.Determination of trace sulfur in organic liquid chemical products by microcoulometric method;
---Part 5.Determination of carbonyl compound content in organic chemical products;
---Part 6.Determination of liquid colorimetry by tristimulus value colorimetry;
---Part 7.Determination of melt colorimetry;
---Part 8.Determination of moisture content of liquid products by Karl Fischer Coulombometry;
---Part 9.Determination of chlorine;
---Part 10.Determination of trace sulfur in organic liquid chemical products by UV fluorescence method;
---Part 11.Determination of trace amounts of arsenic in liquid chemical products by atomic fluorescence method;
---Part 12.Determination of trace amounts of mercury in organic liquid chemical products by atomic fluorescence method.
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. Nanjing Qunke Chemical Research Institute, Shandong Dongbo Petrochemical Co., Ltd., Shandong Huifeng Petrochemical Group Co., Ltd.
Shandong Product Quality Inspection Institute, Jiangxi Shengyuan New Materials Co., Ltd., Zhejiang Shaxing Technology Co., Ltd., Linyi City, Shandong Province San
Feng Chemical Co., Ltd., Binzhou Yuneng Chemical Co., Ltd., Maiqi Chemical Co., Ltd., Dongguan Weiside Technology Development Co., Ltd., China
Petrochemical (Beijing) Chemical Industry Research Institute Co., Ltd., Zhejiang Hongyuan Pharmaceutical Co., Ltd., Yueyang Zhenxing Zhongshun New Material Technology Co., Ltd.
company.
The main drafters of this document. Zou Huiling, Zheng Jinfeng, Huang Yu, Qiu Ailing, Shao Huihui, Xing Maosen, Li Haitao, Fang Fei, Li Hongjun, Liu Mingzhen,
Xu Yibin, Yan Guangxue, Zhang Wenfu, Liu Hongyan, Zhu Youjiang, Jin Hui, Chen Pan.
Introduction
GB/T 6324 aims to establish unified test methods for organic chemical products involving many inspection items, and along with the analysis technology
Update and improve the development and maturity of the project and the universality of test project requirements. This series of standards consists of the following twelve parts.
---Part 1.Water miscibility test of liquid organic chemical products;
---Part 2.Determination of dry residue after evaporation of volatile organic liquids on a water bath;
---Part 3.Determination of reduced potassium permanganate substances;
---Part 4.Determination of trace sulfur in organic liquid chemical products by microcoulometric method;
---Part 5.Determination of carbonyl compound content in organic chemical products;
---Part 6.Determination of liquid colorimetry by tristimulus value colorimetry;
---Part 7.Determination of melt colorimetry;
---Part 8.Determination of moisture content of liquid products by Karl Fischer Coulombometry;
---Part 9.Determination of chlorine;
---Part 10.Determination of trace sulfur in organic liquid chemical products by UV fluorescence method;
---Part 11.Determination of trace amounts of arsenic in liquid chemical products by atomic fluorescence method;
---Part 12.Determination of trace amounts of mercury in organic liquid chemical products by atomic fluorescence method.
Test methods for organic chemical products
Part 12.Trace amounts of mercury in organic liquid chemical products
atomic fluorescence method
Warning---Some reagents used in this document are toxic or corrosive, and some operations are dangerous. This document does not disclose the
There are possible safety issues. Users should strictly follow relevant regulations for correct use and are responsible for taking appropriate safety and health measures.
1 Scope
This document describes a method for the determination of trace amounts of mercury in organic liquid chemical products using atomic fluorescence.
This document is applicable to the determination of trace amounts of mercury in organic liquid chemical products such as hydrocarbons, alcohols, and acids.
When the weighed sample amount is 1.0g and the fixed volume is 50mL, the detection limit of the method in this document is 0.001mg/kg.
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 3723 General Safety Principles for Sampling Industrial Chemical Products
GB/T 6680 General rules for sampling of liquid chemical products
GB/T 8170 Numerical rounding rules and representation and determination of limit values
GB/T 33087 Specifications and test methods for high-purity water for instrumental analysis
3 Terms and definitions
There are no terms or definitions to be defined in this document.
4 Method Principle
Digest the sample with potassium permanganate and potassium persulfate in a sulfuric acid-nitric acid medium under heating conditions. All mercury contained in the digested sample
Converted into divalent mercury, hydroxylamine hydrochloride reduces the excess oxidant, and potassium borohydride reduces divalent mercury into atomic mercury, which is brought into the atomizer by the carrier gas
, under the irradiation of a mercury hollow cathode lamp, the ground state mercury atoms are excited to a high energy state. When deactivated and returned to the ground state, fluorescence of characteristic wavelength is emitted.
Light, its fluorescence intensity is proportional to the mercury concentration in the tested solution within a certain range. Compared with the standard series of solutions, the mercury concentration in the sample can be measured
content.
5 General provisions
5.1 Unless otherwise stated, the reagents used in this document are all high-grade pure reagents, and the test water is high-purity water specified in GB/T 33087.
5.2 The digestion inner tank and glassware of the pressure digester should be soaked in nitric acid solution for at least 24 hours, and rinsed with high-purity water before use.
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