GB/T 5195.12: Evolution and historical versions
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Methods for chemical analysis of fluorspar - Part 12: Determination of arsenic content
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GB/T 5195.12-2025
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| GB/T 5195.12-2016 | English | 170 |
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Fluorite - Determination of arsenic content - Atomic fluorescence spectrometry
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GB/T 5195.12-2016
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Basic data | Standard ID | GB/T 5195.12-2025 (GB/T5195.12-2025) | | Description (Translated English) | Methods for chemical analysis of fluorspar - Part 12: Determination of arsenic content | | Sector / Industry | National Standard (Recommended) | | Date of Implementation | 2026-03-01 | | Older Standard (superseded by this standard) | GB/T 5195.12-2016, GB/T 5195.19-2018 | GB/T 5195.12-2016: Fluorite - Determination of arsenic content - Atomic fluorescence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.
Fluorite - Determination of arsenic content - Atomic fluorescence spectrometry
ICS 73.080
D52
National Standards of People's Republic of China
Determination of arsenic content in fluorite
Atomic fluorescence spectrometry
2016-12-13 released
2017-09-01 implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Foreword
GB/T 5195 is divided into 12 parts.
- Part 1. Determination of fluorite content of fluorite;
- Part 2. Determination of fluorite carbonate content;
- Part 3. Determination of mass loss of fluorite at 105 ° C - Weight method;
- Part 4. Determination of fluorite sulfide content - Iodometric method;
- Part 5. Determination of total sulfur content of fluorite - Binary iodine method;
- Part 6. Determination of fluorite content;
- Part 7. Determination of zinc content in fluorite - Atomic absorption spectrometry;
- Part 8. Determination of fluorite silica content;
- Part 9. Determination of fluorite burning reduction - Weight method;
- Part 10. Determination of iron content of fluorite - o - phenanthroline spectrophotometric method;
- Part 11. Determination of manganese content in fluorite - Periodate spectrophotometric method;
Part 12. Determination of arsenic content of fluorite - Atomic fluorescence spectrometry.
This part is part 12 of GB/T 5195.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part is made by China Iron and Steel Industry Association.
This part is headed by the National Steel Standardization Technical Committee (SAC/TC183).
This part of the drafting unit. Shanghai Entry-Exit Inspection and Quarantine Bureau of industrial and raw materials testing technology center, metallurgical industry information standards
Academy.
The main drafters of this part. Liu Shu, Zhu Zhixiu, Zhou Haiming, Min Hong, Xu Jie, Li Chen, Zhang Linlin, Tu Hong, Lu Chunsheng.
Determination of arsenic content in fluorite
Atomic fluorescence spectrometry
WARNING - Personnel using this section should have practical experience in formal laboratory work. This section does not indicate all possible security questions
question. It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.
1 Scope
This part of GB/T 5195 specifies the determination of arsenic by hydride generation-atomic fluorescence spectrometry.
This part applies to the determination of arsenic in fluorite. Determination range (mass fraction). 0.00001% to 0.010%.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
GB/T 6379.1 Accuracy of measurement methods and results (accuracy and precision) - Part 1. General and definitions
GB/T 6379.2 Accuracy of measurement methods and results (accuracy and precision) - Part 2. Determination of standard measurement methods
The basic method of sex and reproducibility
GB/T 6682 Analytical laboratory water specifications and test methods
Representation and Judgment of Numerical Correction Rule and Limit Value of GB/T 8170
GB/T 12806 laboratory glass instrument single standard line capacity bottle
GB/T 12807 Laboratory glass instruments - Index pipettes
GB/T 12808 Laboratory glass instruments Single line suction pipette
GB/T 21191 atomic fluorescence spectrometer
GB/T 22564 fluorite sampling and sample preparation
3 principle
The sample was dissolved in nitric acid and perchloric acid. In the dilute hydrochloric acid medium, the thiourea-ascorbic acid mixed solution was added to reduce arsenic (Ⅴ) to arsenic (Ⅲ).
In the hydride generator, arsenic is reduced to hydride by potassium borohydride, introduced from argon into a quartz furnace atomizer, on an atomic fluorescence spectrometer
Measure the fluorescence intensity of arsenic. The content of arsenic was calculated according to the standard curve method.
4 reagent
Unless otherwise specified, use only analytical pure reagents, water for deionized water or comparable purity of water, shall comply with GB/T 6682 secondary water
Regulations.
4.1 Potassium borohydride.
4.2 Sodium hydroxide.
4.3 Thiourea.
4.4 ascorbic acid.
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