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GB/T 5195.12-2025 English PDF

GB/T 5195.12: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 5195.12-2025RFQ ASK 3 days Methods for chemical analysis of fluorspar - Part 12: Determination of arsenic content Valid
GB/T 5195.12-2016170 Add to Cart Auto, < 3 mins Fluorite - Determination of arsenic content - Atomic fluorescence spectrometry Valid


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Older Standard (superseded by this standard): GB/T 5195.12-2016, GB/T 5195.19-2018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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