T/HNNMIA 14-2025 Active Group standards

T/HNNMIA 14-2025 Uraninite-type Uranium Ore Determination of Oxide Content by Open-cup Solution with Acid Reagents: Flame Atomic Absorption Spectrometry

Publish Date: 2025-06-23 Implement Date: 2025-06-23 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/HNNMIA 14-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2025-06-23

Implement Date: 2025-06-23

Scope

Main technical content: This document describes the method of determining the content of calcium oxide and magnesium oxide in sandstone-type uranium ores by open-air dissolution of three acids and flame atomic absorption spectrometry. This document is suitable for determining the content of calcium oxide and magnesium oxide in sandstone-type uranium ores. The determination range of CaO (mass fraction): 0.05%~7.00%, MgO (mass fraction): 0.01%~4.00%; the method detection limit of CaO: 0.013%, MgO: 0.003%