T/HNNMIA 78-2023 Active Group standards

T/HNNMIA 78-2023 Determination of Gallium Content in Iron Ore by Inductively Coupled Plasma Mass Spectrometry

Publish Date: 2023-12-29 Implement Date: 2023-12-31 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 78-2023

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Chemical elements

Publish Date: 2023-12-29

Implement Date: 2023-12-31

Scope

Main technical content: This document describes the method of determining the gallium content in iron ore by inductively coupled plasma mass spectrometry. The samples are dissolved with nitric acid, hydrofluoric acid, and sulfuric acid, and the insoluble residues are further dissolved by melting with sodium peroxide. The samples are then extracted with water, filtered, and the precipitated material is acidified with nitric acid. The dissolved solution is combined and measured using an inductively coupled plasma mass spectrometer (ICP-MS). The measurement range is 10 g/g to 500 g/g.