GB/T 12690.19-2018 Active National standards

GB/T 12690.19-2018 Chemical analysis methods for non-rare earth impurities of rare earth metals and their oxides—Part 19:Determination of arsenic and mercury contents

Publish Date: 2018-09-17 Implement Date: 2019-06-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 12690.19-2018

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Analysis methods for rare metals and their alloys

ICS Name: Other non-ferrous metals and their alloys

Publish Date: 2018-09-17

Implement Date: 2019-06-01

Pages: 9 pages

Scope

This part of GB/T 12690 specifies the determination methods for arsenic and mercury in rare earth metals and their oxides.
This part is applicable to the determination of arsenic and mercury in rare earth metals and their oxides. It includes two methods: Method 1, inductively coupled plasma mass spectrometry; Method 2, atomic fluorescence. The determination range of Method 1 is 0.0005% to 0.010%; the determination range of Method 2 is: arsenic 0.0005% to 0.010%; mercury 0.000005% to 0.001%. When the determination ranges of Method 1 and Method 2 overlap, Method 2 shall be used as the arbitration method.