GB/T 7731.2-2007
Ferrotungsten-Determination of manganese content-The periodate spectrophotometric method and the flame atomic absorption spectrometric method (English Version)

Standard No.

GB/T 7731.2-2007

Language

Chinese, Available in English version

Release Date

2007

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 7731.2-2007

Replace

GB/T 7731.16-1999 GB/T 7731.2-1987

Scope

WARNING - Personnel using this section should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with relevant national regulations. This part of GB/T 7731 specifies the determination of manganese content by periodate spectrophotometry and flame atomic absorption spectrometry. This section applies to the determination of manganese content in ferrotungsten, including periodate spectrophotometry and flame atomic absorption spectrometry. Measuring range (mass fraction): 0.05% to 0.70%.

GB/T 7731.2-2007 Referenced Document

• GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis*， 2015-09-11 Update

GB/T 7731.2-2007 history

• 2007 GB/T 7731.2-2007 Ferrotungsten-Determination of manganese content-The periodate spectrophotometric method and the flame atomic absorption spectrometric method
• 1987 GB/T 7731.2-1987 Methods for chemical analysis of ferrotungsten--The sodium periodate photometric method for the determination of manganese content

GB/T 7731.2-2007 Ferrotungsten-Determination of manganese content-The periodate spectrophotometric method and the flame atomic absorption spectrometric method has been changed from GB/T 7731.16-1999 Methods for chemical analysis of ferrotungsten-The flame atomic absorption spectrometric method for the determination of manganese content.

GB/T 7731.2-2007 -All Parts