GB/T 7731.7-2008
Ferrotungsten. Determination of tin content. Phenylfluorone photometric method and inductively coupled plasma-atomic emission spectrometry (English Version)

Standard No.

GB/T 7731.7-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

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

Latest

GB/T 7731.7-2008

Replace

GB/T 7731.7-1987

Scope

WARNING: Personnel applying this standard 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 the conditions stipulated in the relevant national laws and regulations. This part specifies the determination of the amount of tin in iron-tungsten by phenylfluorone photometry and inductively coupled plasma atomic emission spectrometry. This part is applicable to the determination of tin content in iron and tungsten, the determination range (mass fraction): 0.01% ~ 0.12%.

GB/T 7731.7-2008 Referenced Document

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

GB/T 7731.7-2008 history

• 2008 GB/T 7731.7-2008 Ferrotungsten. Determination of tin content. Phenylfluorone photometric method and inductively coupled plasma-atomic emission spectrometry
• 1987 GB/T 7731.7-1987 Methods for chemical analysis of ferrotungsten--The phenylfluorone photometric method for the determination of tin content

GB/T 7731.7-2008 -All Parts