GB/T 4702.7-2016
Chromium metal.Determination of nitrogen content.Distillation-nessler reagent spectrophotometric method (English Version)

Standard No.

GB/T 4702.7-2016

Language

Chinese, Available in English version

Release Date

2016

Published By

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

Latest

GB/T 4702.7-2016

Scope

This part of GB/T 4702 specifies the determination of nitrogen content by distillation separation-Nessler reagent spectrophotometry. This part is applicable to the determination of nitrogen content in metallic chromium, the determination range (mass fraction): 0.002% to 0.150%.

GB/T 4702.7-2016 Referenced Document

• GB/T 12806 Laboratory glassware.One-mark volumetric flasks
• GB/T 12807 Laboratory glassware一Graduated pipettes*， 2021-05-21 Update
• GB/T 12808 Laboratory glass instrument single marked line pipette
• GB/T 4010 Ferroallys sampling and preparation of samples for chemical analysis
• GB/T 6682 Water for analytical laboratory use.Specification and test methods
• GB/T 7729 Chemical analysis of metallurgical products—General rule for spectrophotometric methods*， 2021-08-20 Update

GB/T 4702.7-2016 history

• 2016 GB/T 4702.7-2016 Chromium metal.Determination of nitrogen content.Distillation-nessler reagent spectrophotometric method
• 2008 GB/T 4702.4-2008 Chromium metal. Determination of iron content. EDTA titrimetric method and flame atomic absorption spectrometric method
• 1984 GB/T 4702.7-1984 Methods for chemical analysis of chromium metal--The atomic absorption spectrophotometric method for the determination of iron content

GB/T 4702.7-2016 -All Parts