GB/T 14465-1993
Active
T/CGIA 013-2019
Active
Group standards
T/CGIA 013-2019 Determination of Silicon Content in Graphene Materials - Silicon Molybdenum Blue Spectrophotometry
T/CGIA 013-2019 Determination of Silicon Content in Graphene Materials - Silicon Molybdenum Blue Spectrophotometry
Price:
$ 20.00
Basic Information
Standard Code:
T/CGIA 013-2019
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Basic standards and general methods
ICS Name:
Physics, Chemistry
Publish Date:
2019-07-25
Implement Date:
2019-07-26
Scope
Scope: This standard specifies the method for determining the silicon content in graphene materials (powders and slurries). This standard is applicable to the determination of silicon content in graphene materials. The measurement range is 0.001% to 0.045%. Main technical content: The sample is digested with a mixed acid composed of a certain proportion of concentrated nitric acid, concentrated sulfuric acid, and concentrated perchloric acid. In a weakly acidic medium (acidity 0.05 mol/L to 0.20 mol/L), silicon forms a yellow silicon-molybdate complex with molybdate. In the presence of tartaric acid, it is reduced to silicon-molybdate blue by a reducing agent, and its absorbance is measured at a wavelength of 815 nm using a spectrophotometer.
Development Information
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