T/GZNFS 001.4-2019
Methods for Chemical Analysis of Tungsten Slag Part 4: Determination of Phosphorus Content (English Version)

Standard No.

T/GZNFS 001.4-2019

Language

Chinese, Available in English version

Release Date

2019

Published By

Group Standards of the People's Republic of China

Latest

T/GZNFS 001.4-2019

Scope

After the sample is melted and leached by alkali, beryllium sulfate is used as a carrier in an ammonia solution to co-precipitate phosphorus and beryllium hydroxide to separate them from other elements. In a nitric acid solution with a certain acidity, ammonium vanadate-ammonium molybdate is used. As a color developer, measure its absorbance at 420nm with a spectrophotometer.

T/GZNFS 001.4-2019 history

• 2019 T/GZNFS 001.4-2019 Methods for Chemical Analysis of Tungsten Slag Part 4: Determination of Phosphorus Content