GB/T 223.14-2000 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content (English Version)
This standard specifies the method for the determination of vanadium content by extraction photometry with tantalum reagent. This standard applies to the determination of 0.0050% (m/m) to 0.50% (m/m) vanadium content in steel and alloys.
GB/T 223.14-2000 history
2000GB/T 223.14-2000 Methods for chemical analysis of iron,steel and alloy The N-benzoy-N-phenylhydroxylamine extraction photometric method for the determination of vanadium content