2016YB/T 5315-2016 Determination of phosphorus content in calcium silicon alloys Phosphomolybdenum blue spectrophotometry
2006YB/T 5315-2006 Calcium silicon alloy chemical analysis method Phosphorus molybdenum blue spectrophotometry Determination of phosphorus content
YB/T 5315-2006 Calcium silicon alloy chemical analysis method Phosphorus molybdenum blue spectrophotometry Determination of phosphorus content has been changed from GB/T 4700.4-1998 Methods for chemical analysis of calcium-silicon The phosphomolybdenum blue photometric method for the determination of phosphorus content.