This standard is applicable to biotite granite, rhyolite, granodiorite, quartz hornblend andesite, olivine basalt, gabbro, trachyandesite, nexia syenite, sandstone, shale and other silica with similar composition Determination of phosphorus pentoxide in salt rocks. Measuring range: phosphorous vanadium molybdenum yellow photometric method, 0.2% to 10% phosphorus pentoxide. Phosphorus molybdenum blue photometry, 0.05% to 2% phosphorus pentoxide. This standard complies with the provisions of GB/T14505.
GB/T 14506.9-1993 history
2010GB/T 14506.9-2010 Methods for chemical analysis of silicate rocks.Part 9:Determination of phosphorus pentoxide content
1993GB/T 14506.9-1993 Sillicate rocks. Determination of phosphorus pentoxide