Warning: Personnel using this part of GB/T 6730 should have practical experience in formal laboratory work. This section does not address all possible security issues. It is the user's responsibility to take appropriate safety and health measures and ensure compliance with the conditions stipulated in the relevant national laws and regulations. This part of GB/T 6730 specifies the aluminum blue spectrophotometric method for the determination of phosphorus content. This method is applicable to the determination of phosphorus content in natural iron ores, iron concentrates and agglomerates, including sintered products. The presence of arsenic, barium and titanium does not affect the determination results. The measurement range (mass fraction) is 0.003% to 2.00%.
GB/T 6730.18-2006 Referenced Document
GB/T 10322.1 Iron ore sampling and sample preparation methods*, 2023-08-06 Update
GB/T 12808 Laboratory glass instrument single marked line pipette*, 2016-07-01 Update
GB/T 6682 Water for analytical laboratory use.Specification and test methods*, 2008-05-15 Update
GB/T 6730.1 Iron ores.Preparation of predried test samples for chemical analysis*, 2016-02-24 Update
GB/T 6730.18-2006 history
2006GB/T 6730.18-2006 Iron ores. Determination of phosphorus content Molybdenum blue spectrophotometric method
1986GB/T 6730.18-1986 Methods for chemical analysis of iron ores--The n-butyl acetate extraction-molybdenum blue photometric method for the determination of phosphorus content