Rapid Combustion Method for Determination of Phosphorus in Petroleum Products

Pesticide Residues, Total Phosphorus Technique for Determining Organophosphorus Pesticide Residues Using Schöniger Flask Combustion

“…Cool, and determine absorbance at 820 µ in a colorimeter or spectrophotometer, using water to set the instrument. Discussion Gedansky et al (12) clearly demonstrated the necessity for an oxidizing and fusing medium in the combustion zone to achieve high recoveries of phosphorus by the combustion technique. The use of anhydrous sodium carbonate as recommended by these workers proved inconvenient for the techniques used in this study; therefore, an alternative medium was developed in which the combustion paper was dipped into an aqueous alcoholic sodium hydroxide solution prior to application of the sam- pie.…”

Rapid Fusion Determination of Phosphorus in Gasoline

“…Boron values reported in the literature show good reproducibility of values even when ashed in electric muffle furnacese.g., the data of Hatcher (3). He compares boron analyses by wet and dry combustion, with much higher values obtained for dry than for wet combustion.…”