รายละเอียดเอกสาร

This method describes a procedure for the quantification of phosphorus in oil using inductively coupled plasma optical emission spectroscopy (ICP-OES). Depending on the dilution solvent, nearly all forms of vegetable oils may be analyzed—from crude oil to degummed, refined, bleached, deodorized, and hardened—and nearly all types of lecithins and phosphatides. This procedure is suitable only when the elements are present in a solubilized form. When they are present as fine particles such as bleaching earth, catalysts, or rust, ICP-OES analysis results in poor recovery due to nebulization and atomization problems. The only suitable non-ashing direct method for these samples is graphite furnace AAS.