title: Determination of phosphorus in processed cheese: collaborative study.
abstract: A second interlaboratory collaborative study of the determination of phosphorus in processed cheese products by the molybdenum blue method verifies that this method is prone to producing a laboratory-induced systematic error. It would be useless to continue to make minor modifications in the details of the method, which will improve only the within-laboratory precision, until an accuracy control of the final measurement step is incorporated into the method.
mesh_terms: D002611:Cheese / Q000032:analysis*; D008982:Molybdenum / Q000032:analysis; D010758:Phosphorus / Q000032:analysis*; D013053:Spectrophotometry; D013055:Spectrophotometry, Infrared
chemical_list: D010758:Phosphorus; C017541:molybdenum blue; D008982:Molybdenum