The applicability of ICP-AES in the analysis of phosphorus, iron, calcium, magnesium, zinc, manganese and copper in the pet food samples.

Abstract

A multielement determination of phosphorus, iron, calcium, magnesium, zinc, manganese and copper in pet food samples was carried out by inductively coupled plasma atomic emission spectrometry (ICP-AES, ) compared with the old analytical methods as atomic absorption spectrometry visible absorption method and titration method. Pet food samples(10g) were ignited in furnace at 500C for about 5hours. Each residue was dissolved in a 1%HCl solution, and was subjected to multielement analysis by ICP-AES. As a result,7 elements of 20 pet food samples were determined over wide concentration range from % to ppm level. On the comparative study of ICP-AES and old analytical methods, analytical results obtained by this ICP-AES agreed with those obtained by old analytical methods. The applicability of the mineral analysis by ICP-AES in pet food samples was confirmed.