摘要：Analyses of trace metals in some cinnamons are described. The levels of arsenic (as As2O3) were within the limits for other natural food additives normalized by the Federation of Food Additives Associations in Japan. From the comparison of dry incineration procedure with wet combustion one, the former gave better results for the determination of zinc, copper, nickel, iron, manganese, and chromium than the latter, in the detection by means of X-ray fluorescence analyzer. The concentration of each metal studied was changed due to the affection by habitats of numerous cinnamons, especially iron and manganese to significant degree. The levels of heavy metals (as Pb) were not greater than 20ppm, but manganese, for example, was highly contained in cinnamons analyzed.
