Determination of Tin in Canned Foods by X-Ray Fluorescence Spectrometry

摘要: Wavelength-dispersive X-ray fluorescence spectrometry following a simple pretreatment was developed to determine levels of dissolved tin in canned foods. Sample syrup or homogenate solution fruit (meat) freeze-dried and diluted with the same weight cellulose powder. The mixed powder then quickly formed into pellet for measurements. This analytical method (detection limit, 5 ppm) used several kinds foods from present markets. results indicated that high concentrations (100-300 were cans many fruit, relationship observed between concentration length time after manufacture. After can opened, amount rapidly increased. These are consistent those Horio et al., which suggests issue dissolving has not been adequately addressed, despite their previous warning.