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2631438 
Journal Article 
DEVELOPMENT OF A METHOD FOR THE DETERMINATION OF TIN IN CANNED FRUIT JUICE BY GRAPHITE FURNACE ATOMIC ABSORPTION SPECTROMETRY 
Trandafir, I; Nour, V; Ionica, ME 
2010 
Yes 
Journal of Environmental Protection and Ecology
ISSN: 1311-5065 
11 
1 
49-55 
WOS:000276648900007 
Tin is considered to be a priority contaminant by the Codex Alimentarius Commission. Tin can enter foods either from natural sources, environmental pollution, packaging material or pesticides. Higher concentrations are found in processed food and canned foods. Dissolution of the tinplate depends on the of food matrix, acidity, presence of oxidising reagents, presence of air in the headspace, time and storage temperature. The provisional tolerable weekly intake for tin is 14 mg/kg body weight and recommended maximum permissible levels of tin in food are typically 250 mg/kg for solid foods and 150 mg/kg for beverages. A simple method for the routine determination of tin in canned fruit juices was developed using graphite furnace atomic absorption spectrometry. For the method development experiments it was used an orange juice sample, which was a test material obtained as a result of the participation of our laboratory in a proficiency testing scheme organised by FAPAS, Central Science Laboratory, Sand Hutton, York, United Kingdom. The paper presents the method developed for the determination of tin in canned fruit juices, the results obtained by our laboratory in the proficiency test and the set of validation data performed through precision studies. The determined tin concentration was 122.34 mg/l and the z-score was 0.5. 
tin; fruit juices; graphite furnace atomic absorption spectrometry