Journal
FOOD ADDITIVES AND CONTAMINANTS PART A-CHEMISTRY ANALYSIS CONTROL EXPOSURE & RISK ASSESSMENT
Volume 31, Issue 7, Pages 1284-1290Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19440049.2014.907505
Keywords
metals analysis - ICP/MS; packaging; packaging additives; migration; food simulants
Funding
- National Natural Science Foundation of China [21277085, 21277061]
- National Science and Technology Support Program [2011BAK10B05-03]
- Science and Technology Research Project of Shanxi Province [20120313030-3]
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An analytical method based on ICP-MS was developed for the determination of Ti in food simulants (3% (w/v) aqueous acetic acid and 50% (v/v) aqueous ethanol). The method was used to determine the migration of Ti from nano-TiO2-PE films used for food packaging into food simulants under different temperature and migration time conditions. The maximum migration amounts into 3% (w/v) aqueous acetic acid were 1.4 +/- 0.02, 6.3 +/- 0.5 and 12.1 +/- 0.2 mu g kg(-1) at 25, 70 and 100 degrees C, respectively, while into 50% (v/v) aqueous ethanol, the maximum migration amounts were 0.5 +/- 0.1, 0.6 +/- 0.03 and 2.1 +/- 0.1 mu g kg(-1) at 25, 70 and 100 degrees C, respectively. Increasing the additive content in the film promoted migration of nanoparticles. The results indicated that the migration of nanoparticles might occur via dissolution from the surface and cut edges of the solid phase (film) into the liquid phase (food simulant).
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