2010年10月6日 星期三

食品安全-23, 不沾鍋化學塗層


Three instrumental techniques are used for the analysis of  non-sticky pan: IR spectroscopy, EGA-MS and EGA-GC-MS, for different layers of the coating material.
Many types of chemical are found from these coating materials: long-chain hydrocarbons, PTFE and PFOA (Perfluoro-organic Acids). These types represent a series of compounds.
It is found that these coating materials can be easily scratched off form the surface of pan with minor physical force.
These materials can also be volatilized at different temperatures, respectively. The volatilization can occur even below 200 degree centigrade.

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