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Memory Effect of Silver and Aqua Regia by their Permeation into Microwave Digestion Vessels  

Cho, Sung-Ill (Korea Research Institute of Chemical Technology)
Kim, Young-Sang (Korea Research Institute of Chemical Technology)
Lee, Sueg-Geun (Korea Research Institute of Chemical Technology)
Publication Information
Analytical Science and Technology / v.16, no.3, 2003 , pp. 212-217 More about this Journal
Abstract
The memory effect of silver and aqua regia in the vessel by their permeation was studied during the microwave digestion of samples under the operating conditions of high temperature and pressure. The extent of permeation in vessels with the solution containing silver 5 mg has been shown to be $0.97{\mu}g/mL$ for the digestion of $HNO_3$ solution and $0.47{\mu}g/mL$ for the digestion of oil sample under condition of MDS 180T program ($180^{\circ}C$, 220 psi).
Keywords
memory effect; microwave digestion; permeation; aqua regia; silver;
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