Journal
ANALYTICAL CHEMISTRY
Volume 81, Issue 11, Pages 4581-4584Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ac9006733
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Funding
- National Science and Engineering Council of Canada (NSERC) [STPSC 35701107]
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A prototype for solid sample preparation on centrifugal microfluidic devices has been designed and characterized. The system uses NdFeB magnets in both the centrifugal device and a fixed base. As the centrifugal device rotates, the magnets move and spin in their chambers creating a pulverizing mechanical motion. This technique was successfully applied to the dissolution of potassium ferricyanide (K-3[Fe(CN)(6)]), a hard colored crystal. A 0.10 g sample was completely dissolved in 3 s in 1.0 mL of water while rotating at 1000 rpm. This is a 300-fold improvement over static dissolution.
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