Determination of viscosity with an open-closed flow-injection system.
A flow-injection configuration for the determination of the viscosity of water-miscible samples is proposed. The method is based on the use of an open-closed flow-injection system involving a trapped sample (carrier) and injection of a dye plug. The behaviour of the plug is monitored photometrically by a detector included in the circuit. The parameters of the multipeak recording obtained are related to the viscosity, which can be determined in the range 1-28 cp with an r.s.d. of about +/- 1 %.
Rios
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A
Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Córdoba, Spain.
De Castro
M D
MD
Valcarcel
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M