University of North Florida
Browse the Citations

Contact Info

Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Website: @unf

View Stuart Chalk's profile on LinkedIn

Organic compound

Classification: Organic compound -> propyl acetate

Citations 1

"Determination Of Water By Flow Injection Analysis With The Karl Fischer Reagent. Minimization Of Effects Caused By Differences In Physical Properties Of The Samples"
Anal. Chim. Acta 1984 Volume 162, Issue 1 Pages 9-18
Ingrid Nordin-Andersson, Ove Åström and Anders Cedergren

Abstract: Means for overcoming problems arising from large variations in calibration graphs for different types of sample in this method (Kagevall et al., Anal. Abstr., 1982, 43, 1E23) are discussed. The samples analyzed were propan-2-ol, isopropyl acetate, propyl acetate and methanol, and a modified Karl Fischer reagent (containing 4.57 g of iodine, 50 g of SO2 and 80 mL of pyridine, diluted to 1 l with methanol and adjusted to be 6 mM in iodine before use) was used as carrier solution. The best results were obtained by use of a spectrophotometric detector that minimized refractive-index effects, together with peak-area measurements. A single-line arrangement, having a coil reactor, in conjunction with a high flow rate of reagent, was also preferred. Under these conditions, a sample containing 0.1% of water could be analyzed with a coefficient of variation of ~2%.
Water Karl Fischer analysis Spectrophotometry Refractive index