Langhals, Heinz (1990): A Simple, Quick, and Precise Procedure for the Determination of Water in Organic Solvents. In: Analytical Letters, Vol. 23, Nr. 12: S. 2243-2258




A procedure for the UV/VIS-spectroscopic determination of water by the use of a solvatochromic pyridiniumphenolate betaine is given. The water content of organic solvents is calculated by a two parameter equation from λmax of the dye. A typical, detection limit is of the order of 1 mg in 1 ml solvent for routine spectrometers. The parameters for the determination of water are given for a number of commonly used solvents.