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ESTIMATION OF WATER SOLUBILITY AND OCTANOL/WATER PARTITION COEFFICIENT OF HYDROPHOBIC DYES - PART II. REVERSE-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY
Citation:
Hou, M., G. Baughman, AND T. Perenich. ESTIMATION OF WATER SOLUBILITY AND OCTANOL/WATER PARTITION COEFFICIENT OF HYDROPHOBIC DYES - PART II. REVERSE-PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-91/294 (NTIS PB92124330), 1991.
Description:
Capacity factors were determined for 20 disperse and solvent dyes by a high performance liquid chromatographic method using methanol/water and a C-18 reverse-phase column. egression equations are given that establish relationships among capacity factors, water solubilities and octanol/water partition coefficients. he method is easy to apply to commercial dyes with resulting estimations that are accurate to better than one order of magnitude. ossible sources of error are discussed and suggested as implicit in the method when applied to dyes. he regressions are also used to estimate the octanol/water partition coefficients and solubilities for 14 other disperse dyes and for indigo, none of which have been measured previously. he estimated values for all of the dyes correspond to calculated sediment/water partition coefficients and bioconcentration factors, ranging from about 2.3 to 8.5 from 2 to 7 log units, respectively.
