Halogenated methyl-phenyl ethers (anisoles) in the environment: Determination of vapor pressures, aqueous solubilities, Henry's law constants, and gas/water- (K gw), n-octanol/water- (K ow) and gas/n-octanol (K go) partition coefficients
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Halogenated methyl-phenyl ethers (methoxybenzenes, anisoles) are ubiquitous organics in the environment although they are not produced in industrial quantities. Modelling the fate of organic pollutants such as halogenated anisoles requires a knowledge of the fundamental physico-chemical properties of these compounds. The isomer-specific separation and detection of 60 of the 134 possible congeners allowing an environmental fingerprinting are reported in this study. The vapor pressure\(p^0 _L \) of more than 60 and further physico-chemical properties of 26 available congeners are given. Vapor pressures \(p^0 _L \) , water solubilities \(S_W ^L \) , and n-octanol/water partition coefficients K ow were determined by capillary HR-GC (High Resolution Gas Chromatography) on a non-polar phase and by RP-HPLC (Reversed Phase High Performance Liquid Chromatography) on a C18 phase with chlorobenzenes as reference standards. From these experimental data the Henry's law constants H, and the gas/water K gw and gas/n-octanol K go partition coefficients were calculated. We found that vapor pressures, water solubilities, and n-octanol/water partition coefficients of the halogenated anisoles are close to those of the chlorobenzenes. A similar environmental fate of both groups can, therefore, be predicted.
KeywordsPartition Coefficient Chlorobenzene Anisole Relative Retention Time Atmos Environ
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