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Experimental determination of Henry's Law Constant for some dioxins

: Brandsch, R.; Gruber, L.; Santl, H.

Austria, Federal Environmental Agency, Vienna:
Dioxin '93 - Short papers. Organohalogen compounds. Vol.12
Vienna, 1993
ISBN: 3-85457-130-5
International Symposium on Chlorinated Dioxins and Related Compounds (Dioxin) <13, 1993, Vienna>
Fraunhofer ILV ( IVV) ()
chlorinated dibenzodioxin; determination; gas-water partition coefficient; Henry's Law Contant; PCDD; water solubility

In this paper a dynamic method to determine gas-water partition coefficients (K-values), respectively Henry's Law Constants (HLCs), is presented. The K-values, the HLCs and the water solubilities (S) for some lower chlorinated dibenzodioxins (PCDDs) were measured. The values of the gas-water partition coefficients ranged between 8,16 E-4 for 1,2,3,4-TetraCDD up to 2,40 E-3 for 2,7-DiCDD, the Henry's Law Constants from 2,02 Pa m3/mol to 5,96 Pa m3/mol respectively. The guaranteed equilibrium and the verification of the mass balance confirm the high reliability of our results.