World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Journal of Physical and Chemical Reference Data : Physical-Chemical Property Data for Dibenzo-p-dioxin (DD), Dibenzofuran (DF), and Chlorinated DD/Fs: A Critical Review and Recommended Values

By Annika Åberg; Matthew MacLeod and Karin Wiberg

Description: Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are of global concern due to their persistence, their tendency to bioaccumulate, and their extremely high toxicity. The fate of the PCDD/Fs in the environment is largely determined by their physical-chemical properties, such as solubility in water (SW, mol m−3), solubility in octanol (SO, mol m−3), and vapor pressure (P, Pa). It is not unusual that the range of reported values for a given property varies over several orders of magnitude, especially for the highly chlorinated congeners, and consequently, it is a challenge to select physical-chemical property data from the literature for use in chemical fate and risk assessments. In the current study, physical-chemical property data [P, SW, SO, Henry’s law constant (H), partitioning coefficients between octanol-water (KOW) and octanol-air (KOA)] for 15 DDs and 17 DFs at 293–299 K are compiled from the literature and evaluated to select literature derived values that are then adjusted to conform to thermodynamic constraints using a least-squares adjustment procedure. We also present an analysis of available data on internal energies of phase change (ΔUA, ΔUW, ΔUO, ΔUOW, ΔUAW, ΔUOA) at 298 K, which describe the temperature dependence of the partitioning properties. The final adjusted values (FAVs) derived from this study are recommended as physical-chemical property data for PCDD/Fs for use in environmental fate modeling. The FAVs for internal energies of phase change can be used as a first approximation for estimating properties at temperatures other than 298 K.


Click To View

Additional Books

  • Journal of Applied Physics : Transitions... Volume Issue : November 2008 (by )
  • Physics of Plasmas : Demonstration of de... Volume Issue : November 2008 (by )
  • Physics of Plasmas : Geodesic acoustic m... Volume Issue : November 2008 (by )
  • Biblioteca Hispanica : the Nature of the... (by )
  • Journal of Applied Physics : Optical emi... Volume Issue : November 2008 (by )
  • Review of Scientific Instruments : Devel... Volume Issue : December 2008 (by )
  • The Journal of Chemical Physics : Equili... Volume Issue : November 2008 (by )
  • Physics of Plasmas : Instability of wave... Volume Issue : November 2008 (by )
  • Physics of Fluids : Stability of a pair ... Volume Issue : September 2008 (by )
  • Physics of Fluids : Modeling inertial pa... Volume Issue : September 2008 (by )
  • Journal of Mathematical Physics : Unitar... Volume Issue : October 2008 (by )
  • Biblioteca Hispanica : Mechanical Applie... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.