An in-depth review of the recent contribution to this journal by Gustafson and Dickhut  prompts us to share our concerns regarding some of their conclusions. The paper presents data comparing three techniques for determining aqueous concentrations of freely dissolved polycyclic aromatic hydrocarbons (PAHs) gas sparging, lipid-containing semipermeable membrane devices (SPMDs) of the U.S. Geological Survey (USGS) design, and filtration followed by sorption using XAD-2 resin. Space limitations force us to limit our comments to problems resulting from an apparent lack of understanding of how SPMDs function. Several recent publications [2–13] have described the theoretical and practical considerations of SPMD usage. Gustafson and Dickhut fail to cite any papers describing SPMDs published after 1992, even though some 18 papers have been published in American and European journals since then and several SPMD studies have been presented at many major meetings.
Additional publication details
|Publication Subtype||Journal Article|
|Title||Validity of using semipermeable membrane devices for determining aqueous concentrations of freely dissolved PAHs|
|Series title||Environmental Toxicology and Chemistry|
|Contributing office(s)||Columbia Environmental Research Center|