General fugacity-based model to predict the environmental fate of multiple chemical species
Cahill, TM; Cousins, I; Mackay, D
HERO ID
47873
Reference Type
Journal Article
Year
2003
Language
English
PMID
| HERO ID | 47873 |
|---|---|
| In Press | No |
| Year | 2003 |
| Title | General fugacity-based model to predict the environmental fate of multiple chemical species |
| Authors | Cahill, TM; Cousins, I; Mackay, D |
| Journal | Environmental Toxicology and Chemistry |
| Volume | 22 |
| Issue | 3 |
| Page Numbers | 483-493 |
| Abstract | A general multimedia environmental fate model is presented that is capable of simulating the fate of up to four interconverting chemical species. It is an extension of the existing equilibrium criterion (EQC) fugacity model, which is limited to single-species assessments. It is suggested that multispecies chemical assessments are warranted when a degradation product of a released chemical is either more toxic or more persistent than the parent chemical or where there is cycling between species, as occurs with association, disassociation, or ionization. The model is illustratively applied to three chemicals, namely chlorpyrifos, pentachlorophenol, and perfluorooctane sulfonate, for which multispecies assessments are advisable. The model results compare favorably with field data for chlorpyrifos and pentachlorophenol, while the perfluorooctane sulfonate simulation is more speculative due to uncertainty in input parameters and the paucity of field data to validate the predictions. The model thus provides a tool for assessing the environmental fate and behavior of a group of chemicals that hitherto have not been addressed by evaluative models such as EQC. |
| Doi | 10.1897/1551-5028(2003)022<0483:GFBMTP>2.0.CO;2 |
| Pmid | 12627633 |
| Wosid | WOS:000181089000004 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | ECRIB.Environ. Toxicol. Chem. 22: 483-493. |
| Is Public | Yes |
| Language Text | English |
| Keyword | multispecies model; environmental fate; chlorpyrifos; pentachlorophenol; perfluorooctane sulfonate |
| Is Qa | No |