Comment on “Dependence of persistence and long-range transport potential on gas-particle partitioning in multimedia models”
In their article, Gotz et al. [Environ. Sci. Technol., 2008, 42, 3690-3696] use three different multimedia contaminant fate models to analyze the impact of implementing a two-particle-size polyparameter linear free energy relationship approach on metrics of persistence and long-range transport, and...
| Main Author: | |
|---|---|
| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
viXra
2013
|
| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.367.3372 http://vixra.org/pdf/1304.0007v1.pdf |
| Summary: | In their article, Gotz et al. [Environ. Sci. Technol., 2008, 42, 3690-3696] use three different multimedia contaminant fate models to analyze the impact of implementing a two-particle-size polyparameter linear free energy relationship approach on metrics of persistence and long-range transport, and on calculated concentrations of semivolatile organic chemicals in the Arctic. One of the twelve compounds investigated is 2,4-D (2,4-dichlorophenoxyacetic acid), which is effectively entirely dissociated in aqueous systems. The authors do not appear to have considered the ionization of 2,4-D during their multimedia modeling exercises, particularly the effects of ionization on octanol-water and air-water partitioning behavior. Consequently, all modeling results presented for 2,4-D appear to be in significant error and should not be employed for risk assessment purposes. |
|---|