title: An evaluation of in situ microcosms for validating aquatic fate and transport models.
abstract: The fates of two compounds, 2,4 Dichlorophenoxy Acetic Acid Butoxyethyl Ester (2,4-DBEE) and 1,4 Dichlorobenzene (1,4-DCB), were examined in in situ microcosms placed in a pond and compared with the fates in the pond itself. Results also were compared with predictions of an aquatic fate and transport model (EXAMS). Decay rates of 2,4-DBEE were not significantly different among the microcosms, pond and model predictions. The decay rate of 1,4-DCB in the microcosms was significantly lower than the rate for the pond, and lower than the rate predicted by the model. The low volatility of 1,4-DCB in the microcosms is attributed primarily to lack of water surface turbulence in the microcosms.
authors.affiliation: Idaho National Engineering Laboratory, EG & G Idaho, Inc, P.O. Box 1625, 83415, Idaho Falls, ID, USA.
authors.forename: C S
authors.initials: CS
authors.lastname: Staley
authors.forename: M J
authors.initials: MJ
authors.lastname: Case