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Extension of the River Water Quality Model no. 1 with the fate of pesticides

Veerle De Schepper UGent, Katrijn Holvoet, Lorenzo Benedetti UGent, Piet Seuntjens UGent and Peter A Vanrolleghem (2012) JOURNAL OF HYDROINFORMATICS. 14(1). p.48-64
abstract
The existing River Water Quality Model No. 1 (RWQM1) was extended with processes determining the fate of non-volatile pesticides in the water phase and sediments. The exchange of pesticides between the water column and the sediment is described by three transport processes: diffusion, sedimentation and resuspension. Burial of sediments is also included. The modified model was used to simulate the concentrations of diuron and chloridazon in the river Nil. A good agreement was found between the simulated pesticide concentrations and measured values resulting from a four-month intensive monitoring campaign. The simulation results indicate that pesticide concentrations in the bulk water are not sensitive to the selected biochemical model parameters. it seems that these concentrations are mainly determined by the imposed upstream concentrations, run-off and direct losses. The high concentrations in the bulk water were not observed in the sediment pore water due to a limited exchange between the water column and the sediment. According to a sensitivity analysis, the observed pesticide concentrations are highly sensitive to the diffusion and sorption coefficients. Therefore, model users should determine these parameters with accuracy in order to reduce the degree of uncertainty in their results.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
river water quality, sediment, pesticide fate, modelling, diuron, chloridazon, SORPTION, COHESIVE SEDIMENT, SEDIMENT TRANSPORT, HERBICIDES, SYSTEMS, CONTAMINANTS, DEGRADATION, MANAGEMENT, EROSION, SURFACE
journal title
JOURNAL OF HYDROINFORMATICS
J. Hydroinform.
volume
14
issue
1
pages
48 - 64
Web of Science type
Article
Web of Science id
000298618300004
JCR category
ENGINEERING, CIVIL
JCR impact factor
1.153 (2012)
JCR rank
42/121 (2012)
JCR quartile
2 (2012)
ISSN
1464-7141
DOI
10.2166/hydro.2011.028
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2135589
handle
http://hdl.handle.net/1854/LU-2135589
date created
2012-06-07 10:25:03
date last changed
2012-06-22 15:12:07
@article{2135589,
  abstract     = {The existing River Water Quality Model No. 1 (RWQM1) was extended with processes determining the fate of non-volatile pesticides in the water phase and sediments. The exchange of pesticides between the water column and the sediment is described by three transport processes: diffusion, sedimentation and resuspension. Burial of sediments is also included. The modified model was used to simulate the concentrations of diuron and chloridazon in the river Nil. A good agreement was found between the simulated pesticide concentrations and measured values resulting from a four-month intensive monitoring campaign. The simulation results indicate that pesticide concentrations in the bulk water are not sensitive to the selected biochemical model parameters. it seems that these concentrations are mainly determined by the imposed upstream concentrations, run-off and direct losses. The high concentrations in the bulk water were not observed in the sediment pore water due to a limited exchange between the water column and the sediment. According to a sensitivity analysis, the observed pesticide concentrations are highly sensitive to the diffusion and sorption coefficients. Therefore, model users should determine these parameters with accuracy in order to reduce the degree of uncertainty in their results.},
  author       = {De Schepper, Veerle and Holvoet, Katrijn and Benedetti, Lorenzo and Seuntjens, Piet and Vanrolleghem, Peter A},
  issn         = {1464-7141},
  journal      = {JOURNAL OF HYDROINFORMATICS},
  keyword      = {river water quality,sediment,pesticide fate,modelling,diuron,chloridazon,SORPTION,COHESIVE SEDIMENT,SEDIMENT TRANSPORT,HERBICIDES,SYSTEMS,CONTAMINANTS,DEGRADATION,MANAGEMENT,EROSION,SURFACE},
  language     = {eng},
  number       = {1},
  pages        = {48--64},
  title        = {Extension of the River Water Quality Model no. 1 with the fate of pesticides},
  url          = {http://dx.doi.org/10.2166/hydro.2011.028},
  volume       = {14},
  year         = {2012},
}

Chicago
De Schepper, Veerle, Katrijn Holvoet, Lorenzo Benedetti, Piet Seuntjens, and Peter A Vanrolleghem. 2012. “Extension of the River Water Quality Model No. 1 with the Fate of Pesticides.” Journal of Hydroinformatics 14 (1): 48–64.
APA
De Schepper, V., Holvoet, K., Benedetti, L., Seuntjens, P., & Vanrolleghem, P. A. (2012). Extension of the River Water Quality Model no. 1 with the fate of pesticides. JOURNAL OF HYDROINFORMATICS, 14(1), 48–64.
Vancouver
1.
De Schepper V, Holvoet K, Benedetti L, Seuntjens P, Vanrolleghem PA. Extension of the River Water Quality Model no. 1 with the fate of pesticides. JOURNAL OF HYDROINFORMATICS. 2012;14(1):48–64.
MLA
De Schepper, Veerle, Katrijn Holvoet, Lorenzo Benedetti, et al. “Extension of the River Water Quality Model No. 1 with the Fate of Pesticides.” JOURNAL OF HYDROINFORMATICS 14.1 (2012): 48–64. Print.