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The dynamic water-sediment system: results from an intensive pesticide monitoring campaign

K. Holvoet, Piet Seuntjens UGent, R. Mannaerts, V. De Schepper and P.A. Vanrolleghem (2007) WATER SCIENCE AND TECHNOLOGY. 55(3). p.177-182
abstract
To gain insight into the dynamics of pesticides in the different compartments of a river system, an intensive monitoring campaign was set up. An extensive dataset is useful when planning to model the fate of pesticides in river systems. In this study we focus on the Nil, a small, hilly basin situated in the central part of Belgium. Two automatic samplers were placed in the river basin, i.e., one at the mouth and one upstream, taking composite samples of water and suspended solids. Undisturbed sediment samples were taken by means of a macro-core and immediately frozen with CO2-ice. The samples were sliced and analysed for pesticides in pore water and on sediment. The results of the study revealed the dynamics of the different compartments of a river system. The water compartment showed hourly variations in pesticide peak concentrations, regularly exceeding the standards. The amount of pesticides transported by suspended solids increased after a rainfall event. The concentration of pesticides in pore water, measured on a monthly basis, followed the trends of the water compartment remarkably well, but in a significantly lower concentration. These observations may be explained by combined diffusion, biodegradation and chemical reactions occurring in the water column and the sediment. Further insight into the importance of each of these processes can be gained by dynamic modelling, an approach that is currently being followed.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
keyword
pesticides, monitoring campaign, risk assessment, river water quality, RIVER, SURFACE
in
WATER SCIENCE AND TECHNOLOGY
Water Sci. Technol.
volume
55
issue
3
pages
6 pages
publisher
IWA Publishing
place of publication
London
conference name
9th IWA International Conference on Diffuse Pollution
conference location
Johannesburg, SOUTH AFRICA
conference start
2005-08-09
conference end
2005-09-12
Web of Science type
Proceedings Paper
Web of Science id
000245786100023
JCR category
WATER RESOURCES
JCR impact factor
1.24 (2007)
JCR rank
19/58 (2007)
JCR quartile
2 (2007)
ISSN
0273-1223
DOI
10.2166/wst.2007.086
language
English
UGent publication?
yes
classification
P1
id
750066
handle
http://hdl.handle.net/1854/LU-750066
date created
2009-09-18 13:11:42
date last changed
2010-01-12 14:55:19
@inproceedings{750066,
  abstract     = {To gain insight into the dynamics of pesticides in the different compartments of a river system, an intensive monitoring campaign was set up. An extensive dataset is useful when planning to model the fate of pesticides in river systems. In this study we focus on the Nil, a small, hilly basin situated in the central part of Belgium. Two automatic samplers were placed in the river basin, i.e., one at the mouth and one upstream, taking composite samples of water and suspended solids. Undisturbed sediment samples were taken by means of a macro-core and immediately frozen with CO2-ice. The samples were sliced and analysed for pesticides in pore water and on sediment. The results of the study revealed the dynamics of the different compartments of a river system. The water compartment showed hourly variations in pesticide peak concentrations, regularly exceeding the standards. The amount of pesticides transported by suspended solids increased after a rainfall event. The concentration of pesticides in pore water, measured on a monthly basis, followed the trends of the water compartment remarkably well, but in a significantly lower concentration. These observations may be explained by combined diffusion, biodegradation and chemical reactions occurring in the water column and the sediment. Further insight into the importance of each of these processes can be gained by dynamic modelling, an approach that is currently being followed.},
  author       = {Holvoet, K. and Seuntjens, Piet and Mannaerts, R. and De Schepper, V. and Vanrolleghem, P.A.},
  booktitle    = {WATER SCIENCE AND TECHNOLOGY},
  issn         = {0273-1223},
  keyword      = {pesticides,monitoring campaign,risk assessment,river water quality,RIVER,SURFACE},
  language     = {eng},
  location     = {Johannesburg, SOUTH AFRICA},
  number       = {3},
  pages        = {177--182},
  publisher    = {IWA Publishing},
  title        = {The dynamic water-sediment system: results from an intensive pesticide monitoring campaign},
  url          = {http://dx.doi.org/10.2166/wst.2007.086},
  volume       = {55},
  year         = {2007},
}

Chicago
Holvoet, K., Piet Seuntjens, R. Mannaerts, V. De Schepper, and P.A. Vanrolleghem. 2007. “The Dynamic Water-sediment System: Results from an Intensive Pesticide Monitoring Campaign.” In Water Science and Technology, 55:177–182. London: IWA Publishing.
APA
Holvoet, K., Seuntjens, P., Mannaerts, R., De Schepper, V., & Vanrolleghem, P. A. (2007). The dynamic water-sediment system: results from an intensive pesticide monitoring campaign. WATER SCIENCE AND TECHNOLOGY (Vol. 55, pp. 177–182). Presented at the 9th IWA International Conference on Diffuse Pollution, London: IWA Publishing.
Vancouver
1.
Holvoet K, Seuntjens P, Mannaerts R, De Schepper V, Vanrolleghem PA. The dynamic water-sediment system: results from an intensive pesticide monitoring campaign. WATER SCIENCE AND TECHNOLOGY. London: IWA Publishing; 2007. p. 177–82.
MLA
Holvoet, K., Piet Seuntjens, R. Mannaerts, et al. “The Dynamic Water-sediment System: Results from an Intensive Pesticide Monitoring Campaign.” Water Science and Technology. Vol. 55. London: IWA Publishing, 2007. 177–182. Print.