NDLI: Evaluation of the risk to groundwater after treating logs with cypermethrin

Content Provider	Springer Nature Link
Author	Dousse, Dimitri Alencastro, Luiz Felippe Grandjean, Dominique Jenni, Robert Zwahlen, François
Copyright Year	2014
Abstract	In order to protect conifer logs against attacks from the striped ambrosia beetle (Trypodendron lineatum) during spring in Swiss forests, logs are treated with the insecticide cypermethrin. Rainfall can cause the insecticide to leach into the ground, potentially threatening the groundwater quality. Forest groundwater is widely used for drinking water, which means that any contaminants within it should be avoided. This study assesses the risk of groundwater contamination in field conditions. The two study areas are located on unconsolidated sediments (Censières, or CS) and on karstic rocks (Grand Bochat, or GB). An analytical method was developed to determine the concentration of cypermethrin and its degradation products 3-PBA and DCVA in water samples. Intensive rainfall was simulated in order to mimic a situation that threatens groundwater. The study’s results show that, when treated according to the manufacturer’s instructions, a certain amount of insecticide was leached during the first rainfall event (2.2 g or 4.4 % of the applied cypermethrin). This leaching threatens groundwater quality, but can be avoided by decreasing the pesticide amount applied while maintaining a satisfactory protection. The insecticide amount that reached the groundwater was very low and was related to simulated rainfall, not natural rainfall. In Censières, only one groundwater sample presented a cypermethrin concentration (4 μg/l). In Grand Bochat, after a simulated rainfall of 36 mm, 3.3 % of the insecticide (5 g) was leached and 0.05 % of the total applied insecticide amount (corresponding to 1.5 % of the leached insecticide) reached the groundwater under the epikarst layer.
Starting Page	3275
Ending Page	3284
Page Count	10
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	73
Issue Number	7
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-09-11
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cypermethrin Logs Insecticide treatment Groundwater contamination Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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