Bestrijdingsmiddelen in oppervlaktewater van de polder Bleiswijk (1990/'91)
Citations
Altmetric:
Series / Report no.
Open Access
Type
Report
Language
nl
Date
1992-09-30
Research Projects
Organizational Units
Journal Issue
Title
Bestrijdingsmiddelen in oppervlaktewater van de polder Bleiswijk (1990/'91)
Translated Title
Pesticides in surface water in the "polder Bleiswijk" (1990/'91)
Published in
Abstract
On six sites in the "polder Bleiswijk", an area used for glasshouse agriculture situated south-west of Bleiswijk, samples of surface water have been taken monthly during the period May 1990-April 1991. These samples were investigated for the presence of 32 pesticides and related substances, and for cholinesterase inhibition, a sumparameter. A total of 22 compounds was found in one or more samples. Endosulfan-sulphate and gamma-HCH were found in all the water samples that were analysed. Ecologically safe values have been exceeded one or several times for 16 of the 22 compounds. For 12 out of 16 compounds the safe value was exceeded in all cases that the compound was present in a sample. The values "algemene milieukwaliteit" given in the "Derde Nota Waterhuishouding" have been exceeded for 5 compounds viz. aldicarb, dichlorvos, alpha-endosulfan, endosulfan-sulphate and gamma-HCH. For dichlorvos this value was exceeded in all cases that the compound was present in a sample.<br>
Description
Publisher
Rijksinstituut voor Volksgezondheid en Milieu RIVM
Sponsors
HIMH