Bestrijdingsmiddelen in oppervlaktewater van de Hogeveense Polder (1989/'90) 711001008

Bestrijdingsmiddelen in oppervlaktewater van de Hogeveense Polder (1989/'90)

[ Pesticides in surface water from the "Hogeveense Polder" (1989/'90) ]

Baumann RA, Luttik R, Gerritsen R

46 p in Dutch 1991

RIVM Rapport 711001008

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Toon Nederlands

English Abstract
On six sites in the "Hogeveense Polder", an area used for bulbculture situated west of Lisse, samples of surface water have been taken monthly during the period august 1989-january 1990. These samples were investigated for the presence of 67 pesticides and related substances. A total of 18 compounds was found in one or more samples. One compound, 2-aminobenzimidazole, could not be evaluated ecotoxicologically due to lack of data. Indicative Maximum Acceptable Risk Levels (MAR's) have been exceeded one or several times for 7 of the 18 compounds viz. aldrin, carbendazim, diazinon, 1,3-dichloropropene, endrin, heptachlor and malathion. For 6 out of 7 (except 1,3-dichloropropene) the indicative MAR was exceeded in all cases that the compound was present in a sample. The values "kwaliteitsdoelstelling 2000" given in the "Derde Nota Waterhuishouding" have been exceeded for 5 compounds viz. carbendazim, diazinon, 1,3-dichloropropene, gamma-HCH and malathion. For carbendazim, diazinon and malathion this value was exceeded in all cases that the compound was present in a sample.

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