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Indoor exposure to Pyrethroid insecticides

: Berger-Preiß, E.; Preiß, A.; Levsen, K.

Institute of Public Health, Tokyo:
INDOOR Air '96. 7th International Conference on Indoor Air Quality and Climate 1996. Proceedings. Vol. 1
Nagoya, 1996
International Conference on Indoor Air Quality and Climate <7, 1996, Nagoya>
Conference Paper
Fraunhofer ITEM ()

The contamination of rooms after application of pyrethroid insecticides was investigated in this study. Three different formulations containing deltamethrin, permethrin, piperonylbutoxide and pyrethrins were sprayed in a model house consisting of ten identical furnished rooms and their concentration monitored on surfaces, in house dust and airborne dust over a period of two years. The concentrations of permethrin and deltamethrin decreased very slowly during this period. After 70 weeks, permethrin appied as a solvent-based emulsion was found in house dust in concentrations of -200µ/g, and deltamethrin applied as an aqueous suspension in concentrations of -5µg/g. Decontamination of the rooms using a household cleanser substantially reduced the pyrethroid concentrations.