Implementation and evaluation of the fluorescent tracer technique in greenhouse exposure studies

Assessment of Exposure for Pesticide Handlers in Agricultural, Residential and Institutional Environments

“…The method has also been used to examine pesticide exposure during greenhouse applications Fenske, 1994a, 1994b). Several laboratories have adopted this method, or have developed similar approaches (Roff, 1994;Archibald et al, 1995;Bierman et al, 1998;Kross et al, 1996). Fluorescent tracer techniques hold the promise of improved accuracy in assessing dermal exposures, as they require no assumptions regarding the distribution of exposure across skin surfaces.…”

Conceptual model for assessment of dermal exposure.

“…Measurement methods based on UV fluorescence of tracer compounds mixed with the contaminant at source [13][14][15][16][17] indirectly measure the mass of the contaminant in the skin contaminant layer. However, fluorescent tracers have the ability to bind with the cell proteins in the stratum corneum and the method is not able to dif- ferentiate between the skin contaminant layer and the stratum corneum.…”

Project to assess current approach and knowledge with a view to develop a Guidance document for pesticide exposure assessment

“…As specific details of the 19 application tasks are not given comparison is made on the basis of the average application rate of 205 g a.s./ha and 1 ha area being treated. Bierman et al 1998. Operators applying propoxur to glasshouse carnations in the Netherlands.…”

“…Also, the application rate of methomyl was not reported. Bierman et al, 1998. In five greenhouses used for carnations, propoxur was applied along with the tracer Tinopal; the rates of application were 50g propoxur/ 1000m 2 (0.5 kg/ha) and 25g Tinopal/ 1000m 2 (0.25 kg/ha).…”