Pesticide cloth, following dermal

The dermal exposure patches were made of 9-ply gauze (2,4,5-T study) or denim (2,4-D study) and were attached with safety pins to workers clothing by research team members wearing clean gloves. Following the spray activities, the patches were placed in individual specimen bottles and transported to the laboratory for analysis. In the 2,4,5-T study, all six patches from each individual were pooled before analyses were made in the 2,4-D studies the patches were kept separate and analyzed individually. Using a photograph of the worker in his spray attire and the amounts of pesticide found on the patches, we estimated total dermal exposure for each worker (Durham and Wolfe, 1962). 

The UK-POEM database is based on a review of the data available on the exposure of pesticide spray operators (in the UK). The review indicated that several factors determined the dose absorbed by a spray operator. These included the following the volume of external contamination, the extent to which this external contamination penetrated clothing to reach the skin and the rate at which the chemical came into direct contact with the skin surface and was absorbed (JMP, 1986 Martin, 1990). These various independent factors were assumed, with the exception of dermal absorption, to be of a sufficient generic nature to be suitable for extrapolation purposes. Two major work activities were differentiated mix-ing/loading and application. An update of the default values in UK-POEM has been presented (POEM, 1992). 

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