Total actual dermal exposure

The total actual dermal exposure (TDX) is the amount of material that would get onto the skin of the operator during a representative day of... 

Table 3 Total Actual Dermal and Respiratory Exposure Results for 15 Operators Using Tractor-Drawn Sprayers...

Of primary concern in exposure studies is the amount of compound actually entering the body via ingestion, inhalation, or dermal absorption. In order to evaluate the effectiveness of patches in predicting the absorbed dose, during two studies we attached patches to the clothing at strategic locations in addition to collecting total urine samples. As an example of the fluctuation in 2,4,5-T exposure from one patch to another, Table 1 provides information derived from individual patch analyses from four mist blower crewmembers. 

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