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DDVP residues in air following application to a tobacco-storage warehouse
R B Leidy1, T J Sheets, C G Wright
1Pesticide Residue Research Laboratory, North Carolina State University, 27607, Raleigh, NC, USA.
Abstract:
A 10% solution of DDVP was sprayed until a total volume of 20.9 liters of the solution had been released into the air in a tobacco-storage warehouse. Air samples were taken at various times after application in three different experiments to measure DDVP levels with time and to determine if DDVP concentrations exceeded the threshold limit (TVL). In the three experiments, residue levels were highest initially in the center of the warehouse compared to a corner, but residue levels tended to equalize over the sampling period. The data indicated that workers entering storage warehouses after application of DDVP would not encounter hazardous levels of this material.
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