Date of this Version
Keaschall, J. L., Laughlin, J. M., and Gold, R. E., "Effect of Laundering Procedures and Functional Finishes on Removal of Insecticides Selected from Three Chemical Classes," Performance of Protective Clothing, ASTM STP 900, R. L. Barker and G. C. Coletta, Eds., American Society for Testing and Materials, Philadelphia, 1986, pp. 162-176.
Eleven pesticides from three chemical classes were chosen for comparison of residues after laundering. Pesticide was introduced to the fabric surface of one of three fabrics--unfinished (UN), renewable consumer applied fluorocarbon finished (RF), and commercially applied fluorocarbon finished (CM) fabric. The fabrics were laundered using one of three laundry treatments--a heavy-duty liquid detergent (HDL) alone, an HDL with a prewash spray, and an HDL with an agriculturally marketed pretreatment.
Gas chromatographic analysis showed that the fluorocarbon-finished fabrics absorbed only 10% of the pesticide absorbed by the UN fabrics. Residues after laundering were significantly different both among and within classes. Although both fluorocarbon finishes reduced absorption of pesticide, they did not facilitate removal of the contaminant through laundering. Laundry additives significantly aided residue reduction.