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Temperature of washing, detergent type, detergent concentration, prewash product use, and level of water hardness were evaluated for completeness of methyl parathion residue removal from unfinished and repellent finished cotton/polyester fabrics during laundering. The objective was testing of models of detergent type, concentration and mineral content of water with temperature of refurbishment. As level of water hardness increased, residue removal was less complete; however, use of a prewash product was effective in off-setting the decreased cleaning efficiency. Refurbishment was more effective at the elevated temperature, but detergent concentration was seen to compensate for lower refurbishment temperature.
Pesticide, pesticide residue, protective clothing, laundering, functional finish
Professor, University of Nebraska, Lincoln, NE