Thermal and chemical energy in laundering to maximize methyl parathion removal from cotton/polyester fabric

Autor: Roger E. Gold, Joan Laughlin
Rok vydání: 1991
Předmět:
Zdroj: Archives of Environmental Contamination and Toxicology. 20:49-55
ISSN: 1432-0703
0090-4341
Popis: Thermal or chemical energies may be used to compensate for each other when one is available in lesser quantity. Thermal energy (temperature of washing) and chemical energy (detergent type, detergent concentration, prewash product use, and level of water hardness) were evaluated relative to residues of methyl parathion on unfinished and repellent finished cotton/polyester poplin fabric. The results showed that the repellent finish was effective in limiting methyl parathion absorption; however, after-laundering residues were greater for the repellent finished fabric than for the unfinished fabric. The residue remaining was significantly less when specimens were laundered at 60°C. As detergent concentration increased, residue retention decreased when laundering was done at 30°C, but limited contribution of increasing detergent concentration was seen at the higher temperature. Use of a prewash product enhanced removal and was especially important when laundering had been done with the anionic phosphate detergent. Increasing the detergent concentration was more important when laundering was done without the use of a prewash product.
Databáze: OpenAIRE
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