Pulmonary function response to washed and unwashed cotton.
Cocke-JB; Castellan-RM; Hankinson-JL; Sasser-PE
Proceedings of the Seventh Cotton Dust Research Conference, beltwide cotton production research conferences, January 3-4, 1983, San Antonio, Texas. Wakelyn PJ, Jacobs RR, eds. Memphis, TN: The National Cotton Council of America, 1983 Jan; :62-65
Pulmonary function tests were performed in volunteers exposed to dusts from cotton washed on a continuous washing line designed to wash cotton for nonwoven applications. Four test cottons were used: unwashed, washed with scour and bleach, washed with bleach, and washed with water only. Dust was generated in a model card room and supplied at controlled rates to subjects for 6 hours. A significant reduction in mean ventilatory response was found with exposure of subjects to dust from unwashed cotton, equivalent to an 8 percent decrement in forced expiratory volume in 1 second per milligram of respirable cotton dust to which they were exposed. The potential for respiratory distress was reduced in each of the other cottons, regardless of the manner of washing used. There was a decrease of at least 85 percent in the potency of the card generated respirable dust, depending on how the cotton was washed. There were no statistically significant differences found between the ventilatory response to cottons washed with water only and those which were either bleached or scoured and bleached. The authors conclude that simple water washing, which is actually a thorough rinsing, substantially reduces the amount of dust generated by carding, and markedly reduces the specific acute bronchoconstrictor effect of the remaining dust.
Humans; Cotton-dust; Lung-irritants; Industrial-processes; Dust-analysis; Dust-inhalation; Airborne-dusts; Pulmonary-function-tests; Respirable-dust
Proceedings of the Seventh Cotton Dust Research Conference, beltwide cotton production research conferences, January 3-4, 1983, San Antonio, Texas