商业干洗衣物中四氯乙烯释放模拟、检测及数学模型的建立

Simulation,detection and mathematical modeling for the release of tetrachloroethylene in commercial dry cleaning

现代医学研究表明四氯乙烯对人体有一定的毒副作用,并且干洗后衣物上残留的四氯乙烯难以释放完全,故有必要进行安全监控。实验模拟了日常生活中干洗衣物储存及放置的环境,以研究四氯乙烯的释放行为。文章采用袋装法与立方环境仓法,研究密闭环境下温度对衣物中残留的四氯乙烯释放的影响。结果表明,在衣物放置的适宜温度范围内,温度越高,四氯乙烯挥发得越快越彻底。同时根据开放环境不同风速下四氯乙烯的残留量匹配建立了f=(a-d)·e^(-(b+cv)t)+d负指数函数模型,探索了四氯乙烯在棉、涤、丝、裘皮中的残留动态、释放速率及有效生命周期,为干洗后衣物的健康穿着提供指导。研究发现在干洗后丝织物中的四氯乙烯挥发最快最彻底,丝织物较适合干洗洗涤。

The modern medical research indicates that tetrachloroethylene has a toxic side effect on the human body,and residual tetrachloroethylene on the clothes after dry-cleaning is hard to be released completely.Therefore,security monitoring is necessary.The experiment simulated the environment of clothing storage and placement in daily life to research the release behavior of tetrachloroethylene.The effects of temperature in closed environment on the release of tetrachloroethylene residues were studied by bagged sampling method and cubic environment chamber testing.The results show that tetrachloroethylene volatilizes faster and more completely with higher temperature in a suitable range.A negative exponential function model of f=(a-d)·e-(b+cv)t+d for tetrachloroethylene residues was built at different wind speeds in the open environment.Residual trend,release rate and effective lifecycle of tetrachloroethylene in cotton,polyester,silk and mink were explored to provide guidance for wearing safety.It is found that tetrachlorethylene in the silk fabrics volatilizes most fast and completely after the dry cleaning,and silk fabrics are more suitable for dry cleaning.