室内燃煤地方性氟中毒空气中颗粒物理化特性的讨论

Discussion for the physical and chemical characteristics of particles in air in endemic fluorosis areas from indoor coal burning

本文用串级冲击式大流量采样器在四个以不同煤种为燃料的氟病区居民室内采集了空气分级颗粒物样品,用 KC-8301可吸入颗粒物采样器采集了上述现场空气中气态和气溶胶态氟化物,同时用离子色谱和离子选择电极等手段对其进行了测定,在此基础上,对各病区室内空气颗粒物及其上主要无机阴离子的浓度、粒度分布规律,空气中不同状态氟的含量等问题进行了初步的探讨,并结合呼吸道沉积理论讨论了它们与人体健康的关系。

Different sizes of suspended particles of indoor air in four endemic fluorosisareas were collected by means of a Andersen model 2000 cascade impactor,whilegaseous and aerosol-form fluorides were also collected with the aid of a KC-8301inhalable particles collector.The concentration of maior anions(F^-,CI^-,NO_3^-,SO_4^(2-))on the particles of different sizes and of fluorides in the indoor air wasanalyzed by IC and IES respectively.The distribution of particles and major ani-ons as well as the ratio of fluorides in different state in the indoor air werestudied in detail.According to the theory of respiratory trace deposition,therelationship between these results and human health was discussed.