纤蛇纹石石棉的纳米效应与生物活性

本文首次从纳米材料与纳米效应角度出发讨论了纤蛇纹石石棉的形态、表面结构、表面性质与生物活性的关系。结果表明，纤蛇纹石石棉属自然界产出的一种特殊的一维纳米丝状矿物，在形态、结构和表现性质等方面表现出纳米材料所具有一般特性，其中，形态上一寸及高表面化学活性构成了它的生物活性特征。纤蛇纹石石棉纤维对动物的危害，既具有一般纤维的危害性，又具有非晶质ＳｉＯ２的危害性。由于纤维的小尺寸效应和高表面活性而使生物

Nanostructure Effect and Bio_activity of Chrysotile Asbestos

This paper for the first time discusses the relations of the configuration, surface structure and surface properties of chrysotile asbestos with bio_activity based on nanometer_sized material and nanostructure effect. Chrysotile asbestos is a kind of special mineral occurring naturally as one_dimensional nanometer_sized silk. It has the general properties of nanometer_sized material in configuration, structure and surface properties, which are chiefly marked by the configuration of one_dimensional nanometer_sized silk, tubular structure and high activity behavior of the surface (interface). And its bioactivity is formed by the very small size and very high surface activity of fibers. The injuries done by chrysotile asbestos fibers to creatures include not only those of general fibers but also those of the amorphous SiO 2 phase. The bioactivity of asbestos fibers increases greatly due to the nanometer_sized effect and the high surface activity of asbestos fibers.