ISO 8672:1993 空气质量.用相差光学显微镜测定空气中无机纤维浓度值.膜滤法

标准编号：ISO 8672:1993

中文名称：空气质量.用相差光学显微镜测定空气中无机纤维浓度值.膜滤法

英文名称：Air quality — Determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy — Membrane filter method

发布日期：1993-01

标准范围

规定方法的原理是通过电池供电的取样泵通过薄膜过滤器吸入测量数量的空气来收集样品，将过滤器从不透明的薄膜转变为均匀的光学透明样品，使用相衬显微镜对纤维进行尺寸和计数。结果以每立方厘米空气中的纤维数表示，根据过滤器上的纤维数和测量的采样空气体积计算得出。说明了该方法的局限性。

The principle of the method specified is collecting a sample by drawing a measured quantity of air through a membrane filter by means of a battery-powered sampling pump, transforming the filter from an opaque membrane into a homogeneous optically transparent specimen, sizing and counting the fibres using a phase contrast microscope. The results are expressed as fibres per cubic centimetre of air, calculated from the number of fibres on the filter and the measured volume of air sampled. Limitations of the method are stated.

标准预览图