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测定石棉粉尘有光学显微镜或电镜计数石棉纤维数的方法与X线衍射分析法,红外线吸收光谱分析法、示差热分析法等。其中光学显微镜的计数法广泛用于测定环境空气中石棉粉尘。而扫描或透射电镜则用于实验、调查、研究等方面。光学显微镜计数法是将石棉粉尘采集在滤膜上,用既定的方法制作标本后,应用相差显微镜或干扰相差显微镜观测。计数长度大于5
Determination of asbestos dust with optical microscopy or electron microscopy asbestos fiber count method and X-ray diffraction analysis, infrared absorption spectroscopy, differential thermal analysis and so on. Among them, the counting method of optical microscope is widely used to measure asbestos dust in ambient air. The scanning or transmission electron microscope is used for experiments, surveys, research and so on. Optical microscope counting method is to collect asbestos dust on the filter, using the established method of making specimens, the use of phase contrast microscope or interference phase contrast microscope. Count length greater than 5