Качество воздуха. Определение концентрации минеральных волокон, находящихся в воздухе, с помощью фазоконтрастного оптического микроскопа. Метод с применением мембранного фильтра
Название (англ.):
Air quality; determination of the number concentration of airborne inorganic fibres by phase contrast optical microscopy; membrane filter method
Описание (англ.):
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 ofair, calculated from the number of fibres on the filter and the measured volume of air sampled. Limitations of the method are stated.
Дата регистрации:
01.02.93
Дата введения:
01.02.93
Код КГС:
Т58
Код ОКСТУ:
0012
Код ОКС(МКС):
13.040.30
Код ОКП:
0012
Ключевые слова:
AIR AIR PURIFICATION DETERMINATION DUST FIBRES INORGANIC MEMBRANE FILTRATION MICROSCOPY PARTICLE DENSITY POLLUTION CONTROL QUALITY TESTING TESTS