抄録
A critical review is made of the current methods of measurement of the air pollutants for which air quality standards are promulgated, odorous substances, organic gases, and products of photochemical air pollution.
Recent progress is also reviewed on the measurement of metals employing the methods such as neutron and X-ray activation analysis, and the measurement of aerosol employing middle volume air sampler, β-ray absorption, quartz vibrating balance and so on.
The analysis of polynuclear hydrocarbon, sulfate and individual particles are also described.
The application of spectroscopy on the measurements of air pollutants is also a new field of research. Particularly chemiluminescence detection of 03 and other gases, remote sensing by laser radar and Barringer correlation spectrometer are developing.
The preparation of standard materials for the calibration is also an important field of study and the methods of generation of standard gases employing permeation tube, pen-ray tube and of standard aerosol such as spinning disk and condensation generators are are important for the evaluation of newly developed measuring techniques.
However, the cross check of various methods has to be done for the achievement of the reliable comparison of the data obtained by different methods and in different countries. The current cross check of sulfite analysis conducted by EPA of U. S. A. and cross-country comparison of metal concentrations in Europe clearly show the importance of such cross check.
