API 4043-1970
大气雾霾：回顾

大气雾霾：回顾 是非强制性国家标准，您可以免费下载预览页

非常抱歉，我们暂时无法提供预览，您可以试试：免费下载 API 4043-1970 前三页，或者稍后再访问。

您也可以尝试购买此标准，
点击右侧 “购买” 按钮开始采购（由第三方提供）。

注意：点击下载后，生成下载文件时间比较长，请耐心等待......

适用范围: INTRODUCTION AND OUTLINE OF FUTURE EFFORT The recent acute Interest in atmospheric hazes and associated aspects of air pollution reflects a general awareness of the threat of diminishing air resources. Because of the complexity of the problem which involves industrial@ scientific@ and biological@ as well as social aspects@ there Is great dispersion of literature between these and other disciplines. In preparing this review we did not@ therefore@ aim at reviewing all the relevant publications; rather@ the method was to identify the most important trends of haze research and to follow the development along these trends. Most leading experts agree that the present state-of-the-art in haze research does not allow immediate formulation of a complete system for classifying and identifying various types of atmospheric haze. A further series of both laboratory and field studies appears necessary. If in the laboratory there is a tendency to consider simple systems which may not be readily relatable to the atmosphere@ the object of field surveys@ especially in urban regions@ is so complex that the field studies rarely yield conclusive results. In view of this@ the greatest importance should be attached to planning comprehensive complexes of identification measurements (combination of detailed direct analysis of aerosol samples with the scattering and transparency measurements@ inclusion of the angular scanning techniques@ polarization measurements@ etc.).

API 4043-1970大气雾霾：回顾