粉煤灰的环境特性

论述了粉煤灰中有害物质及其对环境产生危害的途径和粉煤灰危害性的特点，分析了粉煤灰的淋溶性、粉煤灰微量元素农作物吸收性和粉煤灰的放射性，认为粉煤灰总体上对环境不会产生严重危害，但粉煤灰存在环境危害性也是不争的事实．总结了当前粉煤灰环境特性研究状况，指出了研究过程中存在的主要问题，认为将粉煤灰利用研究与粉煤灰环境特性研究结合起来是粉煤灰综合利用的必由之路和发展方向．

The environmental characteristics of fly ash

The harmful substances in fly ash, its harmful gateway to environment and characteristics of harmfulness were discussed. A leachability of fly ash, a crop absorptivity of trace elements in fly ash and a radioactivity of fly ash were analyzed. It is thought that fly ash totally does not result in serious endangerments to environment, but it is a fact that fly ash has produced some contaminative events. The present states for environmental studies about fly ash were summarized and some existent problems in these studies were pointed out. It is asserted that those which utilizable studies of fly ash are combined with environmental studies of fly ash will be the only way and a developmental direction.