摘要
生态水泥中的重金属问题已经成为制约水泥回转窑混烧废物技术发展的重要因素。文章从总量及浸出性质两个方面分析了现有的重金属测定方法,并通过试验分析了各方法的特点与适用性。试验结果表明:(1)荧光光谱法是最优的总量测定方法;(2)目前我国常用的浸出毒性测定方法不适用于水泥体系;(3)长期浸泡方法可用于测定特定条件下重金属的长期浸出性。这些结论为制定水泥窑混烧危险废物技术的标准与规范提供理论依据。
Heavy metals in coo-cement restrict the application and development of cement kiln to treat hazardous wastes. Three analysis methods to detect heavy metals in cement including total amount and leaching characteristic were studied. Results show that （1） X-ray fluorescence spectrometer is the best method to detect total concentration of heavy metals in eco-cement. （2） Solid waste-extraction procedure for toxicity of solid waste is not suitable for cement system. （3） Long-term leaching test can be used to predict the long term leaching characteristic under certain situation. All the results can be used to constitute standards and criterion for co-firing technology using cement kiln.
出处
《生态环境》
CSCD
北大核心
2006年第4期726-729,共4页
Ecology and Environmnet
关键词
生态水泥
重金属
总量
浸出性质
eco-cement
heavy metal
total amount
leachability
