【摘要】 研究上海、广州和成都三地的飞灰钙含量、酸中和容量与飞灰浸出液pH之间的关系，并运用多元线性回归方程分别预测铅镉浸出浓度与钙含量和铅镉含量之间的关系。试验结果表明：飞灰中钙含量与浸出液pH之间呈现一定的正相关关系。通过酸中和容量与钙含量之间的比对，钙含量可以反映飞灰中碱性物质的量。飞灰中铅和镉浸出浓度在一定程度上可以分别由钙含量及铅含量或镉含量确定。更多还原

【Abstract】 The relationship between calcium content, acid neutralization capacity and pH of leaching solution from Shanghai, Guangzhou and Chengdu fly ash was analysed. In addition, the relationship between dependent variable concentration of leaching lead and variables calcium content and lead content was predicted by multivariate linear regression equation, meanwhile. The results indicated that calcium content in fly ash has a positive correlation with leaching solution pH.Calcium content can reflect the amount of alkaline substances in fly ash by comparison between acid neutralization capacity and calcium content. Leaching lead or cadmium concentration, to a certain extent, can be separately predicted by calcium content and lead content or cadmium content.更多还原