【摘要】 采用形态连续提取法 ,研究了粉煤灰中重金属Pb、Cd的水溶态、可交换态、碳酸盐结合态、氧化锰结合态以及强结合态的含量。结果表明 ,粉煤灰中Pb、Cd的有效态含量都极低,主要是以强结合态存在。更多还原

【Abstract】 A test was performed to revealed the transformation of Pb, Cd and other forms in pulverous coal ash by successive extraction. The result showed that the availability of Pb, Cd in the coal ash was low, while their forms were in strong bound with 48.62 mg/kg, and 0.10mg/kg for Pb and Cd, respectively.更多还原