CEREGE, Aix-Marseille Université, CNRS, CdF, IRD, BP 80, 13545 Aix en Provence, Cedex 4, France.
Chemosphere. 2010 Jan;78(4):445-50. doi: 10.1016/j.chemosphere.2009.10.039. Epub 2009 Nov 17.
Many studies have provided evidence of the impact of heavy metals in atmospheric emission. Sinter plants represent the first step in steel production, and are important emitters of Cd and Pb. The toxicity of these two metals depends above all on their speciation. Particles collected before and after the filtration system were analysed to determine the Cd- and Pb-bearing phases, using analytical tools such as XRF, EXAFS or ICP-AES and chemical leaching (sequential extractions adapted to steel dusts). Results show that Pb is associated with carbonate and Cd with chloride. These two types of speciation lead to high solubility under common environmental conditions, which may produce impacts on the environment and health.
许多研究已经提供了重金属对大气排放影响的证据。烧结厂是钢铁生产的第一步，也是 Cd 和 Pb 的重要排放源。这两种金属的毒性首先取决于它们的形态。使用 XRF、EXAFS 或 ICP-AES 等分析工具以及化学浸出（适应于钢尘的顺序提取），对过滤系统前后收集的颗粒进行了分析，以确定 Cd 和 Pb 所含的相。结果表明，Pb 与碳酸盐结合，Cd 与氯化物结合。这两种形态导致在常见环境条件下具有高溶解度，这可能对环境和健康产生影响。
