Determination of As, Cd, Cr, and Pb Species Formed in a Combustion Environment
Determination of As, Cd, Cr, and Pb Species Formed in a Combustion Environment
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DOI：
10.1080/00102209408951865
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发表时间：
1994-11
影响因子：
1.9
通讯作者：
R. Winter;R. Mallepalli;K. P. Hellem;S. W. Szydlo
中科院分区：
文献类型：
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作者：
R. Winter;R. Mallepalli;K. P. Hellem;S. W. Szydlo
摘要为了便于了解焚烧过程中金属的命运，金属的形态是至关重要的。因此，进行了一项实验研究，以确定焚烧过程中金属的形态。将砷、镉、铬和铅的金属盐水溶液注入实验室反应器中，火焰后。通过等速采样在玻璃纤维过滤器上捕获气溶胶。反应器温度在600至1100°C之间变化，化学计量比在0.95至1.25之间变化。利用X射线衍射定量分析的参考强度法（RIM）结合X射线透射法测定了燃烧环境中气溶胶的形态。结果表明，温度和化学计量比影响在燃烧环境中的结晶化合物的形成。将同一种金属的不同化合物注入炉中会形成不同的产品。RIM用于确定组成。
Abstract To facilitate the understanding of the fate of metals during incineration the speciation of metals is critical. Thus, an experimental study to determine the speciation of metals during incineration was performed. Aqueous metal salts of arsenic, cadmium, chromium, and lead were injected into a laboratory reactor, post-flame. Aerosols were captured on a glass fiber filter by isokinetic sampling. Reactor temperature was varied from 600 to 1100°C and the stoichiometric ratio was varied from 0.95 to 1.25. The Reference Intensity Method (RIM) of quantitative X-ray diffraction analysis combined with X-ray transmission was utilized to determine the speciation of aerosols removed from the combustion environment. The results indicate that temperature and stoichiometric ratio affect the formation of crystalline compounds in the combustion environment. Injection of different compounds of the same metal into the furnace resulted in the formation of different products. RIM was used to determine the composition...