Martins Fernanda Machado, dos Reis Neto José Manoel, da Cunha Carlos Jorge
Laboratório de Química Mineral Aplicada, Departamento de Química, Universidade Federal do Paraná (UFPR), CP 19081, CEP 81.530.000, Curitiba-PR, Brazil.
J Hazard Mater. 2008 Jun 15;154(1-3):417-25. doi: 10.1016/j.jhazmat.2007.10.041. Epub 2007 Oct 18.
A weathered and a recent sample of electric arc furnace dust (EAFD), generated in a southern Brazilian steel industry, were characterized by X-ray fluorescence spectroscopy (XFA), powder X-ray diffraction (XRD), thermogravimetric analysis (TG), scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) probe and Fourier transform infrared spectroscopy (FTIR). A quantitative phase composition model, that accounts for the observed data and for the physico-chemical conditions of formation, was postulated for each material. One sample, in the form of a wet paste, was collected from the lowest part of a landfill and corresponds to a weathered material whereas the other sample was collected from the top portion of the landfill and corresponds to a recently produced material. The dominant cations present in both samples are iron, zinc and lead with minor amounts of manganese, calcium and silicon. The dominant mineralogical phases identified in both materials are Magnetite, Franklinite and Zincite. The recent sample has Laurionite whereas the weathered sample has Hydrocerussite and Hydrozincite.
对巴西南部一家钢铁厂产生的电弧炉粉尘（EAFD）的一个风化样本和一个新鲜样本，采用X射线荧光光谱法（XFA）、粉末X射线衍射法（XRD）、热重分析法（TG）、配备能量色散光谱（EDS）探头的扫描电子显微镜（SEM）以及傅里叶变换红外光谱法（FTIR）进行了表征。针对每种材料假定了一个定量相组成模型，该模型考虑了观测数据以及形成的物理化学条件。一个呈湿糊状物形式的样本是从垃圾填埋场的最底部收集的，对应一种风化材料，而另一个样本是从垃圾填埋场的顶部收集的，对应一种新产生的材料。两个样本中存在的主要阳离子是铁、锌和铅，还有少量的锰、钙和硅。在两种材料中鉴定出的主要矿物相是磁铁矿、锌铁尖晶石和红锌矿。新鲜样本中有羟氯铅矿，而风化样本中有碳酸铅矿和水锌矿。
