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首页> 美国卫生研究院文献>Journal of Zhejiang University. Science. B >Experimental approaches and analytical technique for determining heavy metals in fallen dust at ferrosilicon production factory in Edfu Aswan Egypt
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Experimental approaches and analytical technique for determining heavy metals in fallen dust at ferrosilicon production factory in Edfu Aswan Egypt

机译：埃及阿斯旺埃德富硅铁生产厂测定落尘中重金属的实验方法和分析技术

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In this study aimed to evaluate the pollution extent of metals and nonmetals inside and outside the ferrosilicon production factory in Edfu, Aswan, Egypt, raw materials (quartz, cokes, iron oxides), ferrosilicon alloy, silica fume, dust and suspended dust (at different sites) samples were collected from the factory, and fallen dust samples were collected from outside the factory, horizontally (at different sites and different distance and directions) and vertically (at different floors in the selected buildings). Gravimetric methods, X-ray fluorescence (XRF), flame photometer, wide range carbon determinator and atomic absorption spectroscopy tools were used for elements determination. The results indicating that the fallen dust and its element contents on southern factory walls being higher than those on eastern factory walls may be due to the nature of the dusts and effects of wind force and wind direction. Fallen dust levels in different regions outside the factory were found to be affected by the distance, direction and floors. The nature of dust samples was affected by gravity and the suspended dust in different factory units depended on the work capacity and method of handling materials by personnel in different production units. Silica fume was a complicated problem, had dangerous effect against the workers’ health, and was characterized by high concentrations of SiO2 (90.6%~93.6%) and heavy metals (Mn, 420.6×10−6~520.3×10−6; Fe, 2354×10−6~2685×10−6; Co, 80.7×10−6~101.6×10−6 and Ni, 5.3×10−6~6.05×10−6). The TSP (Total Suspended Particulate) levels in all factory units were higher than the recommended air quality value (70 μg/m3) under Egyptian law. The effect of ferrosilicon factory fallen dust on the surrounding regions decreased with increasing distance between the factory and these regions. The suspended dust samples in the factory units and their components greatly exceeded national and international standards, so health and environmental criteria must be enforced on these units.
机译：本研究旨在评估埃及阿斯旺埃德富硅铁生产厂内外的金属和非金属，原材料（石英，焦炭，氧化铁），硅铁合金，硅粉，粉尘和悬浮粉尘（在在不同地点）从工厂收集样品，在工厂外水平方向（在不同地点，不同距离和方向）和垂直方向（在所选建筑物的不同楼层）收集落粉尘样品。重量测定法，X射线荧光（XRF），火焰光度计，宽范围碳测定仪和原子吸收光谱法工具用于元素测定。结果表明，下降的灰尘及其在南部工厂墙壁上的元素含量高于在东部工厂墙壁上的灰尘含量，可能是由于灰尘的性质以及风力和风向的影响所致。发现工厂外部不同区域的降尘水平受距离，方向和地板的影响。灰尘样品的性质受重力影响，不同工厂单位中的悬浮粉尘取决于工作能力和不同生产单位人员处理物料的方法。硅粉是一个复杂的问题，具有危害工人健康的危险，其特征是高浓度的SiO2（90.6％〜93.6％）和重金属（Mn，420.6×10 −6 〜 520.3×10 -6 ;铁2354×10 −6 〜2685×10 -6 ; Co 80.7×10 − 6 〜101.6×10 -6 和Ni，5.3×10 -6 〜6.05×10 -6 ）。根据埃及法律，所有工厂单位中的TSP（总悬浮颗粒）水平均高于建议的空气质量值（70μg/ m 3 ）。硅铁工厂掉落的粉尘对周围区域的影响随着工厂与这些区域之间距离的增加而减小。工厂单元及其组件中悬浮的粉尘样品大大超过了国家和国际标准，因此必须对这些单元执行健康和环境标准。

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