【摘 要】
：
Iron and steel manufacture has been ranked as the largest industrial source of environmental contamination in the USA; the wastes generated in their production processes contain heavy elements that ca
【机 构】
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Egyptian Nuclear and Radiological Regulatory Authority
论文部分内容阅读
Iron and steel manufacture has been ranked as the largest industrial source of environmental contamination in the USA; the wastes generated in their production processes contain heavy elements that can be a source of contamination,and TENORM that can impose an occupational and/or public radiological impact.About 2-4 tonnes of various solid wastes (slag,sludge,dusts and scales) are generated per ton of steel production.A total of sixteen industrial (ore,dust,slag,washing residue,sludge and scale) samples were collected from four factories that represent the steel industry in Egypt.Uranium,thorium and major elements (A1,Ca,Fe,K,Mg,Na,P and Ti) were analyzed using inductively coupled plasma - mass spectrometer (ICP-MS).Activity concentration of 238U,232Th and 40K in ore samples was depend on the host rock of the hematite mineral.Their activity concentration and activity ratios (226Ra/238U,2IOPb/226Ra,2IOPo/2IOPb,238U/232Th and 226Ra/228Ra) were enhanced through the industrial processes in different patterns.According to the assumed scenarios,the occupational exposures by TENORM inhalation were calculated and discussed.
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