نتایج جستجو برای: exposure to concentrations around 40
تعداد نتایج: 10780847 فیلتر نتایج به سال:
background: the present study compared lethal concentrations (lc50-96 h) of cdcl2, crcl3, and pb (no3)2 between two scaled and scaleless freshwater fish species: cyprinus carpio (cyprinidae) and pangasius hypophthalmus (pangasiidae). methods: the experimental fishes were obtained from fish markets/ponds with average lengths and weights of approximately 11.68 ±1.92 and 9.8±1.9 cm, and 25.92±6.3 ...
Background and Objective: Environmental pollutions that affect human health are one of the important worries related to heavy metals production. Our objective of this study was to investigate the blood lead levels in workers of Zinc melting factory of Dandi Zanjan and to compare its level with healthy men who were living around the factory. Materials and Methods: This study was carried out on 4...
Introduction: Exposure to dust is an essential factor in the brick production industry. Determining the mortality rate from silicosis and lung cancer is very important in exposure to crystalline silica dust. Therefore, this study was conducted to risk assessment of workers in machine factories and traditional brick production workshops. Materials and Methods: This cross-sectional study was con...
We determined blood concentrations of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in 41 female employees with previous exposure to pentachlorophenol-based wood preservatives from 10 day-care centers in the Hamburg, Germany, area. We compared the blood concentrations with estimated age-dependent reference values and analyzed the correlation between PCDD/PC...
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