The Problem of Selenium for Human Health—Removal of Selenium from Water and Wastewater
Agata Witczak | Kamila Pokorska-Niewiada | Agnieszka Tomza-Marciniak | Grzegorz Witczak | Jacek Cybulski | Aleksandra Aftyka
Selenium is a trace element that can be poisonous in small quantities. The aim of this study was to analyze the change in the content of selenium in drinking water, raw water, as well as treated and raw wastewater in an annual cycle in the city of Szczecin. The concentration of Se in samples was determined using the spectrofluorometric method at a 518 nm emission wavelength and a 378 nm excitation wavelength. The amount of selenium in drinking water ranged from <:LOD to 0.007 &mu:g/mL, in raw water, from 0.001 to 0.006 &mu:g/mL, in raw wastewater, from 0.001 to 0.008 &mu:g/mL, and in treated wastewater, from 0.001 to 0.009 &mu:g/mL. The selenium content did not exceed the maximum allowable concentration (MAC), 0.010 &mu:g/mL, in any of the water samples tested.
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