Environmental Health: Evaluation of heavy metals pollution in Isfahan industrial zone from soils, well / eluent waters and waste water by microwave- electro-thermal atomic absorption spectrometry

Abstract

In this study, soils, well waters, drinking waters, and waste water in the Isfahan industrial area were sampled in spring and summer 2018. In 8 points of industrial zone, important toxic heavy metals such as, lead (Pb), Cobalt (Co), Nickel (Ni), Chromium (Cr), and Cadmium (Cd) were sampled from surface soil (up to 2 m), well/drinking waters and waste water. After sample preparation with micro-wave digestion technique, the concentration of heavy metals was determined by electro-thermal atomic absorption spectrometry (ET-AAS). According to the well water analysis, the mean concentration of Cr, Ni, Co, Cd, and Pb in well water were 95 μg L-1, 146 μg L-1, 185 μg L-1, 12 μg L-1, and 11 μg L-1, respectively. In well water, the concentrations of Cd, Ni, Cr and Co were found much higher than Pb in comparison with the references of World Health Organization (WHO).

Assessment of Health Risk and Elemental Concentrations in Minjingu Vegetables and Soils by Wavelength Dispersive X-ray Fluorescence

“…Timoori Shahnaz studying on the pollution of soils and water of Esfaham Industrial zone found important elements with mean concentrations of Cr was 95 µg L -1 , Ni was 146 µg L -1 , Co was 185 µg L -1 , Cd was 12 µg L -1 and Pb was 11 µg L -1 all these values have exceeded WHO permissible limits [4]. Another study conducted around the power plant, China by Li, results showed that vegetable leaves contain high concentration of Hg, which collated significantly with the amount present in soils.…”