background and objectives: despite the increasing impact of heavy metal pollution in persian gulf due to urban growth and agricultural and petroleum activities, few studies have focused on the behavior and relationships of these pollutants in the biotic and abiotic components of aquatic environments. in this study, the amount of some metals (copper, iron, lead, cadmium, zinc and nickel) was det...

It is well known that the fish remains one of the most popular staple foods not only for the coastal communities but also globally. It is consumed by many people of the world because it has high protein content and a rich source of polyunsaturated fatty acids such as omega-3fatty acids which are important for our diet albeit our bodies cannot make them from scratch because they support normal m...

environmental pollution of soil, plants and deposits around highways endanger urban environment through heavy metals as the by-products of vehicles and urban industries along with other pollutants. in this research, three main highways of tehran city; namely shahid chamran, shahid hemmat and yadegar emam which had the highest rate of vehicle transportation were selected and required sampling wa...

increasing industrial activities lead to entrance of different pollutants into the environment, especially water resources. because of their persistency and non-biodegradation, metals can pose a threat to health of human and other organisms. sediment, fish (lucioperca stizostedion and cyprinus carpio), and common reed (phragmites australis) samples were collected from sattarkhan dam for investi...

The concentrations of heavy metals of Cd, Cu, Cr, Pb and Zn were determined in cauliflower (Brassica oleracea L. var. butrytis L.), carrot root (Daucus carota L.), tomato fruit (Lycopersicon esculenta Mill.), onion bulb (Allium cepa L.) and leafy cabbage (Brassica oleracea var. capital capitata L.), and the respective soils from Morogoro region, Tanzania. The accumulated heavy metals were quant...

Road and foliar dust samples from four land-use districts of Panzhihua City, a famous V-Ti magnetite production area of China, were collected to investigate the sources and distribution characteristics of 9 heavy metals (V, Pb, Cd, Cu, Zn, Ni, Cr, Fe, and Mn). The results suggest that foliar samples had smaller particle size and higher heavy metal contents than road dusts. The contamination ass...

Introduction: Sequential batch reactor (SBR) is one of the modified biological treatment systems which is able to remove BOD5, Nitrogen, and phosphorus from wastewater. The object of this study is to determine the removal efficiency of nitrogen, phosphorus, and heavy metals from municipal wastewater by the advanced SBR system. Materials and Methods: This descriptive-analytical and cross-sectio...