introduction: recent investigations have detected the presence of significant levels of heavy metals (chromium, lead and cadmium) in toys and other pvc products manufactured for children. in some countries, addition of compounds containing toxic metals to toys are limited or prohibited. methods: to evaluate the safety of some of the plastic toys in the city of isfahan with respect to toxic trac...

Due to vast probable contaminations from pharmaceutical effluent, the main purposes of this study were to decrease the heavy metal toxic levels from waste water of pharmaceutical research and educational laboratories. The potential ability of A. Vera for cleaning up contaminated educational sites soil and the probable capability of this plant to phytoextract different metals (Chrome (III) and (...

The present study deals with Bacterial response as determinant of heavy metals stress and antibiotics by isolation, identification and characterization of heavy metal resistant bacteria which was isolated from sewage effluent collected in three different places of Ganga river in Allahabad, The two isolates were selected based on high concentration of heavy metal and antibiotic resistances. Morp...

Removal of heavy metals from wastewater needs advance chemical technology and is more expensive too. The cheaper alternative for this is the bioremediation using heavy metals resistant microorganisms. In this study, 10 heavy metal resistant bacteria were isolated from oxidation ditch of wastewater treatment plant of Bagmati Area Sewerage Project. These include chromium resistant Staphylococcus ...

Overlying water, sediment, rhizosphere sediment and mangrove seedlings in the Futian mangrove forest were analyzed for heavy metals. The results showed that mangrove plant acidified sediment and increased organic matter contents. Except for chromium (Cr), nickel (Ni) and copper (Cu) in Aegiceras corniculatum sediment, heavy metals in all sediments were higher than in overlying water, rhizospher...

background: one of the most critical problems in the field of water and food pollution is the heavy metal pollution. agricultural products are exposed to this type of contamination through wastewater; industrial activity and population pollutions are also in its area. since the plant in the affected areas can directly enter heavy metals into the food chain, so, it is important to check their le...

background: the concentrations of heavy metals in the tissues and organs of fishes indicate the concentrations of heavy metals in water and their accumulation in food chains. in the present study, the concentrations of zn, cu, cd, ni, v and pb in three common species of fish and the potential health risks to local residents via consumption of the fishes were estimated.  methods: the concentrati...