The reaction of Group 6 metals with SWCNT has the potential to bridge the resistive SWCNT . . . SWCNT junctions by the formation of “Cr(SWCNT)2” complexes analogous to Cr(C6H6)2. This study reports that the formation of such species is very sensitive to oxidation by a residual iron oxide catalyst used for the growth of the SWCNTs and adsorbed/bound oxygen functionality. The reaction of raw HiPc...

Accumulation of trace metals in sediment can cause severe ecological impacts. The present study determines the elemental concentrations and chemical partitioning of heavy metals in surface sediment of Shadegan wetland. Shadegan wetland is one of the most important wetlands in southwest of Iran and it is in Ramsar-listed wetlands. For this purpose, 7 sampling stations were selected for sediment ...

one of the major problems about the chelant-enhanced phytoextraction is the potential metal leaching associated with chelant application. a glasshouse pot experiment was conducted to investigate phytoextraction efficiency of common reed (phragmites australis (cav.) trin. ex steudel) for lead and chromium and to determine edta (ethylenediaminetetraacetic acid) enhancement of the mobility and phy...

The uptake of colloid-bound Cd, Cr, and Zn by marine plankton (including the diatom Thalassiosira pseudonana, the dinoflagellate Prorocentrum minimum, and the copepod Paracalanus aculeatus) was studied using the radiotracer technique. Natural organic colloids (operationally defined as particles between 1 kDa and 0.2 μm) were isolated from Hong Kong coastal seawater using cross-flow ultrafiltrat...

pollution of water and soils by heavy metals is an emerging problem in industrialized countries.the present study was conducted to investigate the heavy metals concentration in water and sedimentsamples from ship breaking sites of sitakunda to assess the potential ecological risk posed by heavy metalusing different methods. heavy metals concentration was analyzed by atomic absorption spectrosco...

The gastrointestinal tract (GIT) is exposed to various environmental pollutants including metals, that contaminate food and water which may have toxic effects on body. GIT has large amount of microbes that live in symbiosis and help the host in different ways. The resident gut microflora have a significant role to play in detoxification and elimination of the harmful metals from the body. Chrom...

background: this study purposed to assess the health risks of heavy metals including nickel (ni), chromium (cr), mercury (hg), and lead (pb) in three widely-consumed fish from the coast of bandar abbas (persian gulf) and to determine the maximum amounts allowed for consumption according to the degree of contamination. methods: this cross-sectional study was conducted in the summer and fall of 2...