Cytochrome P450s and Galactose Oxidases exploit redox active ligands to form reactive high valent intermediates for oxidation reactions. This strategy works well the late 3d metals where accessing states is rather challenging. Herein, we report of NiII(salen) (salen=N,N′-bis(3,5-di-tert-butyl-salicylidene)-1,2-cyclohexane-(1R,2R)-diamine) with mCPBA (meta-chloroperoxybenzoic acid) a fleeting Ni...

background: some of metal ions as environmental pollutants show estrogenic activity. this xenostrogenic compounds can be caused carcinogenicity in organs. the mechanism of carcinogenicity of metal ions is not clarified. objectives: in this study, we investigated the transcriptional effects of variety of metal ions on the bovine oxytocin and the thymidine kinase-ere promoter by estrogen receptor...

carbon nanotubes (cnts) are a novel material that exhibits good adsorption behavior toward various toxic pollutants in aqueous solution. these adsorbents have a fast adsorption rate and high adsorption efficiency, efficient to remove various pollutants and they are easy to recover and reuse. these features highlight the suitability of cnts for the treatment of water polluted with heavy metal io...

the feasibility of kaolinite used as a low-cost adsorbent for the removal of pb(ii), zn(ii) and cu(ii) from aqueous solutions was investigated. during the removal process, batch technique was used, and the effects of heavy metal concentration and contact time on adsorption efficiency at ph of 4.5, under a constant temperature of 20?1 ?c were studied. the experimental results were analyzed using...

the interaction between some heavy metal ions such as of pb(ii), cd(ii) and cu(ii) ions from aqueous solution adsorbed by single walled carbon nanotube (swcnts) and carboxylate group functionalized single walled carbon nanotube (swcnt-cooh) surfaces were studied by atomic absorption spectroscopy. the effect of contact time, ph, initial concentration of ion, ionic strength and temperature on the...