background and aims: from the past studies, it has been proved that consumption of heavy metals by humans may cause several chronicle problems like cancer, kidney and liver damage, high blood pressure and low blood pressure problems and etc. so, it has become very crucial to remove these heavy metals from industrial wastewater. the aim of this study was to find out a low cost and easy available...

an enzyme electrode was developed using the enzyme sulfite oxidase (ec1.8.3.1) immobilized onto pig intestine. hydrogen peroxide produced was monitored amperometrically. all experimental parameters such as ph, temperature, buffer constituent concentration, were thoroughly investigated and optimized when appropriate. the response to sulfite concentration was linear in the range 5.2´10-6 to 1.02´...

Similar reactions of MnCl2·4H2O and CaCl2 with 2,6-bis(hydroxymethyl)-4-methylphenol gave heterometallic coordination clusters very different nuclearities, depending on the Mn:Ca ratio used. With a 1:1 ratio, hexanuclear cluster [MnIII3CaII3(μ3-Cl(HLMe)6(H2O)6]Cl2·6.74H2O (2) “triangle-in-triangle” topology was obtained. However, 2:1 resulted in [MnIII12MnIICaII6(μ4-O)8(μ3-Cl)3.7(μ3-η1-N3)4.3(H...