نتایج جستجو برای: zinc sulphide
تعداد نتایج: 76128 فیلتر نتایج به سال:
The Eagle Bay assemblage in south central British Columbia contains numerous polymetallic massive sulphide deposits, mainly within highly deformed and metamorphosed Devonian felsic volcanic rocks. A number of these, including Rea and Homestake, have had limited past production, and others have undergone extensive exploration and development. Less known and understood are the sediment-hosted mas...
In this study, we focused on microfluidic electrochemical analysis of zinc complexes (Zn(phen)(his)Cl2, Zn(his)Cl2) and ZnS quantum dots (QDs) using printed electrodes. This method was chosen due to the simple (easy to use) instrumentation and variable setting of flows. Reduction signals of zinc under the strictly defined and controlled conditions (pH, temperature, flow rate, accumulation time ...
Hydrogen sulphide is still a potential hazard in several occupations"2 and especially in sulphate pulp mills (P Jappinen, academic dissertation) and oil refineries. Blood sulphide may be used as an indicator of an excessive human hydrogen sulphide exposure. Fatal hydrogen sulphide concentrations are known.34 Blood sulphide concentrations have been determined before by ion selective electrodes c...
Oxygen consumption, ATP production and cytochrome c oxidase activity of isolated mitochondria from body-wall tissue of Arenicola marina were measured as a function of sulphide concentration, and the effect of inhibitors of the respiratory complexes on these processes was determined. Concentrations of sulphide between 6 and 9 µmol l-1 induced oxygen consumption with a respiratory control r...
Microwave technology has a potential application in the extraction of zinc from sulphide ores, knowledge of the dielectric properties of these ores plays a major role in the microwave design and simulation for any process. The dielectric properties of zinc sulfide concentrate for two different apparent densities—1.54 and 1.63 g/cm3—have been measured by using the resonance cavity perturbation t...
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