Study And Researche Regarding Binaring Sistem With Tiobis - β – Naftol
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2007, Vol 30, Issue 2
Abstract
This paper presents the results for contribution of determining the manganese from waters and steel. Manganese, due to its properties, cannot be found but in acid waters and usually associated with iron. In small amounts, the manganese is a necessary nutrient above all as activator of certain enzymes. In large amounts, though, coming from contaminated waters, the manganese is noxious and may cause brain damage l. It is considered that drinking water should not contain more than 0,1 ppm manganese. From the studies carried out , the tiobis-β-naftolul dissolved in etilic alcohol or isobutilic alcohol may be used to determine the Mn (II) ion , under certain conditions as described in the paper. To determine manganese (II) in water, a photometric extraction method has been developed. The method is new, useful and accurate and enables determining Mn in surface, underground and fishery waters.
Authors and Affiliations
Olga MITOSERIU, Stela CONSTANTINESCU, Lucica ORAC
Antimicrobial Activity of Ag:ZnO/Chitosan Composites
This paper deals with Ag, ZnO and Ag-doped ZnO nanoparticles embedded in chitosan (CS) matrix, prepared by hydrolysis of zinc acetate in isopropanol in the presence of lithium hydroxide (LiOH) in low temperature conditio...
Electrodeposition and Characterization of Ni-Si Nanocomposite Coatings
In this paper is presented morphological aspects and corrosion behaviour of composite coatings having nickel as metal matrix and silicon as dispersed phase obtained during electrodeposition process of nickel. Silicon mea...
Research on the Operation of Commercial Vessels with Compressed Air
Regarding the reduction of the carbon dioxide emissions in the atmosphere, this paper is going to present a system of propulsion with compressed air used for medium-sized commercial vessels. In the transport domain, Roma...
Influence of Atmospheric Conditions on the Mechanical Properties of Pet Rubber Composites
The aim of paper is to study the influence of environmental open air conditions on the PET-rubber composites. Two set of samples (Type I, Type II) were obtained with the same composition, but the composites of Type I are...
Researches Regarding Improvement of the Fatigue Limit by Heat Treatments of the Al-Alloys for Aeronautics Industry
The laboratory experiments were made on the two aluminium alloyed qualities used for aeronautical industry. The structure and mechanical characteristics were analyzed and the gotten results were compared using those two...