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Electrocatalysis of nicotinamide adenine dinucleotide at a (C70)2-p-tert-butylcalixarene chemically modified electrode
The electrocatalytic activity of a (C70)2-L chemically modified electrode toward nicotinamide adenine dinucleotide in a 1:1 mixed solvent of acetonitrile and water containing tetra-n-butylammonium perchlorate as the supporting electrolyte is described.
Environmental monitoring of platinum in air and urine
Platinum concentrations were determined in 166 air samples from Munich and in 178 urine samples from individuals without occupational exposure. The airborne platinum concentrations were from samplings in the public transport system of the city of Munich during regular rides from 1993 to 1996. Compari...
Environmental monitoring of radioisotopes by mass spectrometry and radiochemical methods in urban areas
The variety of systems and processes that may introduce radioactivity into the environment, such as human activities involving nuclear weapons and the nuclear fuel cycle (including mining, milling, fuel enrichment, fabrication, reactor operation, spent fuel stores, reprocessing facilities, medical ap...
Trace elements in bovine muscle: an ongoing project for a new certified reference material
In the framework of the activities of the Community Reference Laboratory (CRL) for residues at the Istituto Superiore di Sanita` (ISS) of Rome, a number of proficiency tests were performed in order to assess and improve, wherever necessary, the quality of regulatory residue analysis within the...
A theoretical consideration of algae removal with clays
Recently, periodic and widespread algal blooms have been reported in the estuaries and lakes of Korea, causing a variety of problems for aquatic life and human activity. Currently, the only remedial practice employed for removing algal blooms is to spread clay on the surface of the water. However, th...
Orthogonal array design experiments for optimizing the separation of nine pesticides by micellar electrokinetic chromatography
Separation in micellar electrokinetic chromatography is influenced by many factors. The separation of 9 pesticides was optimized using orthogonal array designs (OADs), five relevant factors were investigated: type and concentration of surfactant, concentration of buffer, pH and concentration of urea...
Subject Index Volume 72
High resolution γ-spectrometry by HPGe detector and β-spectrometry by liquid scintillation counting, hyphenated to elemental analysis techni...
We will present the analytical and radioanalytical methods that have been developed to determine the amount of isotopic carrier and the SA(NCA) in the case of 188Pt, 191Pt, to be used for ‘multiple labelling’ experiments, by: high resolution γ-spectrometry, β-spectrometry by liquid scintillati...
Heavy metal binding by inactivated tissues of Solanum elaeagnifolium: chemical and subsequent XAS studies
We characterized the mechanism of the binding between the biomass tissues with heavy metals by using chemical modification techniques. These techniques included chemical esterification and hydrolyzation of carboxylic groups and methyl esters, respectively. These studies have shown an overall decreas...
Sensitive spectrophotometric determination of trace quantities of phenylhydrazine
A method for the rapid and accurate determination of trace quantities of phenylhydrazine based on its inhibition effect in the reaction between bromate and hydrochloric acid is developed. The decolorization of methyl orange by the reaction products was used to monitor the reaction spectrophotometrica...