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Showing 1 to 10 of 10 for “"Flameless"”.
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Experimental and numerical investigation of flameless pulverised coal combustion
… work was to investigate the applicability of flameless combustion technology principles to pulverised coal combustion. Lab-scale experiments showed, that it is highly beneficial in terms of NOx reduction to use N2 as coal carrier instead of air. The finding has been supported by OH* …
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Development of a flameless atomic absorption assay for mercury in biological materials and levels of mercury detected in striped bass (Roccus saxatilis) collected in the San Joaquin Delta
The method for the determination of total mercury in biological material described in this paper comprises a destruction of organic matter by wet digestion, a reduction of the mercury by stannous sulfate, and circulation of the displaced mercury vapor in a closed system directly connected with an …
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Επίπεδα των συγκεντρώσεων μολύβδου, καδμίου, χρωμίου, νικελίου, ψευδαργύρου, χαλκού, στα μαλλιά πληθυσμού ημιαστικής περιοχής της Β.Δ. Πελοποννήσου
… the six metals concentrations were determined by flameless atomic absorption spectrophotometry. Arithmetic means of concentrations of Cd, Pb, Cr, Ni, Zn και Cu were 0.31, 4.40, 0.85, 0.73, 182.50 and 10.48 mg/gr respectively for males and 0.19, 3.84, 1.19, 0.73, 187.50 and 10.61 mg/gr respectively …
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Mercury emissions from crematoria
… made both by using a mercury vapour meter and flameless atomic absorption techniques. Levels in each case were significantly higher than controls and gave good overall correlation with cremation output. Air measurements varied and in one case exceeded the occupational exposure standard. In all …
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Investigations concerning the reactions of small molecules with a series of pentacoordinate manganese complexes and the characterization of a solvent refined coal
… in the Solvent Refined Coal were made using flameless atomic absorption spectrometry. The Solvent Refined Coal was shown to contain substantial quantities of catalytic metals and metals of environmental concern. Electron Spin Resonance measurements yielded signals assignable to organic free …
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Determination of Organic Compounds by Atomic Absorption Spectrophotometry (AAS) with Special Reference to Compounds Encountered in Environmental Problems
… spectroscopy finish using both flame and flameless techniques, in which both the organic and aqueous phases have been analysed. Furthermore, a new simple, rapid and accurate spectrophotometric procedure for the determination of saccharin has been devised utilising the fact that "ferroin" …
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The chemical limnology of Lake Bonney, Antarctica, with emphasis on trace metals and nutrients
… iron, manganese, molybdenum, and nickel using flameless atomic absorption. More than 90 percent of the mass of each trace metal was found to be in the monimolimnion. Manganese was by far the most abundant trace metal in the lake, and some evidence suggests it may present a toxicity problem to …
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An analytical study of the role of selected metal ions in bone and joint diseases
… the "free" gold concentration by means of flameless atomic absorption spectrometry (AAS). In addition the chemical nature of titanium ions found in localised darkly stained tissue adjacent to titanium-aluminium-vanadium hip implants was investigated. The production of the dark blue/black …
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Partial and Total Oxidation of Methane in Monolithic Catalysts at Short Contact Times
… generation in catalytic devices, because the flameless catalytic process results in lower emissions of NOx. Noble metals such as Pt, Pd, and Rh are very active catalysts for the conversion of CH4. However, the processes occurring during the partial and complete oxidation of CH4 on these …
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Physical aspects and modelling of turbulent MILD combustion
Moderate or Intense Low-oxygen Dilution (MILD) combustion is one of combustion technologies which can improve efficiency and reduce emissions simultaneously. This combustion type is characterised by the highly preheated reactant temperature and the relatively small temperature rise during …