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LEACHING CHARACTERISTICS OF BORON AND SELENIUM FOR VARIOUS COAL FLY ASHES
Abstract The leaching characteristics of B and Se for coal fly ash (CFA) were examined. Twenty-one CFA samples were subjected to a leaching test, in which CFA was shaken with pure water in a liquidExpand
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Effect of HF addition on the microwave-assisted acid-digestion for the determination of metals in coal by inductively coupled plasma-atomic emission spectrometry.
The microwave-assisted acid-digestion for the determination of metals in coal by ICP-AES was investigated, especially focusing on the necessity of adding HF. By testing five certified referenceExpand
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Determination of trace elements in coal and coal fly ash by joint-use of ICP-AES and atomic absorption spectrometry.
Microwave-acid digestion (MW-AD) followed by inductively coupled plasma-atomic emission spectrometry (ICP-AES), graphite furnace atomic absorption spectrometry (GFAAS), and hydride generation atomicExpand
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Effect of pretreatment conditions on the determination of major and trace elements in coal fly ash using ICP-AES
Abstract Microwave-assisted acid digestion (MW-AD) followed by atomic spectrometries such as inductively coupled plasma-atomic emission spectrometry (ICP-AES) was examined for the determination ofExpand
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Analysis of arsenic and some other elements in coal fly ash by X-ray photoelectron spectroscopy.
Surface characterization of coal fly ash (CFA) was carried out by use of X-ray photoelectron spectroscopy (XPS), especially focusing on the occurrence of As. A peak in the XPS spectrum of CFA wasExpand
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Removal of mercury from coal by mild pyrolysis and leaching behavior of mercury
Various types of coals were subjected to the pyrolysis at 300 and 400 °C (mild pyrolysis), and the removal of Hg from coal was determined. The removal efficiency of Hg greatly varied with coal typeExpand
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Leaching of various metals from coal into aqueous solutions containing an acid or a chelating agent
Twelve coals were subjected to leaching procedure with an aqueous solution containing an acid or a chelating agent, such as EDTA. The susceptibility of each metal in coal for the leaching was roughlyExpand
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Release behavior of mercury during mild pyrolysis of coals and nitric acid-treated coals
Abstract Seven powdery coals (four SS coals and three Argonne premium coals) were subjected to pyrolysis at 300 °C under a flow of nitrogen, and the release of Hg from coal was examined. The %Expand
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