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Partitionings and kinetic behaviors of major-to-ultratrace elements between industrial waste incineration fly and bottom ashes as studied by ICP-AES and ICP-MS.

The partitionings of major-to-ultratrace elements between industrial waste incineration fly ash (IWIFA) and industrial waste incineration bottom ash (IWIBA) in industrial waste incinerators were investigated by measuring their concentration distributions, where the incineration ash samples were collected from three different types of industrial waste incinerators. The concentrations of the elements in the incineration ash samples were determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) and inductively coupled plasma mass spectrometry (ICP-MS). As a result, ca. 40 elements in the concentration range from mg g(-1) to sub-microg g(-1) could be determined in both IWIFA and IWIBA samples. The concentration ratios of CF/CB (CF, concentration in fly ash; CB, concentration in bottom ash) for analyte elements were used to evaluate the partitionings of the elements between fly and bottom ashes. Then, the correlations between the CF/CB values of the elements and the dissociation energies of their monoxides were examined to evaluate the kinetic behaviors of the elements during the incineration processes. It was found that lithophile and siderophile elements, which have a large affinity with oxygen, were almost equally distributed between fly and bottom ashes, regardless of the dissociation energies of their monoxides. On the other hand, chalcophile elements with rather large volatility provided different behaviors; the elements with the smaller dissociation energies of monoxides were more partitioned in fly ashes than those with the larger ones.