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The materials used for the synthesis are modified waste raw materials in the form of slags (up to 70 % wt.) with addition of quartz sand and calcium fluoride. The initial batch is being melted at 1400 oC and then quenched in water. The resulting glass frit is milled bellow 75 microns, pressed into “green” samples being exposed in a next stage to thermal scanning at different temperatures with different heating rates, holding temperatures and times. In the framework of present investigation is presented analysis of...

Magnetic susceptibility mapping and rock magnetic characterization of topsoils from southeastern Bulgaria near the Black sea coast was carried out for delineation of the anthropogenic pollution. The presence of strongly magnetic parent material (volcanites, volcanoclastic sediments) and various soil types (Vertisols, Luvisols, Chromic Cambisols, Planosols, Fluvisols) were taken into account by using normalization of the field susceptibilities to the median susceptibility value, calculated separately for each soil ...

Magnetism of soils is determined by the amount of strongly magnetic minerals, which may have different origin – inherent from the parent rocks (lithogenic); “in situ” formed during pedogenesis (pedogenic) and anthropogenic – from atmospheric deposition of particulates emitted from various industrial productions, which together with heavy metals contain also magnetic fraction. Due to the latter contribution, magnetic susceptibility of strongly polluted topsoils is significantly higher than the signal of non...