Titre du document / Document title

Chromatite Ca[CrO₄] in soil polluted with electroplating effluents (Zabierzów, Poland)

Auteur(s) / Author(s)

BAJDA Tomasz ⁽¹⁾ ;

Affiliation(s) du ou des auteurs / Author(s) Affiliation(s)

⁽¹⁾ Department of Mineralogy, Petrography and Geochemistry, Faculty of Geology, Geophysics and Environment Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Cracow, POLOGNE

Résumé / Abstract

Chromatite, Ca[CrO₄] (space group I41/amd), was found as yellow precipitates between the particles of soil, heavily polluted with chromium(VI)-bearing electroplating effluents and weathered subsoil rocks (marly limestones, marls). X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscopy (SEM) have showed the precipitates to be almost pure Ca[CrO₄]. The chromatite occurs mainly as coatings 5-30 μm large and prismatic grains 20-100 μm long. It was formed and preserved due to dissolution of calcium carbonate by electroplating effluents containing Cr(VI). Although precipitation of calcium chromates in the soils polluted with chromium(VI) compounds has already been mentioned in the literature, the author gives the first mineralogical description of the chromatite formed in such an environment.

Revue / Journal Title

Science of the total environment   ISSN 0048-9697   CODEN STENDL 

Source / Source

2005, vol. 336, n^o1-3, pp. 269-274 [6 page(s) (article)] (23 ref.)

Langue / Language

Anglais

Editeur / Publisher

Elsevier, Shannon, IRLANDE  (1972) (Revue)

Mots-clés anglais / English Keywords

Europe ; Poland ; Infrared spectrometry ; X ray diffraction ; Scanning electron microscopy ; Dissolution ; Precipitate ; Calcium Chromates ; Mineralogy ; Geochemistry ; Metallurgical industry ; Industrial waste water ; Soil pollution ;

Mots-clés français / French Keywords

Europe ; Chromatite ; Pologne ; Spectrométrie IR ; Diffraction RX ; Microscopie électronique balayage ; Dissolution ; Précipité ; Calcium Chromate ; Minéralogie ; Géochimie ; Industrie métallurgique ; Eau usée industrielle ; Pollution sol ;

Mots-clés espagnols / Spanish Keywords

Europa ; Polonia ; Espectrometría IR ; Difracción RX ; Microscopía electrónica barrido ; Disolución ; Precipitado ; Calcio Cromato ; Mineralogía ; Geoquímica ; Industria metalúrgica ; Agua servida industrial ; Polución suelo ;

Mots-clés d'auteur / Author Keywords

Chromatite ; Mineralogy ; Soil ; Electroplating effluents ;

Localisation / Location

INIST-CNRS, Cote INIST : 15662, 35400012602612.0200