Selenium and other trace element in phosphorites: A comparison between those of the Bayovar-Sechura and other provenances |
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| Authors: | J Bech M Suarez F Reverter P Tume P Sánchez N Roca A Lansac |
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| Institution: | 1. Faculty of Biology, University of Barcelona, Avda. Diagonal 645 (08028) Barcelona, Spain;2. Department of Statistics, Faculty of Biology, University of Barcelona, Avda. Diagonal 645 (08028) Barcelona, Spain;3. Facultad de Ingeniería, Universidad Católica de la Santisima Concepción, Casilla 297, Concepción, Chile |
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| Abstract: | Data of trace element composition of phosphorites are scarce and incomplete. Phosphorites of different origins can vary substantially in trace element contents. In this paper 20 trace element concentrations of 35 sample phosphorites are reported. The geographical provenance is: Bayovar-Sechura (Peru), Khouribga, Youssoufia and Boucraa (Morocco), Gafsa (Tunisia), Florida (USA), Idaho and Phosphoria Formation (USA), North Carolina (USA), Algeria, Israel, Senegal, Syria and Togo. Aqua regia extracts were used to estimate the “pseudototal” values, following standard procedures (ISO 11466, 2002) and measured by ICP-AES and ICP-MS. |
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| Keywords: | Phosphorite Selenium Trace elements Chemical analysis Statistical analysis Bayovar-Sechura Peru Provenance |
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