Evidence for the natural origins of anomalously high chromium levels in soil of the Cecina Valley (Italy)
| العنوان: | Evidence for the natural origins of anomalously high chromium levels in soil of the Cecina Valley (Italy) |
|---|---|
| المؤلفون: | Fabrizio Bardelli, Gianniantonio Petruzzelli, Giuliana Aquilanti, Antonella Iadecola, Eliana Tassi, Martina Grifoni, Pierfranco Lattanzi, Sonia La Felice |
| المصدر: | Environmental science--processes & impacts. 20 (2018): 965–976. doi:10.1039/c8em00063h info:cnr-pdr/source/autori:Tassi E.[1], Grifoni M.[1], Bardelli F.[2], Aquilanti G.[3], La Felice S.[4], Iadecola A. [5], Lattanzi P. [6], Petruzzelli G.[1]/titolo:Evidence for the natural origins of anomalously high chromium levels in soil of the Cecina Valley (Italy)./doi:10.1039%2Fc8em00063h/rivista:Environmental science--processes & impacts./anno:2018/pagina_da:965/pagina_a:976/intervallo_pagine:965–976/volume:20 |
| بيانات النشر: | Royal Society of Chemistry, Cambridge, Regno Unito, 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Chromium, inorganic chemicals, Cecina Valley, chemistry.chemical_element, Weathering, Environmental pollution, 010501 environmental sciences, Management, Monitoring, Policy and Law, 010502 geochemistry & geophysics, 01 natural sciences, chemistry.chemical_compound, Soil, ophiolitic rocks, Nickel, otorhinolaryngologic diseases, Environmental Chemistry, Soil Pollutants, Hexavalent chromium, soils, 0105 earth and related environmental sciences, Public Health, Environmental and Occupational Health, Soil classification, General Medicine, Contamination, Soil contamination, chemistry, Italy, Environmental chemistry, Soil water, synchrotron radiation X-ray absorption spectroscopy, Environmental science, chromium speciation, Environmental Pollution, Water Pollutants, Chemical, Environmental Monitoring |
| الوصف: | The problem of high levels of chromium is one of the most important issues in soils of the Mediterranean area, in particular those deriving from ophiolitic parent materials. Very often the chromium concentration is greater than the threshold values of legislation on soil pollution and the knowledge of the origin of contamination (natural or anthropogenic) is important to formulate risk characterization. This study evaluated the soils from three coastal areas of the Cecina Valley (Tuscany, Italy) to understand the origin of chromium in the soils, where high levels of hexavalent chromium were found in well and spring waters of the areas. The main soil characteristics and the correlations among the values of chromium and nickel were determined. Chromium speciation was evaluated by synchrotron radiation X-ray absorption spectroscopy. The results showed the presence of only trivalent chromium in soil and a positive linear correlation between chromium and nickel (e.g. r = 0.76 for the Marina di Bibbona-Bolgheri area), corroborating the hypothesis of a geogenic origin of contamination. This hypothesis was also supported by the low CRI index for the soils with high total Cr content, indicating a higher presence of refractory minerals in the Marina di Bibbona-Bolgheri area than Cecina and Collemezzano areas. The refractory material found in soils was attributed to the presence of ophiolite outcrops in the surroundings and their sedimentary remnants. The weathering of ultramafic-derived constituents and their regional-scale transport are believed to be responsible for the enrichment of chromium and nickel in the investigated soils. |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cf2a2eb00befe80b28a96aefb71578a5 http://www.cnr.it/prodotto/i/392690 |
| حقوق: | RESTRICTED |
| رقم الأكسشن: | edsair.doi.dedup.....cf2a2eb00befe80b28a96aefb71578a5 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |