COMPARISON OF Sr ISOTOPIC RATIOS FROM TWO SOILS NEAR RAVENNA (ITALY) USING AQUA REGIA AND TWO-STEP SEQUENTIAL EXTRACTS

Francesca Castorina, Umberto Masi

Abstract


The Sr-isotope ratios of several samples from a natural and an agricultural soil from Ravenna were determined using aqua regia and the two-step sequential extraction. Results indicate that the two-step extraction can provide the researcher with wider and more precise information on Sr sources, thus being a more suitable methodology for achieving scientific goals than the aqua regia extraction. Lastly, the extracts of hydrochloric acid and aqua regia display similar ranges of δ87Sr, indicating that the two procedures provide comparable information on Sr sources.


Keywords


Sr isotopes; soils; Ravenna; aqua regia; two-step sequential extraction

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References


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DOI: 10.6092/issn.2281-4485/3796

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Copyright (c) 2010 Francesca Castorina, Umberto Masi

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