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- W2058808509 abstract "The aim of the study was to determine total trace (Cd, Co, Cr, Cu, Mn, Pb and Zn) and major (Al and Fe) element concentrations in calcareous soils using microwave-assisted digestion procedures. The literature showing lack of consensus regarding digestion procedures and unsatisfying recoveries for calcareous materials, four procedures using various acid combinations (HCl, HNO3, H2O2, HF) and volumes were tested using a certified reference material (CRM 141R) and natural calcareous soil samples. Digests were analysed by inductively coupled plasma-atomic emission spectrometry (ICP-AES). Repeatability (R.S.D. <5%) and recoveries (82–116%) showed that the procedures were precise and accurate for most elements. Five calcareous soil samples from a Champagne vineyard plot were, then, subjected to these procedures. In calcareous materials, the presence of HF resulted in Al being severely underestimated (recovery <5%) and Co overestimated (recovery >124%) due to complex formation or spectrochemical interferences, respectively. As digestion was not significantly influenced by the addition of H2O2, the procedure corresponding to Aqua regia (HCl–HNO3) appeared as the best compromise and was selected for further multielemental environmental studies on calcareous materials, even if the absence of HF could lead to incomplete digestion of accessory silicate minerals. Results for a vineyard plot showed that the soils were contaminated (3.65 mg kg−1 Cd, 67 mg kg−1 Cr, 278 mg kg−1 Cu, 143 mg kg−1 Pb and 400 mg kg−1 Zn) as a consequence of urban waste and copper-treatment applications." @default.
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- W2058808509 date "2008-10-01" @default.
- W2058808509 modified "2023-10-14" @default.
- W2058808509 title "Comparison of microwave-assisted digestion procedures for total trace element content determination in calcareous soils" @default.
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- W2058808509 doi "https://doi.org/10.1016/j.talanta.2008.06.023" @default.
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