Determination of Total Sulfur in Soils and Plants by an Automated Dry Combustion Method |
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Authors: | João MM Leitão Felisbela S Costa Filip MG Tack |
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Institution: | 1. Laboratory of Analytical Instrumental Methods, Faculty of Pharmacy, University of Coimbra , Coura?a dos Apostólos 51, P-3000, Coimbra, Portugal;2. Department of Applied Analytical and Physical Chemistry , Ghent University , Coupure Links 653, B-9000, Ghent, Belgium |
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Abstract: | Abstract Determination of total sulfur in environmental samples can be accomplished using automated dry combustion techniques. The analytical performance of an elemental analyzer (CE Instruments) was compared with a method involving dry ashing followed by ion chromatographic detection of sulfate (IC). Samples included certified reference materials, confirmation materials with a known content of sulfur, and several soils and plants. There was a close agreement between both methods. Superior accuracy, precision and detection limits were obtained using the dry combustion method. Current results suggest that the automated dry combustion technique has developed into an adequate method for the determination of the relatively low total sulfur contents commonly encountered in soils and plants. |
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Keywords: | Total sulfur elemental analyzer soil compost and plant |
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