Determination of Total Sulfur in Fifteen Geological Materials Using Inductively Coupled Plasma‐Optical Emission Spectrometry (ICP‐OES) and Combustion/Infrared Spectrometry |
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| Authors: | Luká? Ackerman Jan Rohovec Ond?ej ?ebek |
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| Institution: | 1. Institute of Geology v.v.i., Academy of Sciences of the Czech Republic, Rozvojová 269, 165 00, Praha 6, Czech Republic;2. Czech Geological Survey, Geologická 6, 150 00, Praha 5, Czech Republic;3. Laboratories of the Geological Institutes, Faculty of Science, Charles University, Albertov 6, 128 43, Praha 2, Czech Republic |
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| Abstract: | A method for the determination of total sulfur in geological materials by inductively coupled plasma‐optical emission spectrometry (ICP‐OES) is described. We show that good results were obtained using this method even for sample types with very low (< 20 μg g?1) sulfur concentration (e.g., peridotite). Sulfur was determined in fifteen geological reference materials with different sulfur contents. For reference materials with certified sulfur contents, the ICP‐OES method gave results in excellent agreement with certified values, and uncertainties better than 4% RSD. ICP‐OES results for sulfur in other reference materials yielded RSDs better than 10%, where S concentrations were > 100 μg g?1 (except for diabase W‐2a, 16% RSD). Reference materials with lower sulfur contents (< 40 μg g?1) showed much higher RSDs (17–18%). Except for RMs with certified values for sulfur, most data obtained by the combustion infrared detection method generally showed higher concentrations than those measured by ICP‐OES and a better RSD (≤ 8% for all materials except DTS‐2b). |
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| Keywords: | sulfur ICP‐OES combustion infrared detection reference materials soufre ICP‐OES combustion dé tection infrarouge maté riaux de ré fé rence |
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