In-situ measurement of the dissolved S2− in seafloor diffuse flow system: sensor preparation and calibration
| العنوان: | In-situ measurement of the dissolved S2− in seafloor diffuse flow system: sensor preparation and calibration |
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| المؤلفون: | Yiwen Pan, Wei Zhao, Chen-hua Han, Ying Ye, Xia Huang |
| المصدر: | Journal of Zhejiang University-SCIENCE A. 9:423-428 |
| بيانات النشر: | Zhejiang University Press, 2008. |
| سنة النشر: | 2008 |
| مصطلحات موضوعية: | chemistry.chemical_classification, Materials science, General Engineering, Analytical chemistry, Substrate (chemistry), Polymer, Reference electrode, Chemical reaction, Ion selective electrode, symbols.namesake, chemistry, Electrode, symbols, Calibration, Nernst equation |
| الوصف: | The preparation approach and calibration result of an improved type of ion selective electrode (ISE), which is used to measure the total dissolved S2−, are introduced in this paper. The improved Ag/Ag2S electrode uses silver wire as the substrate, which is surrounded by electric polymer containing superfine silver powder. After the stabilization of the epoxy-resin, Ag2S layer was formed by chemical reaction with 0.2 mol/L (NH4)2S solution for 5 min. With Ag/AgCl as reference electrode, the Ag/Ag2S electrode can be used to measure dissolved S2−. The correlation between the measured potentials and the logarithm of dissolved S2− is found to be linear, within range of the concentration of dissolved S2− from 10−2∼10−7 mol/L. The slope of the regression line between measured potential and logarithm of dissolved S2− is about −27.7, which agrees well with the theoretical Nernst value −29.6. Furthermore, the performance of the improved Ag/Ag2S electrode, such as the response time, sensitivity and stability, greatly outweighs the conventional Ag/Ag2S electrode. |
| تدمد: | 1862-1775 1673-565X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::86687911567cfa2146870b56b2ab64b0Test https://doi.org/10.1631/jzus.a071360Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........86687911567cfa2146870b56b2ab64b0 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18621775 1673565X |
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