Mercury sorption and desorption on gold: A comparative analysis of surface acoustic wave and quartz crystal microbalance-based sensors
作者： K. M. Mohibul Kabir , Ylias M. Sabri , Ahmad Esmaielzadeh Kandjani , Glenn I. Matthews , Matthew Field
DOI: 10.1021/ACS.LANGMUIR.5B01858
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摘要: Microelectromechanical sensors based on surface acoustic wave (SAW) and quartz crystal microbalance (QCM) transducers possess substantial potential as online elemental mercury (Hg0) vapor detectors in industrial stack effluents. In this study, a comparison of SAW- QCM-based is performed for the detection low concentrations Hg0 (ranging from 24 to 365 ppbv). Experimental measurements finite element method (FEM) simulations allow these with regard their sensitivity, sorption desorption characteristics, response time following exposure at various operating temperatures ranging 35 75 °C. Both were fabricated substrates (ST AT cut SAW QCM devices, respectively) employed thin gold (Au) layers electrodes. The SAW-based sensor exhibited up ∼111 ∼39 times higher magnitudes than did 55 °C, respectively, when exposed conc...
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