Abstract
To reduce the environmental risks posed by mercury (Hg), a simple and rapid detection system for Hg in the environment is needed. We developed a simple Hg measurement method for detecting of Hg in liquid phase using quartz crystal microbalance (QCM-Hg). Mercury is reduced into Hg0 by adding the reducing solution (SnCl2) to the divalent Hg2+ in the sample solution. Then, Hg is turned into vapor in reactor bottle by flowing air. It (QCM-Hg) utilizes the direct reaction of Hg and the Au electrode of the quartz crystal element via the phenomenon of Au-Hg amalgamation. In the case of 0.0005 mg/L in liquid phase, a frequency shift of about 13 Hz is obtained using a 20 MHz quartz crystal element. This new detection system allows easy measurement of very low concentrations of Hg in liquid phase.
Translated title of the contribution | Measurement system of mercury in water samples by reduction vaporization method using a quartz crystal microbalance |
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Original language | Japanese |
Pages (from-to) | 50-54 |
Number of pages | 5 |
Journal | IEEJ Transactions on Sensors and Micromachines |
Volume | 141 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2021 Feb 1 |
Externally published | Yes |
ASJC Scopus subject areas
- Mechanical Engineering
- Electrical and Electronic Engineering