還元気化法を利用した水晶振動子による液相中の水銀測定

Translated title of the contribution: Measurement system of mercury in water samples by reduction vaporization method using a quartz crystal microbalance

Kazutoshi Noda, Hitoshi Kodamatani, Takashi Tomiyasu, Kohji Marumoto, Takeshi Komai, Hidenobu Aizawa

Research output: Contribution to journalArticlepeer-review

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 contributionMeasurement system of mercury in water samples by reduction vaporization method using a quartz crystal microbalance
Original languageJapanese
Pages (from-to)50-54
Number of pages5
JournalIEEJ Transactions on Sensors and Micromachines
Volume141
Issue number2
DOIs
Publication statusPublished - 2021 Feb 1

ASJC Scopus subject areas

  • Mechanical Engineering
  • Electrical and Electronic Engineering

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