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

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

doi:10.1541/ieejsmas.141.50

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

ENV - Environmental Studies for Advanced Society

Research output: Contribution to journal › Article › peer-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 contribution	Measurement system of mercury in water samples by reduction vaporization method using a quartz crystal microbalance
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	https://doi.org/10.1541/ieejsmas.141.50
Publication status	Published - 2021 Feb 1

ASJC Scopus subject areas

Mechanical Engineering
Electrical and Electronic Engineering

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title = "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",

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.",

keywords = "Environmental measurement, Liquid phase, Mercury, Quartz crystal microbalance, Reduction vaporization measurement method",

author = "Kazutoshi Noda and Hitoshi Kodamatani and Takashi Tomiyasu and Kohji Marumoto and Takeshi Komai and Hidenobu Aizawa",

note = "Publisher Copyright: {\textcopyright} 2021 The Institute of Electrical Engineers of Japan.",

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T1 - 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

AU - Noda, Kazutoshi

AU - Kodamatani, Hitoshi

AU - Tomiyasu, Takashi

AU - Marumoto, Kohji

AU - Komai, Takeshi

AU - Aizawa, Hidenobu

PY - 2021/2/1

Y1 - 2021/2/1

N2 - 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.

AB - 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.

KW - Environmental measurement

KW - Liquid phase

KW - Mercury

KW - Quartz crystal microbalance

KW - Reduction vaporization measurement method

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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

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ASJC Scopus subject areas

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