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Application of the Quartz Crystal Microbalance Method for Measuring Mercury in the Air of Working Environments Involved to Artisanal and Small-scale Gold Mining (ASGM)

MARUMOTO, Kohji ; NODA, Kazutoshi ; PEREIRA, João P. G. ; LIMA, Marcelo DE OLIVEIRA ; JESUS, Iracina M. DE ; MARUMOTO, Masumi ; AKAGI, Hirokatsu

Analytical Sciences, 2020/12/10, Vol.36(12), pp.1515-1519 [Periódico revisado por pares]

Singapore: The Japan Society for Analytical Chemistry

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Título:
Application of the Quartz Crystal Microbalance Method for Measuring Mercury in the Air of Working Environments Involved to Artisanal and Small-scale Gold Mining (ASGM)
Autor: MARUMOTO, Kohji ; NODA, Kazutoshi ; PEREIRA, João P. G. ; LIMA, Marcelo DE OLIVEIRA ; JESUS, Iracina M. DE ; MARUMOTO, Masumi ; AKAGI, Hirokatsu
Assuntos: air ; Analytical Chemistry ; artisanal small-scale gold mining (ASGM) ; Atomic absorption analysis ; Chemistry ; Developing countries ; Environmental monitoring ; Gold ; Gold mines & mining ; gold shop ; LDCs ; Measurement methods ; Measuring instruments ; Mercury ; Mercury (metal) ; Microbalances ; Mining ; Quartz ; Quartz crystal microbalance ; Quartz crystals ; Spectral analysis ; working environment
É parte de: Analytical Sciences, 2020/12/10, Vol.36(12), pp.1515-1519
Descrição: Artisanal small gold mining (ASGM) is responsible for approximately 40% of the total Hg emissions into the atmosphere worldwide. In developing countries, many people are engaged in ASGM activities. We developed a small, simple Hg measuring device, which detects Hg in the air based on the change of the oscillation frequency of an Au electrode on a quartz crystal microbalance (QCM). This device is called QCM-Hg. We tested the viability of the QCM-Hg in various work settings including a gold mining area and gold shops. In working environments with an airborne Hg concentration of several μg m−3, the changing rate of the oscillation frequency for either 2 or 3 min corresponded with the Hg concentrations measured using the conventional method of gold amalgamation and cold vapor atomic absorption spectrometer (CVAAS). The results revealed that the QCM-Hg is a useful device for real-time Hg monitoring in actual working environments related to ASGM activities and Hg treatment facilities.
Editor: Singapore: The Japan Society for Analytical Chemistry
Idioma: Inglês

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Application of the Quartz Crystal Microbalance Method for Measuring Mercury in the Air of Working Environments Involved to Artisanal and Small-scale Gold Mining (ASGM)

MARUMOTO, Kohji ; NODA, Kazutoshi ; PEREIRA, João P. G. ; LIMA, Marcelo DE OLIVEIRA ; JESUS, Iracina M. DE ; MARUMOTO, Masumi ; AKAGI, Hirokatsu

Singapore: The Japan Society for Analytical Chemistry

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