Development of a deep-sea mercury sensor using <i>in situ</i> anodic stripping voltammetry

Abstract

Therefore, deep-sea mercury monitoring is very important to both the caution of environmental pollution and the exploration of underwater mineral deposits. Due to their high sensitivity, cold vapor atomic absorption spectrometry (CV-AAS) (Chakraborty et al., 2014a, c), cold vapor atomic fluorescence spectrometry (CV-AFS) (Fernandez-Martinez et al., 2015), and inductively coupled plasma mass spectrometry (ICP-MS) (Baya et al., 2015) have been the most commonly used for the measurement of total mercury. All of these techniques require expensive and sophisticated instrumentation combined with complicated sample preparation processes (

Preface: Front edge of submarine mineral resources research in Japan (Part 2)

“…Okamura et al (2015) in the previous issue developed the deep-sea hydrogen sulfide ion (HS -) sensors based on linear sweep voltammetry with three electrodes. Yamamoto et al (2015) developed a Hg sensor based on an anodic stripping voltammetry method. They have successfully detected the hydrothermal plumes in the South Mariana and Okinawa Trough and in the Iheya North hydrothermal field in Okinawa Trough, respectively.…”

Synthesis and Characterization of Ru-MOFs on Microelectrode for Trace Mercury Detection

“…Contrariwise, the electrochemical sensor has its advantages in economy, portability and easy integration. Among electrochemical detection methods, anodic stripping voltammetry has been widely used for trace detection because of its convenience, portability, high sensitivity, low limit of detection (LOD) and real-time monitoring [ 17 , 18 , 19 ]. However, there is still a challenge on how to enhance the specific active sites and improve the electrochemical activity, which severely restricts the Hg sensing performance and limits its utilization in trace detection of Hg in the natural water system.…”

Ratiometric fluorescent test paper based on silicon nanocrystals and carbon dots for sensitive determination of mercuric ions

“…Therefore, the detection of mercury ions as a source of pollution is necessary by governments or societal institutions and the maximum allowable level of mercuric ions has been set to 10 nM by the US Environmental Protection Agency [ 3 ]. Currently, the widely used methods for the determination of mercuric ions include atomic absorption spectroscopy [ 4 ], inductively coupled plasma mass spectroscopy [ 5 ], X-ray fluorescence spectrometry [ 6 ] and anodic stripping voltammetry [ 7 ]. Although these assays are of high sensitivity and selectivity, they are usually expensive and time-consuming, and require tedious sample pretreatments and expensive equipment operated by well-trained technicians.…”