Recent Developments in the Speciation and Determination of Mercury Using Various Analytical Techniques

Abstract

This paper reviews the speciation and determination of mercury by various analytical techniques such as atomic absorption spectrometry, voltammetry, inductively coupled plasma techniques, spectrophotometry, spectrofluorometry, high performance liquid chromatography, and gas chromatography. Approximately 126 research papers on the speciation and determination of mercury by various analytical techniques published in international journals since 2013 are reviewed.

Recent advances in fluorescence probes based on carbon dots for sensing and speciation of heavy metals

“…For the detection of HMs, the development of selective, sensitive, feasible, practical, and high-throughput analysis methods is desirable. Traditional elemental specific-based approaches such as atomic absorption spectrometry, atomic emission spectrometry, inductively coupled plasma mass spectrometry have high sensitivity and accuracies [4] but require bulky instrumentation, extensive sample pretreatment processes, and sophisticated operators, which limit their application, especially in in situ analyses. A variety of new sensing platforms based on relatively low cost and simple operational routes are alternatives such as electrochemical methods, surface plasmon resonance detections, quartz crystal microbalance, chemiluminescence (CL), fluorescence methods, etc.…”

“…Furthermore, the hardness of different species of the same HM also can vary a lot and needs to adopt different coordination ligands. For instance, As(III) is a typical soft metal, while As(V) is an analog of PO 4 3− belonging to the hard metal group. Also, considering an abundance of interference ions existed in real sample matrices and most of the synthesized CDs with many oxygen-containing functional groups, the interference caused by nontarget ions needs to be systematically investigated, rendering the sufficient selectivity.…”

Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques

“…They stated that substantial enhancement in detectable Raman signals coupled with a unique nanoparticle-based approach made SERS a powerful tool for the detection of Hg(II). Suvarapu and Baek [ 44 ] reviewed the speciation and determination of mercury using various analytical techniques. They discussed research papers published during 2013-2014 on these topics.…”

Nitrogen and sulfur co-doped fluorescent carbon dots for the trapping of Hg(ii) ions from water

“…[9][10][11] Various methods employed for the detection of Hg 2+ ions with detection limits as low as of the order of nM to pM include atomic absorption spectroscopy (AAS), inductively coupled plasma-mass spectrometry (ICP-MS), cold vapor-atomic fluorescence spectroscopy (CV-AFS), as well as electrochemical and optical techniques. [12][13][14][15] Among all these methods, fluorescent chemosensors have provided a sensitive and efficient analytical method for the ultrasensitive detection of Hg 2+ ions. However, the major drawback of these methods is that the proposed technique can either detect a particular metal ion sensitively or scavenge the metal ions separately, thus limiting their practical applications.…”