Mechanistic studies on the trapping and desorption of volatile hydrides and mercury for their determination by electrothermal vaporization-inductively-coupled plasma mass spectrometry

Development of a Next-Generation Fluorescent Turn-On Sensor to Simultaneously Detect and Detoxify Mercury in Living Samples

“…There have been concerted efforts to develop sensitive methods for detecting mercury at low levels in environmental and biological samples. [5][6][7] These include (a) analytical techniques such as inductively coupled plasma optical emission spectrometry (ICP-OES) with detection limit of 0.06 µg 8 , cold vapor atomic absorption spectrometry (CV AAS) which reduces Hg 2+ to elemental mercury Hg(0) and detects the atomic absorption signature of Hg with a detection limit of 0.7ng 9 and inductively coupled plasma mass spectrometry (ICP-MS) with a detection limit of 0.001 ppb 10,11 (b) fluorescent and colorimetric sensors, 5 (c) surfaceenhanced Raman spectroscopy (SERS) based sensors 12 (d) ratiometric sensors, 13 (e) photoelectrochemical sensors, 14 (f) label-free sensors, 15 (g) micro-electromechanical sensors based on surface acoustic wave and quartz crystal microbalance, 16 (h) naked eye sensors 17 (i) reusable DNA-functionalized hydrogels 18 and surfaces 19 and others. [20][21][22][23][24] We have earlier developed a rhodamine−rhodanine based 'turn-on' fluorescent sensor (RR1) for real-time monitoring of inorganic mercury (Hg 2+ ) uptake in cells and zebrafish larvae.…”

A New Electrochemical Sensor Based on Task-Specific Ionic Liquids-Modified Palm Shell Activated Carbon for the Determination of Mercury in Water Samples

“…Interests in the determination of trace amount of mercury ions have significantly increased during the past few years due to growing environmental concerns. Several analytical techniques, including, cold vapor atomic absorption spectrometry (CV-AAS) [ 1 – 3 ], inductively coupled plasma optical emission spectrometry (ICP-OES) [ 4 , 5 ], X-ray fluorescence spectrometry [ 6 ], inductively coupled plasma mass spectrometry (ICP-MS) [ 7 , 8 ] and cold vapour atomic fluorescence spectrometry (CV-AFS) [ 9 – 11 ] have been applied for the determination of trace amounts of mercury in analytical samples. These methods have good sensitivity, and well controlled experimental conditions.…”

Comparison of Mercury Vapor Pressure of Silver Amalgam-Based Electrode Materials Using AAS

“…Beside direct evaporation of liquid form of mercury applied in this work, there are also ways of yielding an elementary form of mercury from its cationic form bounded in substances, namely chemical mercury cold vapor generation (CMCVG) (Welz and Sperling 1999) and electrochemical mercury cold vapor generation (EcMCVG) (Arbab-Zavar et al 2003;Cerveny et al 2007). For preconcentration, in-situ collection of atomic mercury using graphite furnace as a trapping device and release=desorption cell (Dedina and Tsalev 1995) suitably covered or commercially coated, mainly by gold of various modifications, e.g., gold-platinum gauze (Krishna et al 2005;Duarte et al 2009) and tubes coated with gold (Matousek et al 2002;Torres et al 2005;Cerveny et al 2007) is frequently used. The aim of this work was to show the difference between mercury vapor pressure above silver amalgam-based electrode materials and above liquid mercury, respectively dental amalgam to outline a scale of toxicity danger of using these materials.…”