Direct determination of mercury at picomole L⁻¹levels in bottled water by isotope dilution cold-vapor generation inductively coupled plasma mass spectrometry

Evaluating the role of re-adsorption of dissolved Hg2+ during cinnabar dissolution using isotope tracer technique

“…Dissolved 201 Hg and 202 Hg in the filtrates were analyzed using an isotope dilution method. Upon analysis, 44.2 L 199 HgCl 2 (453 g L −1 as Hg) was spiked into 2 mL filtrate, mixed thoroughly, diluted to 20 mL and then stabilized for 1 h. 199 Hg 2+ , 201 Hg 2+ and 202 Hg 2+ in the solutions were detected by a flow injection mercury analysis system (FIAS, from PerkinElmer) coupled with inductively coupled plasma mass spectrometry (ICP-MS, Elan DRC-e from PerkinElmer) following the method of isotope dilution technique [30]. Details can be found in the Supplementary Data.…”

l-cysteine-induced degradation of organic mercury as a novel interface in the HPLC-CV-AFS hyphenated system for speciation of mercury

“…6 Recently many new methods have been developed to generate mercury vapor for determination by AFS including photo-induced chemical vapor generation such as low molecule weight alcohol, aldehyde, carboxylic acid, mercaptoethanol [15][16][17][18][19][20] and coating of thin layer of NaBH 4 solution, 11 intermittent flow electrochemical cold vapor generation, 21 ultrasound-assisted vapor generation.…”

“…Element specific detectors coupled with HPLC included inductively coupled plasma mass spectrometry (ICP-MS), 1,[4][5][6] atomic absorption spectrometry (AAS) 7,8 and atomic fluorescence spectrometry (AFS). [9][10][11] Because of its high sensitivity and selectivity, as well as low running cost, atomic fluorescence spectrometry (AFS) has been widely used as the elemental specific detector in speciation of Hg, As and Se.…”

Ultra-trace determination of mercury in water by cold-vapor generation isotope dilution mass spectrometry

“…2,3 Over the last decade, numerous methods have been developed for the determination of Hg in natural waters, snow and ice with reported detection limits in the range of 0.13 pg ml À1 (ppt) to 14 ng ml À1 (ppb). [2][3][4][5][6][7][8][9][10][11][12][13][14][15] Among these techniques, cold-vapor generation atomic absorption spectrometry (CVAAS) is one of the most commonly used owing to its simplicity, high sensitivity and sub-ppt detection power. Coldvapor generation with/without preconcentration on a gold trap has also been coupled to inductively coupled plasma mass spectrometry (ICP-MS) for determination of Hg at ultratrace levels in waters.…”

“…Coldvapor generation with/without preconcentration on a gold trap has also been coupled to inductively coupled plasma mass spectrometry (ICP-MS) for determination of Hg at ultratrace levels in waters. [3][4][5]15 Reported detection limits range from 0.13 to 0.20 ppt. Enhanced performance can be achieved when isotope dilution (ID) calibration is applied, which generally provides for higher accuracy and precision.…”