Approach for rapid extraction and speciation of mercury using a microtip ultrasonic probe followed by LC–ICP-MS

López, I. Casado; Cuello, Susana; Cámara, Carmen; Madrid, Yolanda

doi:10.1016/j.talanta.2010.05.013

Cited by 38 publications

(16 citation statements)

References 25 publications

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“…A 2-mm microtip was used to irradiate small (5 mg) samples, which required only 5-min irradiation for total removal of both organic (CH 3 Hg + ) and inorganic (Hg 2+ ) mercury using either acid or enzymatic hydrolysis. Longer irradiation times caused analyte losses by volatilization [37].…”

Section: Ultrasound-assisted Enzymatic Hydrolysis Reactionsmentioning

confidence: 99%

The role of ultrasound in analytical derivatizations

Castro

Priego-Capote

Peralbo‐Molina

2011

Journal of Chromatography B

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Section: Ultrasound-assisted Enzymatic Hydrolysis Reactionsmentioning

confidence: 99%

The role of ultrasound in analytical derivatizations

Castro

Priego-Capote

Peralbo‐Molina

2011

Journal of Chromatography B

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“…Determination of mercury at very low concentration is usually accomplished by cold-vapour atomic absorption spectrometry [8,9], inductive couple plasma mass spectrometry [10], inductive couple plasma-atomic emission spectrometry [11], gas chromatography [12] and isotopic dilution cold-vapour inductive couple plasma mass spectrometry [13]. These methods are time consuming and inconvenient [14], involve complicated instrumentations, require intricate procedures and are difficult to run for in situ analysis [15].…”

Section: Introductionmentioning

confidence: 99%

Amperometric determination of nanomolar mercury(II) by layered double nanocomposite of zinc/aluminium hydroxide-3(4-methoxyphenyl)propionate modified single-walled carbon nanotube paste electrode

Isa

Sharif

Hashim

et al. 2015

Ionics

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A mercury(II) sensor was developed by using single-walled carbon nanotube (SWCNT) paste electrode modified with layered double Zn/Al hydroxide-3(4-methoxyphenyl)propionate nanocomposite (Zn/Al-LDH-MPP). The cyclic voltammetry was optimised at electrode composition 2.5 % (w/w) of Zn/Al-LDH-MPP/SWCNTs, supporting electrolyte 0.4 M potassium chloride, buffering at pH 4.0 and scan rate of 100 mVs −1 . The sensor exhibited a wide linear range from 1 × 10 −3 M to 1 × 10 −7 M Hg 2+ and 1 × 10 −7 M to 1 × 10 −9 M Hg 2+ with a detection limit of 1 × 10 −9 M Hg 2+ . The values of the diffusion coefficients (1.5445 × 10 −9 cm 2 s −1 ), surface charge (524.5 μC s −1/2 ) and surface coverage (4.41 × 10 −2 mol cm −2 ) determined by double potential-step chronocoulometry could probably have contributed to the high sensitivity value obtained. The presence of 25-fold concentration of all metal ions tested showed no influence on the anodic peak current. The electrode was then proposed as the appropriate alternative for the determination of mercury(II).

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“…Conventional analytical techniques were investigated to determine mercury in environmental samples, including cold vapor atomic absorption spectrometry (CVAAS) [8], cold vapor atomic fluorescence spectrometry (CVAFS) [9], or inductively coupled plasma mass spectrometry (IC-PMS) [10], Although these methods are very powerful for heavy metal analysis, they are known to be expensive and not suitable for on-site monitoring owing to their size, and require highly trained personnel. Electroanalytical stripping techniques, however, appear as a valid alternative in these situations.…”

Section: Introductionmentioning

confidence: 99%

Effect of KNO3 to remove silver interferences in the determination of mercury(II): Application in milk and breast milk samples

Farahi

Lahrich

Achak³

et al. 2015

Sensing and Bio-Sensing Research

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a b s t r a c tMercury determination was performed at rotating silver electrode (RSE) using square wave voltammetry (SWV) in electrolytic mixture of HCl (0.1 mol L À1 ) and KNO 3 (0.2 mol L À1 ). The reproducibility, sensitivity and accuracy are good, provided the proper instrumental parameters and supporting electrolyte are used. The relationship between the peak current of mercury(II) and its concentration is linear with regression equation: I(lA) = 0.784 [Hg(II)] + 49.5 (r 2 = 0.9878) in the dynamic range from 1.0 Â 10 À7 to 8.0 Â 10 À4 mol L À1 . The detection limit (DL,3r) and quantification limit (QL,10r) were 4.61 Â 10 À8 mol L À1 and 15.3 Â 10 À8 mol L À1 , respectively. The relative standard deviation (RSD) for seven replicate analysis of a solution containing 5.0 Â 10 À5 mol L À1 was 2.19%. Possible effects of Cu, Co, Fe, MnO 4 , Zn, were investigated but did not cause any significant interferences. Immobilization of mercury(II) on the surface of rotating silver electrode obeyed to the Langmuir adsorption isotherm. The calculated DG°a ds value showed that the interaction between mercury and silver electrodes is mainly controlled by a chemisorption process. This methodology was potentially applied for mercury determination in milk and breast milk samples. Ó 2015 Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http:// creativecommons.org/licenses/by-nc-nd/4.0/).

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Approach for rapid extraction and speciation of mercury using a microtip ultrasonic probe followed by LC–ICP-MS

Cited by 38 publications

References 25 publications

The role of ultrasound in analytical derivatizations

The role of ultrasound in analytical derivatizations

Amperometric determination of nanomolar mercury(II) by layered double nanocomposite of zinc/aluminium hydroxide-3(4-methoxyphenyl)propionate modified single-walled carbon nanotube paste electrode

Effect of KNO3 to remove silver interferences in the determination of mercury(II): Application in milk and breast milk samples

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