Rapid and Low Cost Determination of Total Mercury in Cat Foods by Photochemical Vapor Generation Coupled to Atomic Absorption Spectrometry

Silva, Nilvan A; Nobre, Nandressa F; Lopes, Gisele S.

doi:10.1007/s12011-020-02216-6

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…The PVG CVAAS method developed for the analysis of total Hg in pet food samples 27 used a system with a 19 W UV lamp in a configuration that makes use of 185 nm radiation (more energetic) in addition to 284 nm. A better detection limit was achieved but the PVG system has the disadvantage of requiring the sample to be prepared without use of nitric acid and peroxide, as both may present interference effects.…”

Section: Resultsmentioning

confidence: 99%

Infrared radiation-assisted thermochemical vapor generation for mercury speciation by atomic absorption spectrometry

Campos

Brito

Ribeiro

et al. 2023

J. Anal. At. Spectrom.

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Section: Resultsmentioning

confidence: 99%

Infrared radiation-assisted thermochemical vapor generation for mercury speciation by atomic absorption spectrometry

Campos

Brito

Ribeiro

et al. 2023

J. Anal. At. Spectrom.

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“…The developed Hg 2+ –SE offers much better features than the electrodes mentioned in the comparison. Moreover, the analytical performance of the proposed electrode in terms of sensitivity, recovery, and linear concentration range was compared with different analytical techniques [ 63 , 64 , 65 , 66 , 67 , 68 , 69 ]. The Hg 2+ –SE designed in the present study provides better performance than some of the methods mentioned in Table 6 without the need to use the extraction or preconcentration methodology.…”

Section: Resultsmentioning

confidence: 99%

Design and Characterization of Electrochemical Sensor for the Determination of Mercury(II) Ion in Real Samples Based upon a New Schiff Base Derivative as an Ionophore

Alharthi

Fallatah

Al-Saidi

2021

Sensors

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The present paper provides a description of the design, characterization, and use of a Hg2+ selective electrode (Hg2+–SE) for the determination of Hg2+ at ultra-traces levels in a variety of real samples. The ionophore in the proposed electrode is a new Schiff base, namely 4-bromo-2-[(4-methoxyphenylimino)methyl]phenol (BMPMP). All factors affecting electrode response including polymeric membrane composition, concentration of internal solution, pH sample solution, and response time were optimized. The optimum response of our electrode was obtained with the following polymeric membrane composition (% w/w): PVC, 32; o-NPOE, 64.5; BMPMP, 2 and NaTPB, 1.5. The potentiometric response of Hg2+–SE towards Hg2+ ion was linear in the wide range of concentrations (9.33 × 10–8−3.98 × 10–3 molL–1), while, the limit of detection of the proposed electrode was 3.98 × 10–8 molL–1 (8.00 μg L–1). The Hg2+–SE responds quickly to Hg2+ ions as the response time of less than 10 s. On the other hand, the slope value obtained for the developed electrode was 29.74 ± 0.1 mV/decade in the pH range of 2.0−9.0 in good agreement with the Nernstian response (29.50 mV/decade). The Hg2+–SE has relatively less interference with other metal ions. The Hg2+–SE was used as an indicator electrode in potentiometric titrations to estimate Hg2+ ions in waters, compact fluorescent lamp, and dental amalgam alloy and the accuracy of the developed electrode was compared with ICP–OES measurement values. Moreover, the new Schiff base (BMPMP) was synthesized and characterized using ATR–FTIR, elemental analysis, 1H NMR, and 13C NMR. The PVC membranes containing BMPMP as an ionophore unloaded and loaded with Hg(II) are reported by scanning electron microscope images (SEM) along with energy-dispersive X-ray spectroscopy (EDX) spectra.

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Photochemical vapor generation combined with headspace solid phase microextraction for determining mercury species by microwave-induced plasma optical emission spectrometry

Borowska

Jankowski

2022

Microchemical Journal

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Rapid and Low Cost Determination of Total Mercury in Cat Foods by Photochemical Vapor Generation Coupled to Atomic Absorption Spectrometry

Cited by 6 publications

References 38 publications

Infrared radiation-assisted thermochemical vapor generation for mercury speciation by atomic absorption spectrometry

Infrared radiation-assisted thermochemical vapor generation for mercury speciation by atomic absorption spectrometry

Design and Characterization of Electrochemical Sensor for the Determination of Mercury(II) Ion in Real Samples Based upon a New Schiff Base Derivative as an Ionophore

Photochemical vapor generation combined with headspace solid phase microextraction for determining mercury species by microwave-induced plasma optical emission spectrometry

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