Stripping Voltammetric Determination of Mercury in Fish Oil Capsules Using a Screen‐printed Gold Electrode

Squissato, André L.; Rocha, Diego P.; Almeida, Eduardo Santos; Richter, Eduardo M.; Muñoz, Rodrigo A.A.

doi:10.1002/elan.201700570

Cited by 20 publications

(7 citation statements)

References 29 publications

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“…In a study, Squissato et al (2018) investigated the mercury levels in fish oil using CV and SP electrodes. LOD was measured to be 0.25 μg•L −1 within a linear range between 5 and 400 μg•L −1 , and given the measured LOD, the mercury levels in fish oil were detected to be below the desired LOD.…”

Section: Results Of Wide Range Calibration Of Heavy Metalsmentioning

confidence: 99%

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Kiani

Beheshti

Borghei

et al. 2021

J. Food Process. Preserv.

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Electronic simulation of the five senses has received attention for many years. Additionally, electronic tongue (e-tongue) is a concept created for the electronic detection of tastes. Today, this concept is used more generally and means the identification and detection in the presence of liquid (Kaushal & Mudhalwadkar, 2020). In e-tongue, an array of sensors converts the chemical compounds of an unknown solution into an electrical signal. The responses are transferred to the processing unit. In the processing unit, the information hidden in the responses is drawn out using pattern recognition methods and used to analyze the analyte. The array responses consisting of

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Section: Results Of Wide Range Calibration Of Heavy Metalsmentioning

confidence: 99%

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Kiani

Beheshti

Borghei

et al. 2021

J. Food Process. Preserv.

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“…Figure S5 shows the results obtained for current peak evolution for a solution of 30 ng mL –1 Hg(II) in 0.1 M HCl along 100 measurements on the LT-SPGE under 300 rpm of stirring rate. We choose this rate as a good compromise between high signals and signal stability, although according to Squissato et al, 32 higher stirring values are also applicable. RSD was 8% for the 100 measurements and 3% considering the first 50 measurements only.…”

Section: Resultsmentioning

confidence: 99%

“…Nevertheless, methods reported in the literature for voltammetric analysis focus on the soluble species Hg(II), most of them employing gold electrodes, including solid gold disk or gold film electrodes 25 − 28 or screen-printed gold electrodes, SPGEs. 29 − 32 …”

Section: Introductionmentioning

confidence: 99%

Screen-Printed Gold Electrodes as Passive Samplers and Voltammetric Platforms for the Determination of Gaseous Elemental Mercury

2021

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We present a methodology for the determination of gaseous elemental mercury (GEM). It is based on passive sampling of Hg on screen-printed gold electrodes (SPGEs), followed by the measurement of amalgamated mercury by square wave anodic stripping voltammetry. We have explored in detail the behavior of the SPGE electrode surface during the sampling process (by time-of-flight secondary ion mass spectrometry), the stability of the voltammetric signals, and the inter-electrode reproducibility, and obtained acceptable results. Adsorption of mercury onto the SPGE follows a nearly linear behavior until the sorbent becomes saturated (equilibrium phase) for different mercury concentrations, allowing to select a sampling time of 30 min for calibration. The theoretical behavior of the sampling system was modeled, considering the changes in the diffusive path length between the porous diffusive barrier and the adsorbed surface, L . Finally, we have tested two GEM calibration protocols. The first one is based on the measurement of the mercury stripping peak area, A Hg , and the second one is based on the measurement of the mass of mercury, m Hg , by standard additions. We found good correlation coefficients between the GEM concentration for both A Hg ( R 2 = 0.9591) and m Hg ( R 2 = 9615) in the range of 5.82 to 59.29 ng dm –3 GEM. Detection limits were 5.32 and 5.22 ng dm –3 for A Hg and m Hg , respectively. Our results open a new line of electroanalytical strategies for the determination of GEM in atmospheric samples.

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“…Standard solutions of HMs (Cd 2+ , Pb 2+ , Cu 2+ and Hg 2+ ) were added to the buffer solution. Square wave stripping voltammetry (SWSV) carried out firstly at a fixed deposition potential of −1.6 V for 120 seconds under stirring at 400 rpm for HMs pre‐concentration (which is an appropriate stirring velocity without causing any turbulence) . Stripping performed secondly with SWV in the potential range between −1.6 V and +0.4 V (step potential of 0.004 V, square wave amplitude 0.025 V and square wave frequency 15 Hz).…”

Section: Methodsmentioning

confidence: 99%

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺

et al. 2018

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A novel electrochemical sensor based on glassy carbon electrode (GCE) modified by poly (1,2‐diaminoanthraquinone) (P1,2‐DAAQ) has been developed for individual and simultaneous determination of Cd2+, Pb2+, Cu2+ and Hg2+ using square wave anodic stripping voltammetry (SWASV). P1,2‐DAAQ was characterized by cyclic voltammetry (CV) and scan electron microscope (SEM). Several analytical parameters such as the type of electrolyte solution, polymer film thickness, metal deposition time and deposition potential were investigated and optimized. Optimal conditions were obtained by using five scan cycles for polymer synthesis and 120 seconds at −1.6 V for metal electrodeposition in acetate buffer solution. Good linear responses to Cd2+, Pb2+, Cu2+ and Hg2+ in the concentration range from 0 to 120 μg/L were obtained. The limit of detections (LOD) for simultaneous determination of Cd2+, Pb2+, Cu2+ and Hg2+ were 0.3 μg/L, 0.58 μg/L, 1.94 μg/L and 0.26 μg/L, respectively. The developed method was also applied for their detection in real water samples for which favorable results obtained compared with those obtained using inductively coupled plasma – optical emission spectroscopy (ICP‐OES).

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Stripping Voltammetric Determination of Mercury in Fish Oil Capsules Using a Screen‐printed Gold Electrode

Cited by 20 publications

References 29 publications

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Screen-Printed Gold Electrodes as Passive Samplers and Voltammetric Platforms for the Determination of Gaseous Elemental Mercury

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺

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Stripping Voltammetric Determination of Mercury in Fish Oil Capsules Using a Screen‐printed Gold Electrode

Cited by 20 publications

References 29 publications

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Application of a voltammetric electronic tongue combined with chemometric approaches for the early classification of heavy metals in sunflower oil

Screen-Printed Gold Electrodes as Passive Samplers and Voltammetric Platforms for the Determination of Gaseous Elemental Mercury

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd2+, Pb2+, Cu2+ and Hg2+

Contact Info

Product

Resources

About

Novel Sensor Based on Poly (1,2‐Diaminoanthraquinone) for Individual and Simultaneous Anodic Stripping Voltammetry of Cd²⁺, Pb²⁺, Cu²⁺ and Hg²⁺