Hybrid signal processing in voltammetric determination of chromium(VI)

Jakubowska, Małgorzata

doi:10.1016/j.jhazmat.2009.11.063

Cited by 16 publications

(6 citation statements)

References 62 publications

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“…Various sensor systems have been reported. [14][15][16][17][18][19][20][21][22] Most of these systems, however, have either limitations with respect to simplicity, selectivity, and time consuming for Cr 3+ determination using voltammetric, electrothermal atomic absorption spectrometry, and surface plasmon field-enhanced resonance light scattering. Besides, the diphenylcarbazide colorimetric method is simple and fast, but certain substances react with the 1,5-diphenylcarbazide reagent to form a colored product which is absorbed at 520-540 nm that may obscure or interfere with the quantization of the chromate peak.…”

Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Cr3+ using tripolyphosphate modified gold nanoparticles in aqueous solutions

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Colorimetric detection of Cr3+ using tripolyphosphate modified gold nanoparticles in aqueous solutions

et al. 2012

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“…1−3 There are some common electrodes which are widespread applied as working electrodes in detecting HMIs, such as glassy carbon electrodes (GCEs), noble metal electrodes, dropping mercury electrodes (DMEs), and nanomaterials modified with electrodes. 4,5 Especially nanomaterials modified electrodes have overwhelming advantages compared with other traditional electrodes. 6,7 GCEs, with good electrical conductivity and chemical stability, almost have no obvious electrochemical signals in detecting some types of metal ions, such as As(III), which are relatively difficult to be reduced.…”

Section: ■ Introductionmentioning

confidence: 99%

General Strategies to Construct Highly Efficient Sensing Interfaces for Metal Ions Detection from the Perspective of Catalysis

Xiao

Zhao

et al. 2022

Anal. Chem.

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Constructing high-effective electrode sensing interfaces has been considered an effective method for electrochemical detection toward heavy metal ions (HMIs). However, most research has been devoted to enhancing the stripping currents of HMIs by simply improving the adsorptive capacity and conductivity of the electrode modified materials, while lacking theoretical guidelines in fabricating catalytic sensing interfaces. Besides, the understanding of detection mechanisms is quite unscientific from the perspective of catalysis. This perspective summarizes five general strategies in designing highly efficient sensing interfaces in the recent five years, including modulating crystal phases, orientations and planes, defect engineering, ionic valence state cycle engineering, adsorption in situ catalysis strategy, and construction of atomic level catalytic active sites. What’s more, the catalytic mechanisms for improving the signals of HMIs, such as boosting the electron transfer rates and conversion rates, lowering the energy barriers, etc., are introduced and emphasized. This study has a great significance in directionally controlling functionalized electrochemical sensors to achieve excellent sensitivity and selectivity in detecting environmental pollutants from the view of catalysis, and it also brings enlightenments and guidance to develop new electroanalytical methods.

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“…Cr(III) is known as an essential trace element for maintaining normal physiological function. However, Cr(VI) is highly carcinogenic and mutagenic [1][2][3], and can cause various of clinical problems, such as immediate cardiovascular shock, negative effects on kidney, liver, and other organs [4]. Hence, the research has drawn much attention in detection of trace Cr(VI) in drinking water recently.…”

Section: Introductionmentioning

confidence: 99%

Simple and Sensitive Detection for Trace Chromium (Vi) Using Albumin as Fluorescence Probes

Kuang

Yuan

Feng

et al. 2015

J. Chil. Chem. Soc.

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We have developed a novel method for fast determination of chromium(VI) using egg albumin(EAB) as fluorescence probe. The influence factors, including pH, reaction time, concentration of EAB, were investigated on the performance of the method and the optimum experimental conditions were determined. Under the optimum conditions, the relative fluorescence intensity of albumin was linearly proportional to Cr(VI) over a concentration range from 1.0x10 -7 to 6.0x10 -5 mol L -1 with a correlation coefficient of 0.9936 and a detection limit of 5.2 nmol L -1 . This is a fast, simple, high selective and environment-friendly method, which has been employed to detect trace Cr(VI) in drinking water samples with satisfactory. The infrared spectral information indicated that the possible mechanism of fluorescence quenched may be the change of the secondary structures of EAB in the presence of Cr(VI).

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Hybrid signal processing in voltammetric determination of chromium(VI)

Cited by 16 publications

References 62 publications

Colorimetric detection of Cr3+ using tripolyphosphate modified gold nanoparticles in aqueous solutions

Colorimetric detection of Cr3+ using tripolyphosphate modified gold nanoparticles in aqueous solutions

General Strategies to Construct Highly Efficient Sensing Interfaces for Metal Ions Detection from the Perspective of Catalysis

Simple and Sensitive Detection for Trace Chromium (Vi) Using Albumin as Fluorescence Probes

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