A novel sensor for the selective monitoring of trace ytterbium ions using an agarose-based optical membrane

Amin, Alaa S.; El-Feky, Hesham H.; Hassan, Nader

doi:10.1039/d2ra03947h

Cited by 7 publications

(10 citation statements)

References 61 publications

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“…Tolerance limit a (mg mL −1 ) Foreign ion Tolerance limit a (mg mL −1 ) Na + , Li These ndings highlight the signicantly improved detection limit of the optode compared to previously reported methods. [33][34][35][46][47][48][49][50][51][52][53][54][55] The observed enhancement in sensitivity can be ascribed to the inclusion of Aliquat 336, which enhances the extraction of Cr(VI) ions from the aqueous phase, leading to improved sensitivity of the optode. In comparison to other methods, the optode exhibits superior sensitivity in detecting Cr(VI) ions.…”

Section: Foreign Ionmentioning

confidence: 99%

“…Moreover, the theoretical basis of such optical membranes based on plasticized polyvinyl chloride (PVC) has been well established. [44][45][46][47] To design an optical chemical sensor, a sensitive layer comprising dye indicators such as porphyrin compounds is applied onto a polymer matrix such as PVC and cellulose acetate. 37,38 These polymers not only serve as solid supports for immobilizing indicator dyes, but also provide permeation selectivity for certain species while rejecting others.…”

Section: Introductionmentioning

confidence: 99%

“…48 Several methods have been reported for chromium measurement using optical sensors based on colorimetric techniques. [33][34][35][46][47][48][49][50][51][52][53][54][55] The objective of this study was to create a lm-based sensor (optode), for detecting Cr(VI) by observing color changes and its applications for real samples. The optode employed BDBFM as the indicator, which was immobilized in a CTA matrix with DOP as the plasticizer.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the theoretical basis of such optical membranes based on plasticized polyvinyl chloride (PVC) has been well established. 44–47…”

Section: Introductionmentioning

confidence: 99%

“…48 Several methods have been reported for chromium measurement using optical sensors based on colorimetric techniques. 33–35,46–55…”

Section: Introductionmentioning

confidence: 99%

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Development of an innovative optical sensor to detect extremely low levels of chromium in real samples using colorimetric methods

Darwish,

Alshehri,

Amin

et al. 2024

Environ. Sci.: Adv.

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Section: Foreign Ionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Moreover, the theoretical basis of such optical membranes based on plasticized polyvinyl chloride (PVC) has been well established. 44–47…”

Section: Introductionmentioning

confidence: 99%

“…48 Several methods have been reported for chromium measurement using optical sensors based on colorimetric techniques. 33–35,46–55…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Development of an innovative optical sensor to detect extremely low levels of chromium in real samples using colorimetric methods

Darwish,

Alshehri,

Amin

et al. 2024

Environ. Sci.: Adv.

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Optimization of innovative optical sensor for zirconium determination and capturing from environmental samples

Sari,

Babalghith,

El-Sayed

et al. 2024

Results in Chemistry

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Novel optical optode for selective detection and removal of ultra-trace level of mercury ions in different environmental real samples

Dayra,

Abdelaal,

Khalifa

et al. 2024

Sci Rep

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Owing to the high cost and unavailability of different analytical techniques, there is an urgent need to develop new techniques not only for detecting but also removing mercury ions in real samples. Thus, an optical chemical sensor based on the anchoring of phenanthraquinone monophenylthiosemicarbazone in a plasticized cellulose triacetate membrane was fabricated and applied to the recognition and removal of mercury ions from aqueous solutions. The synthesized optode was characterized by FT-IR, SEM, AFM, and thermal analysis. Several parameters, including the pH, temperature, contact time, washing solvent, and washing time, were optimized. Under optimal conditions, a promising optode film platform was utilized for sensing mercury ions, and the concentrations were calculated based on colorimetric analysis (Histogram, RGB) of digital images, visualization, and spectrophotometry. Also, an optical optode was used for complete adsorption of mercury ions from aqueous solutions. In addition, the regeneration of the synthesized optode was evaluated using 0.1 mol L− 1 nitric acid, which effectively removed all adsorbed mercury ions. The obtained data indicated good linearity in the sensing and adsorption of Hg2+ over a concentration range of 0.005–5000 µgL− 1 with a low limit of detection (LOD = 0.066 µgL− 1) and limit of quantification (LOQ, 0.22 µgL− 1). Furthermore, it showed good distinctions in the presence of coexisting ions, high stability (five months), good applicability, and reproducibility (RSD = 1.31%), making it a promising sensor for Hg2+ detection. On the other hand, the kinetic studies revealed that the pseudo-second-order was the best model for describing the adsorption behavior of mercury ions on the optode surface. Also, the thermodynamic parameters indicate spontaneous (ΔG0 < 0) and endothermic (ΔH0 < 0) reactions. Also, the maximum adsorption capacity was found to be 73.2 mg g− 1. Thus, the optodes were successfully applied for the detection and/or removal of Hg2+ in different real samples, including cucumber, fish, soil, and water samples, with excellent recoveries of 98.1–99.5%.

show abstract

A novel sensor for the selective monitoring of trace ytterbium ions using an agarose-based optical membrane

Abstract: The immobilized optical sensor preparation and its measurement procedure.

Cited by 7 publications

References 61 publications

Development of an innovative optical sensor to detect extremely low levels of chromium in real samples using colorimetric methods

Development of an innovative optical sensor to detect extremely low levels of chromium in real samples using colorimetric methods

Optimization of innovative optical sensor for zirconium determination and capturing from environmental samples

Novel optical optode for selective detection and removal of ultra-trace level of mercury ions in different environmental real samples

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