A novel bulk optode for ultra-trace detection of antimony coupled with spectrophotometry in food and environmental samples

Moustafa, Islam M. I.; Amin, Alaa S.; Darwish, Eman A.

doi:10.1016/j.talo.2023.100197

Cited by 10 publications

(3 citation statements)

References 62 publications

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“…water, basal culture medium, anaerobic sludge plus basal medium [44] Ion-assisted photochemical vapor generation with inductively coupled plasma mass spectrometry 0.0047 lake and river water [12] Bulk optode coupled with spectrophotometry using 6-(4-(2,4-dihydroxyphenyl)diazenyl)phenyl)−2-oxo-4-phenyl-1,2-dihydro pyridine-3-carbo-nitrileas a ionophore 0.85 tap, domestic, sea, ground, lake water, blood plasma, urine [48] Surface-enhanced Raman scattering using silvered porous silicon and phenylfluorone 1 -…”

Section: Sophisticated Instrumental Methodsmentioning

confidence: 99%

Sensitive Silver-Enhanced Microplate Apta-Enzyme Assay of Sb3+ Ions in Drinking and Natural Waters

Komova,

Serebrennikova,

Berlina

et al. 2023

Molecules

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The toxic effects of antimony pose risks to human health. Therefore, simple analytical techniques for its widescale monitoring in water sources are in demand. In this study, a sensitive microplate apta-enzyme assay for Sb3+ detection was developed. The biotinylated aptamer A10 was hybridized with its complementary biotinylated oligonucleotide T10 and then immobilized on the surface of polysterene microplate wells. Streptavidin labeled with horseradish peroxidase (HRP) bound to the biotin of a complementary complex and transformed the 3,3′,5,5′-tetramethylbenzidine substrate, generating an optical signal. Sb3+ presenting in the sample bounded to an A10 aptamer, thus releasing T10, preventing streptavidin-HRP binding and, as a result, reducing the optical signal. This effect allowed for the detection of Sb3+ with a working range from 0.09 to 2.3 µg/mL and detection limit of 42 ng/mL. It was established that the presence of Ag+ at the stage of A10/T10 complex formation promoted dehybridization of the aptamer A10 and the formation of the A10/Sb3+ complex. The working range of the Ag+-enhanced microplate apta-enzyme assay for Sb3+ was determined to be 8–135 ng/mL, with a detection limit of 1.9 ng/mL. The proposed enhanced approach demonstrated excellent selectivity against other cations/anions, and its practical applicability was confirmed through an analysis of drinking and spring water samples with recoveries of Sb3+ in the range of 109.0–126.2% and 99.6–106.1%, respectively.

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Section: Sophisticated Instrumental Methodsmentioning

confidence: 99%

Sensitive Silver-Enhanced Microplate Apta-Enzyme Assay of Sb3+ Ions in Drinking and Natural Waters

Komova,

Serebrennikova,

Berlina

et al. 2023

Molecules

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“…37,38 Significant research has been conducted in our laboratory to develop colorimetric sensors for detecting metal ions. 32,39–43 These sensors provide distinct advantages in terms of sensitivity, selectivity and response time. Moreover, the theoretical basis of such optical membranes based on plasticized polyvinyl chloride (PVC) has been well established.…”

Section: Introductionmentioning

confidence: 99%

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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“…The substances integrated into the sensor play a vital role in extracting analytes into the sensing material and triggering an optical signal that mirrors alterations in analyte concentration. A prevalent approach in many established optodes involves color complexation reactions between analytes and an immobilized ligand [38][39][40][41][42][43][44][45]. This method contributes to the functionality of the sensor, allowing for the detection and quantification of analytes through observable changes in color.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly optical sensor for precise detection of gold ions in diverse matrices through the integration of β-2-hydroxybenzyl-3-methoxy-2-hydroxyazastyrene in a PVC membrane

Hemdan,

Ali,

Amin

2024

Anal Bioanal Chem

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An environmentally conscious methodology is investigated for the precise and discerning identification of trace concentrations of gold ions in diverse matrices. A novel optical sensor membrane is proposed for the determination of Au3+ ions, utilizing the immobilization of β-2-hydroxybenzyl-3-methoxy-2-hydroxyazastyrene (HMHS) entrapped in polyvinyl chloride (PVC). The sensor incorporates sodium tetraphenylborate (Na-TPB) as the ionic additive and dibutyl phthalate (DBP) as a plasticizer. Under optimal conditions, the suggested sensor exhibits a linear calibration response to Au3+ ions within a concentration range of 5.0 to 165 ng mL−1. Detection and quantification limits are specified as 1.5 and 4.8 ng mL−1, respectively, with a rapid response time of 5.0 min. Upon presentation, this optical sensor not only affirms high reproducibility, stability, and an extended operational lifespan but also showcases exceptional selectivity for Au3+ ions. Notably, no discernible interference is observed when assessing the potential influence of other cations and anions on Au3+ ion detection. The adaptability of this optical sensor is validated through its successful application in determining Au3+ ion concentrations across various sample types, including water, environmental, cosmetics, and soil matrices. Graphical Abstract

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A novel bulk optode for ultra-trace detection of antimony coupled with spectrophotometry in food and environmental samples

Cited by 10 publications

References 62 publications

Sensitive Silver-Enhanced Microplate Apta-Enzyme Assay of Sb3+ Ions in Drinking and Natural Waters

Sensitive Silver-Enhanced Microplate Apta-Enzyme Assay of Sb3+ Ions in Drinking and Natural Waters

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

Eco-friendly optical sensor for precise detection of gold ions in diverse matrices through the integration of β-2-hydroxybenzyl-3-methoxy-2-hydroxyazastyrene in a PVC membrane

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