An innovative approach in titanium determination based on incorporating 2-amino-4-((4-nitrophenyl)diazenyl)pyridine-3-ol in a PVC membrane

Alshehri, R. F.; Hemdan, M.; Babalghith, A. O.; Amin, A. S.; Darwish, E. R.

doi:10.1039/d3ra06679g

Cited by 9 publications

(1 citation statement)

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“…Transduction methods in optical sensors encompass the conversion of absorbance measurements into corresponding signals conveying information about the analyte. Optical absorption [ 30 ], fluorescence [ 31 ], and reflectance [ 32 ] stand out as extensively utilized techniques in optical chemical sensors. These approaches enhance the versatility and efficacy of optodes, rendering them selective and sensitive instruments for analytical purposes.…”

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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Section: Introductionmentioning

confidence: 99%