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Highly selective sol-gel derived optical sensor using 2,6-dichlorophenolindophenol for the sensitive determination of aqueous iron(III).
- Source :
- Instrumentation Science & Technology; 2023, Vol. 51 Issue 6, p621-633, 13p
- Publication Year :
- 2023
-
Abstract
- The design and fabrication of a novel high-sensitivity optical sensor is reported that is highly selective for aqueous Fe<superscript>3+</superscript>. 2,6-Dichlorophenolindophenol is embedded in a film by the sol-gel method, which plays the role of the sensing element for Fe<superscript>3+</superscript>. The sensor selectively determined Fe(III) ion across a wide dynamic range from 1.70 × 10<superscript>−8</superscript> to 3.31 × 10<superscript>−3</superscript> M at pH 4.4 with a detection limit of 1.22 × 10<superscript>−8</superscript> M. The response of the sensor is fully reversible and is selective for Fe<superscript>3+</superscript>. The microporous nature of the stable sol-gel coating provides a unique optical membrane that gives reliable measurements. In addition, the sensor exhibits a long lifetime, long-term stability, and good repeatability. This sensor was successfully used to determine Fe<superscript>3+</superscript> in tap and river water and showed satisfactory results. [ABSTRACT FROM AUTHOR]
- Subjects :
- OPTICAL sensors
IRON
DRINKING water
SOL-gel processes
DETECTION limit
CHEMORECEPTORS
Subjects
Details
- Language :
- English
- ISSN :
- 10739149
- Volume :
- 51
- Issue :
- 6
- Database :
- Complementary Index
- Journal :
- Instrumentation Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 171339754
- Full Text :
- https://doi.org/10.1080/10739149.2023.2184830