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• W1970732670 endingPage "1075" @default.
• W1970732670 startingPage "1069" @default.
• W1970732670 abstract "An optical sensor is described for a sensitive and selective spectrophotometric determination of Pb(II) ions in aqueous solution. A sensor membrane based on 4-hydroxy salophen has been developed for the determination of Pb(II) ions that displays excellent performance. The membrane responds to lead(II) ions, giving a color change from colorless to yellow in a buffer solution (pH 3.1). The optode has a linear range of 1.0 × 10−3–1.0 × 10−7 mol L−1 Pb(II) ions with a detection limit of 8.6 × 10−8 mol L−1 Pb(II). The response time is within 10 min depending on the concentration of Pb(II) ions such that it can quantitatively detect Pb(II) even at concentration levels of 8.6 × 10−8 mol L−1 Pb(II) (0.018 ppm). The optode developed here is found to be stable, cost effective, easy to prepare, and efficient for direct determination of Pb(II) in a variety of aqueous samples using spectrophotometry. However, it is for one time use only as the reaction of Pb(II) with 4-hydroxy salophen is irreversible. The optode was successfully used for measuring Pb(II) ions in different water samples and in SRM sample." @default.
• W1970732670 created "2016-06-24" @default.
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• W1970732670 date "2009-12-01" @default.
• W1970732670 modified "2023-09-23" @default.
• W1970732670 title "Highly selective optical-sensing film for lead(II) determination in water samples" @default.
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• W1970732670 doi "https://doi.org/10.1016/j.jhazmat.2009.07.112" @default.
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