Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media
In this study, an optical sensor, JA/(2,6-di((E)-benzylidene)cyclohexan-1-one), was synthesized and characterized using 1H NMR and FT-IR spectroscopy. The sensor exhibited high efficiency and selectivity in detecting Pb2+ ions, even in the presence of potential interfering ions such as Mn2+, Cu2+, C...
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| Language: | English |
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Elsevier
2025-01-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024171563 |
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| author | Maria Sadia Jehangir Khan Rizwan Khan Syed Wadood Ali Shah Adil Zada Muhammad Zahoor Riaz Ullah Essam A. Ali |
| author_facet | Maria Sadia Jehangir Khan Rizwan Khan Syed Wadood Ali Shah Adil Zada Muhammad Zahoor Riaz Ullah Essam A. Ali |
| author_sort | Maria Sadia |
| collection | DOAJ |
| description | In this study, an optical sensor, JA/(2,6-di((E)-benzylidene)cyclohexan-1-one), was synthesized and characterized using 1H NMR and FT-IR spectroscopy. The sensor exhibited high efficiency and selectivity in detecting Pb2+ ions, even in the presence of potential interfering ions such as Mn2+, Cu2+, Co2+, Cr3+, Ni2+, Ce3+, Hg2+, and Cd2+ in aqueous solutions. The interaction of JA with Pb2+ resulted in a significant enhancement of fluorescence intensity, suggesting the formation of a stable complex. A 2:1 binding ratio between JA and Pb2+ was confirmed through fluorometric analysis, absorption spectra, and theoretical calculations (DFT). The association constant for the complex was calculated to be 3 × 106 M−2. The sensor demonstrated high sensitivity towards Pb2+ with a detection limit of 5 × 10−7 M. Additionally, JA was successfully reused by applying EDTA to release Pb2+ from the sensor. Real sample analysis under optimized conditions of pH, time, and concentration of JA and Pb2+ further validated the practical applicability of the sensor. |
| format | Article |
| id | doaj-art-42524705359f4732a99aa8869bb139e0 |
| institution | Kabale University |
| issn | 2405-8440 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj-art-42524705359f4732a99aa8869bb139e02025-01-17T04:50:13ZengElsevierHeliyon2405-84402025-01-01111e41125Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous mediaMaria Sadia0Jehangir Khan1Rizwan Khan2Syed Wadood Ali Shah3Adil Zada4Muhammad Zahoor5Riaz Ullah6Essam A. Ali7Department of Chemistry, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, PakistanDepartment of Chemistry, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, PakistanDepartment of Electrical Engineering, Kwangwoon University, Seoul, South KoreaDepartment of Pharmacy, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, PakistanDepartment of Chemistry, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, PakistanDepartment of Biochemistry, University of Malakand, Chakdara, Lower Dir, Khyber Pakhtunkhwa, Pakistan; Corresponding author.Department of Pharmacognosy, College of Pharmacy, King Saud University, Riyadh, Saudi ArabiaDepartment of Pharmaceutical Chemistry, College of Pharmacy King Saud University, Riyadh Saudi ArabiaIn this study, an optical sensor, JA/(2,6-di((E)-benzylidene)cyclohexan-1-one), was synthesized and characterized using 1H NMR and FT-IR spectroscopy. The sensor exhibited high efficiency and selectivity in detecting Pb2+ ions, even in the presence of potential interfering ions such as Mn2+, Cu2+, Co2+, Cr3+, Ni2+, Ce3+, Hg2+, and Cd2+ in aqueous solutions. The interaction of JA with Pb2+ resulted in a significant enhancement of fluorescence intensity, suggesting the formation of a stable complex. A 2:1 binding ratio between JA and Pb2+ was confirmed through fluorometric analysis, absorption spectra, and theoretical calculations (DFT). The association constant for the complex was calculated to be 3 × 106 M−2. The sensor demonstrated high sensitivity towards Pb2+ with a detection limit of 5 × 10−7 M. Additionally, JA was successfully reused by applying EDTA to release Pb2+ from the sensor. Real sample analysis under optimized conditions of pH, time, and concentration of JA and Pb2+ further validated the practical applicability of the sensor.http://www.sciencedirect.com/science/article/pii/S2405844024171563SensitivityOptical probeToxic metalsAqueous solutionDFT studies |
| spellingShingle | Maria Sadia Jehangir Khan Rizwan Khan Syed Wadood Ali Shah Adil Zada Muhammad Zahoor Riaz Ullah Essam A. Ali Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media Heliyon Sensitivity Optical probe Toxic metals Aqueous solution DFT studies |
| title | Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media |
| title_full | Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media |
| title_fullStr | Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media |
| title_full_unstemmed | Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media |
| title_short | Trace level detection of Pb2+ ion using organic ligand as fluorescent-on probes in aqueous media |
| title_sort | trace level detection of pb2 ion using organic ligand as fluorescent on probes in aqueous media |
| topic | Sensitivity Optical probe Toxic metals Aqueous solution DFT studies |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024171563 |
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