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Kamel RM, El-Sakka SS, Abbas MMA, Soliman MHA. Eco-friendly Fluorescent Sensor for Sensitive and Selective Detection of Zn 2+ and Fe 3+ Ions: Applications in Human Hair Samples. J Fluoresc 2024:10.1007/s10895-024-03798-3. [PMID: 38958904 DOI: 10.1007/s10895-024-03798-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 06/06/2024] [Indexed: 07/04/2024]
Abstract
A new eco-friendly sensor, 3-((6-((4-chlorobenzylidene)amino)pyridin-2-yl)imino)indolin-2-one (CBAPI) was synthesized and well characterized. The CBAPI sensor was employed for detecting Zn2+ and Fe3+ ions. It exhibited a low limit of detection at pH 6.0, with values of 2.90, for Zn2+ and 3.59 nmol L-1 for Fe3+ ions. The sensor demonstrated high selectivity over other interfering cations. Additionally, the high binding constants reflect the great affinity of sensor towards Zn2+ and Fe3+ ions. To further validate its quantification ability for Zn2+ ions, the synthesized CBAPI sensor was used to determine Zn levels in human hair samples, and the results were confirmed using atomic absorption spectroscopy (AAS). The AGREE metric tool was used to assess the method's environmental impact and practical applicability. These positive outcomes indicated that the new method for detecting Zn2+ and Fe3+ ions is environmentally friendly and safe for humans. The developed CBAPI sensor represents a potential development in metal ion detection, combining sensitivity, selectivity, and rapidity.
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Affiliation(s)
- Rasha M Kamel
- Chemistry Department, Faculty of Science, Suez University, Suez, 43518, Egypt.
| | - Sahar S El-Sakka
- Chemistry Department, Faculty of Science, Suez University, Suez, 43518, Egypt
| | - Maram M A Abbas
- Chemistry Department, Faculty of Science, Suez University, Suez, 43518, Egypt
| | - M H A Soliman
- Chemistry Department, Faculty of Science, Suez University, Suez, 43518, Egypt
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2
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Kamel RM. Fabrication of Luminescent Microtiterplate Using Terbium Complex for Phenol Screening in Seawater Samples. J Fluoresc 2024:10.1007/s10895-024-03639-3. [PMID: 38457077 DOI: 10.1007/s10895-024-03639-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2024] [Accepted: 02/26/2024] [Indexed: 03/09/2024]
Abstract
Tb(III)-2-aminoterphthalate complex Tb2-(ATPh)3 was synthesized and characterized using FT-IR, thermal analysis and elemental analysis. Tb2(ATPh)3 microtiter plate was fabricated through embedding Tb(III) complex in polyvinyl chloride membrane and used for environmental determination of phenol in sea water samples. The calculated detection (DL), quantification (QL) limits, and binding constant (KD) were 00.63 µmol L- 1, 2.10 µmol L- 1 and 1.32 × 104 mol- 1 L, respectively. The fabricated microtiter plates exhibited high selectivity towards phenol over other hydrocarbon compounds. Furthermore, AGREE metric tool was used to assess the method's green nature as well as its practicability and applicability. These merit outcomes provide that the new method for phenol detection was environmentally benign and safe to humans. The prepared Tb2(ATPh)3 MTP was validated through using gas chromatography for monitoring phenol in Suez Bay water accurately with high precision. The obtained results encouraged using Tb2(ATPh)3 MTP for efficient, fast, selective, and direct screening of phenol in real samples.
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Affiliation(s)
- Rasha M Kamel
- Faculty of Science, Chemistry Department, Suez University, Suez, 43518, Egypt.
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3
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Soliman MH, El-Sakka SS, Fathy AS, Kamel RM. Synthesis, Characterization and Photophysical Properties of New 2(3H) Furanone Derivatives. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.134543] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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4
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Zheng A, Gong CB, Chow CF. Selective Detection of Methomyl Pesticide by a Catalytic Chemosensing Assay. Chemistry 2020; 26:14461-14466. [PMID: 32734646 DOI: 10.1002/chem.202002882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 07/16/2020] [Indexed: 11/11/2022]
Abstract
The catalytic chemosensing assay (CCA), a new indicator displacement assay, was developed for selective detection of methomyl, a highly toxic pesticide. Trimetallic complex {[FeII (dmbpy)(CN)4 ]-[PtII (DMSO)Cl]2 -[RuII (bpy)2 (CN)2 ]} (1; dmbpy=4,4'-dimethyl-2,2'-bipyridine, bpy=2,2'-bipyridine) was synthesized as a task-specific catalyst to initially reduce and degrade methomyl to CH3 SH/CH3 NH2 /CH3 CN/CO2 . The thus-produced CH3 SH interacts with the trimetallic complex to displace the cis-[RuII (bpy)2 (CN)2 ] luminophore for monitoring. Other pesticides, including organophosphates and similar carbamate pesticides, remained intact under the same catalytic conditions; a selective sensing signal is only activated when 1 recognizes methomyl. Furthermore, 1 can be applied to detect methomyl in real water samples. In the luminescent mode of the assay, the method detection limit (MDL) of 1 for methomyl (LD50 =17 mg kg-1 ) was 1.12 mg L-1 .
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Affiliation(s)
- Anxun Zheng
- Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po Hong Kong SAR, P. R. China
| | - Cheng-Bin Gong
- College of Chemistry and Chemical Engineering, Southwest University, Chong Qing, P. R. China
| | - Cheuk-Fai Chow
- Department of Science and Environmental Studies, The Education University of Hong Kong, 10 Lo Ping Road, Tai Po Hong Kong SAR, P. R. China
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Georgieva I, Zahariev T, Aquino AJA, Trendafilova N, Lischka H. Energy transfer mechanism in luminescence Eu(III) and Tb(III) complexes of coumarin-3-carboxylic acid: A theoretical study. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 240:118591. [PMID: 32585405 DOI: 10.1016/j.saa.2020.118591] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/03/2020] [Accepted: 06/06/2020] [Indexed: 06/11/2023]
Abstract
Excited state energy level diagrams of coumarin-3-carboxylic acid (HCCA) chromophore, Eu(CCA)Cl2(H2O)2 (1), Eu(CCA)2Cl(H2O)2 (2), Eu(CCA)3(H2O)3 (3), Tb(CCA)2Cl(H2O) (4) and Tb(CCA)2(NO3)(H2O) (5) in gas phase and polar solution have been calculated by means of DFT/TDDFT/ωB97XD methods. Based on these results, the ability of CCA to sensitize Eu(III) and Tb(III) luminescence has been examined. The competitive excited state processes in the complexes - fluorescence, intersystem crossing (ISC) and phosphorescence, were analyzed depending on the environment, number of the ligands, Ln(III) ion type (Eu and Tb) and counteranion (Cl- and NO3-). It has been found that the environment altered the S1 state energy, oscillator strength, fluorescence lifetime as well as the S1 character - polar solution stabilized the S1(ππ*) state, whereas non-polar solution (gas phase, solid state) stabilized the S1(nπ*) state. The S1(nπ*) state was decisive for the efficient energy transfer as it suppressed the S1 emission of CCA and favored ISC or direct transfer to the emitting levels of Eu(III). The HCCA triplet (T1) state minimum energy (~2.7, ~2.6ZPE eV) and (ππ*) character were retained in Eu/Tb-CCA complexes regardless of the environment. The energy gap between the higher energy T1 donor state and the acceptor levels 5D1 of Eu(III) (~0.5 eV) and 5D4 of Tb(III) (~0.1 eV) provided optimal resonance conditions for effective energy transfer for Eu(III), but less probability for Tb(III). The nonradiative energy (CCA → Eu(III)) transfer rates and quantum luminescence yield for 2 and 3 were calculated by a strategy combining DFT geometries, INDO/S excitation energies and calculated Judd-Ofelt parameters. The excitation channel T1 → 5D0 through an exchange mechanism was predicted as the most probable one to populate the main emissive Eu-centered state in complexes 2 and 3. The more efficient luminescence of 3 than that of 2 was discussed and explained.
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Affiliation(s)
- Ivelina Georgieva
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev, Str. Bld 11, Sofia 1113, Bulgaria.
| | - Tsvetan Zahariev
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev, Str. Bld 11, Sofia 1113, Bulgaria
| | - Adelia J A Aquino
- Department of Mechanical Engineering, Texas Tech University, Lubbock, TX 79409, USA; School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Natasha Trendafilova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Acad. G. Bonchev, Str. Bld 11, Sofia 1113, Bulgaria
| | - Hans Lischka
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China; Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
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Signal optimized rough silver nanoparticle for rapid SERS sensing of pesticide residues in tea. Food Chem 2020; 338:127796. [PMID: 32805691 DOI: 10.1016/j.foodchem.2020.127796] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Revised: 07/24/2020] [Accepted: 08/06/2020] [Indexed: 01/19/2023]
Abstract
Trace detection of toxic chemicals in foodstuffs is of great concern in recent years. Surface-enhanced Raman scattering (SERS) has drawn significant attention in the monitoring of food safety due to its high sensitivity. This study synthesized signal optimized flower-like silver nanoparticle-(AgNP) with EF at 25 °C of 1.39 × 106 to extend the SERS application for pesticide sensing in foodstuffs. The synthesized AgNP was deployed as SERS based sensing platform to detect methomyl, acetamiprid-(AC) and 2,4-dichlorophenoxyacetic acid-(2,4-D) residue levels in green tea via solid-phase extraction. A linear correlation was twigged between the SERS signal and the concentration for methomyl, AC and 2,4-D with regression coefficient of 0.9974, 0.9956 and 0.9982 and limit of detection of 5.58 × 10-4, 1.88 × 10-4 and 4.72 × 10-3 µg/mL, respectively; the RSD value < 5% was recorded for accuracy and precision analysis suggesting that proposed method could be deployed for the monitoring of methomyl, AC and 2,4-D residue levels in green tea.
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Rujiralai T, Cheewasedtham W, Jayeoye TJ, Kaewsara S, Plaisen S. Hydrolyzed Product Mediated Aggregation of l-Cysteine-Modified Gold Nanoparticles as a Colorimetric Probe for Carbamate Residues in Chilis. ANAL LETT 2019. [DOI: 10.1080/00032719.2019.1659804] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Thitima Rujiralai
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Analytical Chemistry and Environment Research Unit, Division of Chemistry, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand
| | - Wilairat Cheewasedtham
- Analytical Chemistry and Environment Research Unit, Division of Chemistry, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand
| | - Titilope John Jayeoye
- Analytical Chemistry and Environment Research Unit, Division of Chemistry, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand
- Department of Chemistry/Biochemistry/Molecular Biology, Alex Ekwueme Federal University, Ndufu Alike Ikwo, Abakaliki, Ebonyi State, Nigeria
| | - Sujitra Kaewsara
- Department of Chemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Siwat Plaisen
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
- Analytical Chemistry and Environment Research Unit, Division of Chemistry, Department of Science, Faculty of Science and Technology, Prince of Songkla University, Pattani, Thailand
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8
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Polished silver solid amalgam electrode and cationic surfactant as tool in electroanalytical determination of methomyl pesticide. Talanta 2018; 189:389-396. [DOI: 10.1016/j.talanta.2018.07.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 07/09/2018] [Accepted: 07/11/2018] [Indexed: 11/18/2022]
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9
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Anwar ZM, Ibrahim IA, Abdel-Salam ET, Kamel RM, El-Asfoury MH. A luminescent europium complex for the selective detection of trace amounts of aldicarb sulfoxide and prometryne. J Mol Struct 2017. [DOI: 10.1016/j.molstruc.2017.01.043] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Maji S, Kumar S, Sankaran K. Luminescence of uranyl ion complexed with 2,6-pyridine dicarboxylic acid as ligand in acetonitrile medium: observation of co-luminescence. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2016-2718] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Luminescence from UO2
2+ (uranyl ion) complexed with 2,6-pyridine dicarboxylic acid (PDA) has been studied using acetonitrile (MeCN) as solvent between pH 1.0 and 6.0. The enhancement in luminescence intensity because of sensitization by PDA in the non-aqueous environment provided by the MeCN is found to be one order better than in aqueous medium. The luminescence is further enhanced by about four times following the addition of Y3+; a process known as co-luminescence. This is the first study on co-luminescence of uranyl ion in its PDA complex. Lifetime studies indicate the presence of two species having different micro-environments. Formations of both intra and inter molecular complexes are believed to be responsible for enhancement due to co-luminescence.
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Affiliation(s)
- Siuli Maji
- Materials Chemistry Division , Indira Gandhi Centre for Atomic Research , Kalpakkam 603 102 , Tamil Nadu, India
| | - Satendra Kumar
- Materials Chemistry Division , Indira Gandhi Centre for Atomic Research , Kalpakkam 603 102 , Tamil Nadu, India
| | - Kannan Sankaran
- Materials Chemistry Division , Indira Gandhi Centre for Atomic Research , Kalpakkam 603 102 , Tamil Nadu, India
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Costa DJ, Santos JC, Sanches-Brandão FA, Ribeiro WF, Salazar-Banda GR, Araujo MC. Boron-doped diamond electrode acting as a voltammetric sensor for the detection of methomyl pesticide. J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.02.036] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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12
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Sensitive and selective fluorescent chemosensor for the detection of some organophosphorus pesticides using luminescent Eu(III) complex. J Photochem Photobiol A Chem 2016. [DOI: 10.1016/j.jphotochem.2016.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Hussein BHM, Khairy GM, Kamel RM. Fluorescence sensing of phosdrin pesticide by the luminescent Eu(III)- and Tb(III)-bis(coumarin-3-carboxylic acid) probes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 158:34-42. [PMID: 26802539 DOI: 10.1016/j.saa.2016.01.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 12/29/2015] [Accepted: 01/06/2016] [Indexed: 06/05/2023]
Abstract
Luminescence quenching of the Eu(III)- and Tb(III)-bis (coumarin-3-carboxylic acid) (Ln(III)-(CCA)2) probes has been studied in the presence of organophosphorus or organochlorine pesticides; Phosdrin (P1), Malathion (P2), Profenofos (P3), Formothion (P4), Heptachlor (P5), and Endosulfan (P6). The luminescence intensity of lanthanide complex probes Ln(III)-(CCA)2 decreases as the concentration of the Phosdrin pesticide increases, while the other investigated pesticides have no significant influence on the lanthanide fluorescent intensities. It is observed that the quenching of Eu(III) and Tb(III)-coumarin-3-carboxylic acid by Phosdrin proceeds via static quenching processes according to Stern-Volmer plot. The binding constants (K) and the thermodynamic parameters of the interaction of Ln(III)-(CCA)2 with Phosdrin have been determined. A direct method for the determination of the Phosdrin in ethanol has been developed based on the luminescence changes of the Ln(III)-(CCA)2-phosdrin ternary complexes. The detection limits of P1 were 6.28 and 1.07 μM in case of Eu(III) and Tb(III)-complex, respectively. The influence of various interfering species on the detection of P1 has been investigated to assess the analytical applicability of the method. The new method was applied to determine the Phosdrin pesticide in different types of water samples.
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Affiliation(s)
- Belal H M Hussein
- Chemistry Department, Faculty of Science& Arts, Al Ula, Taibah University, Al Madina Al, Monawarah, Saudi Arabia; Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Gasser M Khairy
- Chemistry Department, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Rasha M Kamel
- Chemistry Department, Faculty of Science, Suez University, Suez, Egypt
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Wang X, Hou T, Dong S, Liu X, Li F. Fluorescence biosensing strategy based on mercury ion-mediated DNA conformational switch and nicking enzyme-assisted cycling amplification for highly sensitive detection of carbamate pesticide. Biosens Bioelectron 2016; 77:644-9. [DOI: 10.1016/j.bios.2015.10.034] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 09/29/2015] [Accepted: 10/11/2015] [Indexed: 11/16/2022]
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15
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Azab HA, Khairy GM, Kamel RM. Time-resolved fluorescence sensing of pesticides chlorpyrifos, crotoxyphos and endosulfan by the luminescent Eu(III)-8-allyl-3-carboxycoumarin probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 148:114-124. [PMID: 25875033 DOI: 10.1016/j.saa.2015.03.098] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 03/21/2015] [Accepted: 03/25/2015] [Indexed: 06/04/2023]
Abstract
This work describes the application of time resolved fluorescence in microtiter plates for investigating the interactions of europium-allyl-3-carboxycoumarin with pesticides chlorpyrifos, endosulfan and crotoxyphos. Stern-Volmer studies at different temperatures for chlorpyrifos and crotoxyphos shows dynamic and static quenching mechanisms respectively. Direct methods for the determination of the pesticides under investigation have been developed using the luminescence variations of the probe in solution. The detection limits are 6.53, 0.004, 3.72 μmol/L for chlorpyrifos, endosulfan, and crotoxyphos, respectively. The binding constants and thermodynamic parameters of the pesticides with probe were evaluated. A thermodynamic analysis showed that the reaction is spontaneous with negative ΔG. Effect of some relevant interferents on the detection of pesticides has been investigated. The new method was applied to the determination of the pesticides in different types of water samples (tap, mineral, and waste water).
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Affiliation(s)
- Hassan A Azab
- Chemistry Department, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt.
| | - Gasser M Khairy
- Chemistry Department, Faculty of Science, Suez Canal University, 41522 Ismailia, Egypt; Chemistry Department, Faculty of Science and Arts, Aljouf University, P.O. Box #2014, Skaka 41421, Saudi Arabia
| | - Rasha M Kamel
- Chemistry Department, Faculty of Science, Suez University, Suez, Egypt
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Li L, Zhang Q, Ding Y, Lu Y, Cai X, Yu L. A Simple Fluorescence Quenching Method for the Determination of Vanillin Using TGA-capped CdTe/ZnS Nanoparticles as Probes. J Fluoresc 2015; 25:897-905. [DOI: 10.1007/s10895-015-1570-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2015] [Accepted: 04/10/2015] [Indexed: 10/23/2022]
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17
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Maji S, Kumar S, Sankaran K. Fluorescence and co-fluorescence of Tb(3+) and Eu(3+) in acetonitrile using 2,6-pyridine dicarboxylic acid as ligand. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2015; 135:405-409. [PMID: 25105262 DOI: 10.1016/j.saa.2014.07.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2014] [Revised: 07/04/2014] [Accepted: 07/15/2014] [Indexed: 06/03/2023]
Abstract
Fluorescence from Tb(3+) and Eu(3+) complexed with 2,6-pyridine dicarboxylic acid (PDA) has been studied using acetonitrile (MeCN) as solvent. The enhancement in fluorescence intensity because of non-aqueous environment provided by the MeCN is less significant, where as fluorescence enhancement of more than two orders of magnitude has been observed with the addition of La(3+); a process known as co-fluorescence in MeCN. The present study demonstrates for the first time co-fluorescence of Tb(3+) and Eu(3+) with excitation through the absorption of PDA. Intermolecular energy transfer is believed to be responsible for co-fluorescence enhancement and it becomes possible as the quenching due to water at the secondary coordination spheres of Tb(3+) and Eu(3+) is reduced when MeCN is used as solvent.
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Affiliation(s)
- S Maji
- Material Chemistry Division, Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India.
| | - Satendra Kumar
- Material Chemistry Division, Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
| | - K Sankaran
- Material Chemistry Division, Chemistry Group, Indira Gandhi Centre for Atomic Research, Kalpakkam 603 102, India
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18
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LIN M, WANG X, TANG Q, LING Q. Luminescence properties of polymers containing europium complexes with 4-tert-butylbenzoic acid. J RARE EARTH 2013. [DOI: 10.1016/s1002-0721(13)60011-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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