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Patel MR, Upadhyay MD, Ghosh S, Basu H, Singhal RK, Park TJ, Kailasa SK. Synthesis of multicolor silver nanostructures for colorimetric sensing of metal ions (Cr 3+, Hg 2+ and K +) in industrial water and urine samples with different spectral characteristics. ENVIRONMENTAL RESEARCH 2023:116318. [PMID: 37302744 DOI: 10.1016/j.envres.2023.116318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 05/26/2023] [Accepted: 06/01/2023] [Indexed: 06/13/2023]
Abstract
In this work, we have synthesized four different color (yellow, orange, green, and blue (multicolor)) silver nanostructures (AgNSs) by chemical reduction method where silver nitrate, sodium borohydride and hydrogen peroxide were used as reagents. The as-synthesized multicolor AgNSs were successfully functionalized with bovine serum albumin (BSA) and applied as a colorimetric sensor for the assaying of metal cations (Cr3+, Hg2+, and K+). The addition of metal ions (Cr3+, Hg2+, and K+) into BSA functionalized AgNSs (BSA-AgNSs) causes the aggregation of BSA-AgNSs, and are accompanied by visual color changes with red or blue shift in the surface plasmon resonance (SPR) band of BSA-AgNSs. The BSA-AgNSs show different SPR characteristic for each metal ions (Cr3+, Hg2+, and K+) with exhibiting different spectral shift and color change. The yellow color BSA-AgNSs (Y-BSA-AgNSs) act as a probe for sensing Cr3+, orange color BSA-AgNSs (O-BSA-AgNSs) act as probe for Hg2+ ion assay, green color BSA-AgNSs (G-BSA-AgNSs) act as a probe for the assaying of both K+ and Hg2+, and blue color BSA-AgNSs (B-BSA-AgNSs) act as a sensor for colorimetric detection of K+ ion. The detection limits were found to be 0.26 μM for Cr3+ (Y-BSA-AgNSs), 0.14 μM for Hg2+ (O-BSA-AgNSs), 0.05 μM for K+ (G-BSA-AgNSs), 0.17 μM for Hg2+ (G-BSA-AgNSs), and 0.08 μM for K+ (B-BSA-AgNSs), respectively. Furthermore, multicolor BSA-AgNSs were also applied for assaying of Cr3+, and Hg2+ in industrial water samples and K+ in urine sample.
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Affiliation(s)
- Mayurkumar Revabhai Patel
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, Gujarat, India
| | | | - Subhadeep Ghosh
- Department of Chemistry, Research Institute of Chem-Bio Diagnostic Technology, Chung-Ang University, 84 Heukseok-ro, Dongjak-gu, Seoul, 06974, Republic of Korea
| | - Hirakendu Basu
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, 400085, India
| | - Rakesh Kumar Singhal
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, 400085, India
| | - Tae Jung Park
- Analytical Chemistry Division, Bhabha Atomic Research Center, Trombay, Mumbai, 400085, India.
| | - Suresh Kumar Kailasa
- Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat, 395007, Gujarat, India.
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Xu X, Guo J, Lei Z. Ultrafast colorimetric detection of Cr(VI) using Fe 3O 4@polydopamine/Prussian blue composites as a highly efficient peroxidase mimic. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2023; 15:221-227. [PMID: 36541424 DOI: 10.1039/d2ay01849g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
A recyclable peroxidase mimic Fe3O4@polydopamine/Prussian blue (Fe3O4@PDA/PB) composite was facilely prepared by coating PDA on an Fe3O4 nanoparticle core and in situ growth of PB nanoparticles on a PDA shell. The prepared Fe3O4@PDA/PB composite exhibited excellent peroxidase-like activity and can catalytically oxidize the colorless colorimetric substrate 3,3',5,5'-tetramethylbenzidine (TMB) into a blue colored product in the presence of H2O2 at 30 °C in 1 min. The catalytic mechanism was deduced to be the nanozyme-promoted generation of a hydroxyl radical (·OH), and the catalytic behavior followed the typical Michaelis-Menten kinetics. Based on Cr(VI)-boosted peroxidase-like activity of Fe3O4@PDA/PB, a simple and fast colorimetric method for detection of Cr(VI) was developed. Under the optimum conditions, the colorimetric method exhibited wider linear range (100 nM to 140 μM), low LOD (51.1 nM), good selectivity and short detection time (1 min). Moreover, the feasibility of the proposed colorimetric method was evaluated by determination of Cr(VI) in spiked tap water and lake water samples. Good recoveries (95.2-102.9%) and low relative standard deviations (RSDs) (1.6-4.4%) were obtained, showing great promise for practical use.
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Affiliation(s)
- Xianyuan Xu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China.
| | - Jingfang Guo
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China.
| | - Zhen Lei
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan, 430205, PR China.
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Lima PH, M.L. Sousa É, Lima DL, Pinheiro JF, Sousa ER, Freitas AS, Silva GS. Factorial design optimization of dispersive liquid–liquid microextraction for analysis of metals in natural and drinking waters. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Batueva TD, Gorbunova MN. Nitrogen-containing multifunctional copolymers as reagents to sorb rare-earth metals. SEP SCI TECHNOL 2022. [DOI: 10.1080/01496395.2022.2099420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Tatiana D. Batueva
- Laboratory of Organic Complexing Reagents, Institute of Technical Chemistry of the Ural Branch of the Russian Academy of Sciences - A Branch of the Perm Federal Research Centre, Perm, Russian Federation
| | - Marina N. Gorbunova
- Laboratory of Organic Complexing Reagents, Institute of Technical Chemistry of the Ural Branch of the Russian Academy of Sciences - A Branch of the Perm Federal Research Centre, Perm, Russian Federation
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Bojdi MK, Behbahani M, Feyzabadi ZB. Material Design of a Chromium Imprinted Polymer and its Application as a Highly Selective Electrochemical Sensor for Determining Chromium Ion at Trace Levels. ChemistrySelect 2021. [DOI: 10.1002/slct.202102866] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Majid Kalate Bojdi
- Department of Chemistry Faculty of Science University of Birjand Birjand South Khorasan Iran
| | - Mohammad Behbahani
- Department of Chemistry Faculty of Science Shahid Chamran University of Ahvaz Ahvaz Iran
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Li Y, Wang Z, Liu C, Zhang D, Liao L, Xiao X. Graphene oxide modified H
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L‐ion imprinting electrochemical sensor for the detection of uranyl ions. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yujie Li
- College of Resource & Environment and Safety Engineering University of South China Hengyang City 421001 P.R. China
| | - Zhimei Wang
- College of Resource & Environment and Safety Engineering University of South China Hengyang City 421001 P.R. China
| | - Chen Liu
- College of Chemistry and Chemical Engineering Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards University of South China Hengyang City 421001 P.R. China
| | - Di Zhang
- College of Chemistry and Chemical Engineering Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards University of South China Hengyang City 421001 P.R. China
| | - Lifu Liao
- College of Chemistry and Chemical Engineering Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards University of South China Hengyang City 421001 P.R. China
| | - Xilin Xiao
- College of Resource & Environment and Safety Engineering University of South China Hengyang City 421001 P.R. China
- College of Chemistry and Chemical Engineering Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards University of South China Hengyang City 421001 P.R. China
- State Key Laboratory of Chemo & Biosensing and Chemometrics Hunan University Changsha City 410082 Hunan Province P.R. China
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Wu C, Ning X, Chen X, Ma J, Zhao Q, Zhao L, Zhu G, Shi S. Multi-functional porous organic polymers for highly-efficient solid-phase extraction of β-agonists and β-blockers in milk. RSC Adv 2021; 11:28925-28933. [PMID: 35478535 PMCID: PMC9038154 DOI: 10.1039/d1ra04481h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/21/2021] [Indexed: 12/29/2022] Open
Abstract
A simple, accurate, and highly sensitive analytical method was developed in this study for the determination of ten β-agonists and five β-blockers in milk. In this method, new adsorbent phosphonic acid-functionalized porous organic polymers were synthesized through a direct knitting method. The synthesis procedure of the materials and the extraction conditions (such as the composition of loading buffer and eluent) were optimized. Benefitting from the high surface area (545–804 m2 g−1), multiple functional framework and good porosity, the phosphonic acid-functionalized porous organic polymers showed a high adsorption rate and high adsorption capacity for β-agonists (224 mg g−1 and 171 mg g−1 for clenbuterol and ractopamine, respectively). The analytes were quantified by ultra-high-performance liquid chromatography coupled to high-resolution tandem mass spectrometry. It showed a good linearity (with R2 ranging from 0.9950 to 0.9991 in the linear range of 3–5 orders of magnitude), with low limits of quantification ranging from 0.05 to 0.25 ng g−1. The limits of detection of the method for the analytes were measured to be in the range of 0.02 to 0.1 ng g−1. The recoveries of target analytes from real samples on the material were in the range of 62.4–119.4% with relative standard deviations of 0.6–12.1% (n = 4). Moreover, good reproducibility of the method was obtained with the interday RSD being lower than 11.7% (n = 5) and intraday RSD lower than 12.2% (n = 4). The proposed method was accurate, reliable and convenient for the simultaneous analysis of multiple β-agonists and β-blockers. Finally, the method was successfully applied for the analysis of such compounds in milk samples. Novel phosphonic acid-functionalized porous organic polymers were synthesized through direct knitting method. It shows high adsorption efficiency and high adsorption capacity for multiple β-agonists and β-blockers analysis.![]()
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Affiliation(s)
- Ci Wu
- Liaoning Academy of Inspection and Quarantine Dalian 116000 China .,Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Technology Centre of Dalian Customs District Washington DC 20057 USA
| | - Xingshuang Ning
- Technology Centre of Dalian Customs District Dalian 116600 China
| | - Xi Chen
- Technology Centre of Dalian Customs District Dalian 116600 China
| | - Junfeng Ma
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Technology Centre of Dalian Customs District Washington DC 20057 USA
| | - Qun Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Li Zhao
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Guozhi Zhu
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
| | - Song Shi
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences Dalian 116023 China
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Comparison of two polythiophene nanocomposites-based dispersive micro solid-phase extraction procedures coupled with salt-induced/magnetic separations for efficient preconcentration of toxic metal ions from food samples. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2020.114997] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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Ghayyem S, Swaidan A, Barras A, Dolci M, Faridbod F, Szunerits S, Boukherroub R. Colorimetric detection of chromium (VI) ion using poly(N-phenylglycine) nanoparticles acting as a peroxidase mimetic catalyst. Talanta 2021; 226:122082. [PMID: 33676645 DOI: 10.1016/j.talanta.2021.122082] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/30/2020] [Accepted: 12/30/2020] [Indexed: 02/07/2023]
Abstract
This paper reports on enzyme-like catalytic properties of polyethylene glycol-functionalized poly(N-phenylglycine) (PNPG-PEG) nanoparticles, which have not been explored to date. The developed nanoparticles have the ability to display great inherent peroxidase-like activity at very low concentrations, and are able to catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) substrate in presence of hydrogen peroxide (H2O2). The oxidized product of TMB has a deep blue color with a maximum absorbance at ~655 nm. The PNPG-PEG nanoparticles exhibit Km values of 0.2828 for TMB and 0.0799 for H2O2, indicating that TMB oxidation takes place at lower concentration of H2O2 in comparison to other nanozymes. Based on the known mechanism of H2O2 oxidation by hexavalent chromium [Cr(VI)] ions to generate hydroxyl radicals (•OH), these nanoparticles were successfully applied for the colorimetric sensing of Cr(VI) ions. The sensor achieved good performance for Cr(VI) sensing with detection limits of 0.012 μM (0.01-0.1 μM linear range) and 0.52 μM (0.05-12.5 μM linear range). The detection scheme was highly selective, and successfully applied for the detection of Cr(VI) in real water samples.
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Affiliation(s)
- Sena Ghayyem
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France; Analytical Chemistry Department, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Abir Swaidan
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France
| | - Alexandre Barras
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France
| | - Mathias Dolci
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France
| | - Farnoush Faridbod
- Analytical Chemistry Department, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Sabine Szunerits
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, Univ. Polytechnique Hauts-de-France, UMR 8520, IEMN, Lille, F-59000, France.
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Chen X, Ma C, Kang Q, Chen Y, Shen D. Field analysis of Cr(vi) in water samples by using a smartphone-based ultralong absorption path reflection colorimetric device. NEW J CHEM 2021. [DOI: 10.1039/d0nj05948j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Hexavalent chromium is highly toxic and regarded as one of the main pollutants in the environment. A multiple reflection colorimetric cell is designed to improve the sensitivity in field analysis for Cr(vi).
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Affiliation(s)
- Xiaolan Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Cheng Ma
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Qi Kang
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Yuqin Chen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
| | - Dazhong Shen
- College of Chemistry
- Chemical Engineering and Materials Science
- Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong
- Shandong Normal University
- Jinan 250014
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Zhang X, Jia W, Li D, Liu C, Wang R, Li K, Li H, Chen Z, Sun Y, Ruso JM, Hu D, Liu Z. Study on synthesis and adsorption properties of ReO4− ion imprinted polymer. JOURNAL OF POLYMER RESEARCH 2020. [DOI: 10.1007/s10965-020-02172-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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12
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Kholmogorova AS, Chernysh ML, Neudachina LK, Puzyrev IS. Method of adsorption-atomic-absorption determination of silver (I) using a modified polysiloxane. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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13
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Mukherjee S, Betal S, Chattopadhyay AP. Dual sensing and synchronous fluorescence spectroscopic monitoring of Cr 3+and Al 3+ using a luminescent Schiff base: Extraction and DFT studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 228:117837. [PMID: 31784221 DOI: 10.1016/j.saa.2019.117837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 10/27/2019] [Accepted: 11/19/2019] [Indexed: 06/10/2023]
Abstract
A well designed, new pyrene based small molecule (L) was synthesized from 1:1 condensation reaction of 1-aminopyrene and 6-(1,3-benzodioxal-5-yl)-2-pyridine carboxaldehyde which was characterized by absorption, emission spectrometry, FTIR, NMR and mass studies. Interestingly the UV-vis and fluorescence spectroscopic studies revealed that the ligand (L) works as a dual turn-on luminescent chemosensor for chromium(III) (Cr3+) and aluminium(III) (Al3+) in aqueous environment which were further supported by DFT and TDDFT studies. L shows a significant colour change from pale yellow to reddish yellow with a detection limit of ~10-9 M in the presence of Cr3+ and Al3+ whereas there were no noteworthy changes in the presence of other monovalent and divalent metal ions. The molecular signaling in the presence of Cr3+, Al3+, Fe3+ and EDTA was compared with advanced level combinational INHIBIT gate based on 4 input logic gates. Herein, first derivative constant wavelength synchronous fluorescence spectroscopy (1st DCWSFS) was applied for the determination of Cr3+, Al3+ ion concentrations in a mixture via increment of spectral resolution of the respective overlapping peaks. 1st DCWSFS is reported to be used in pharmaceuticals but very few works have been done for determination of metal ion concentration in environmental sample without prior separation. The individual Cr3+and Al3+ ion concentrations in a mixture were determined through liquid-liquid extraction process and the efficiencies were compared with 1st derivative SFS method. It was observed that 1st derivative SFS process is more efficient than conventional liquid-liquid extraction process. Therefore, 1st DCWSFS method using sensor L might be useful as a diagnostic tool for detection of individual metal ion concentrations (Cr3+ and Al3+) from a mixture which will be cost-effective, time saving and more precise.
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Affiliation(s)
- Soma Mukherjee
- Department of Environmental Science, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India.
| | - Soumi Betal
- Department of Environmental Science, University of Kalyani, Kalyani, Nadia - 741235, West Bengal, India
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Leite VDSA, Constantino VRL, Izumi CMS, Tronto J, Pinto FG. A dispersive solid phase extraction-based method for chromium(vi) analysis using a Zn–Al layered double hydroxide intercalated with l-aspartic acid as a dissolvable adsorbent. NEW J CHEM 2020. [DOI: 10.1039/c9nj05771d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An analytical method for extraction and preconcentration of Cr(vi) in water with DSPE using a Zn–Al LDH intercalated with l-aspartic acid as a dissolvable adsorbent.
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Affiliation(s)
- Victor dos Santos Azevedo Leite
- Universidade Federal de Viçosa
- Instituto de Ciências Exatas e Tecnológicas
- Campus de Rio Paranaíba
- Rodovia BR 354 km 310
- Rio Paranaíba-MG
| | | | - Celly Mieko Shinohara Izumi
- Universidade Federal de Juiz de Fora
- Departamento de Química
- Rua José Lourenço Kelmer, s/n
- Juiz de Fora-MG
- Brazil
| | - Jairo Tronto
- Universidade Federal de Viçosa
- Instituto de Ciências Exatas e Tecnológicas
- Campus de Rio Paranaíba
- Rodovia BR 354 km 310
- Rio Paranaíba-MG
| | - Frederico Garcia Pinto
- Universidade Federal de Viçosa
- Instituto de Ciências Exatas e Tecnológicas
- Campus de Rio Paranaíba
- Rodovia BR 354 km 310
- Rio Paranaíba-MG
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A water-stable luminescent Co(II) coordination polymer as probe for efficient detection of Cr(VI)-anions (Cr2O72– and CrO42–) in aqueous solution. INORG CHEM COMMUN 2020. [DOI: 10.1016/j.inoche.2019.107665] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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An environment-friendly supramolecular solvent-based liquid–phase microextraction method for determination of aluminum in water and acid digested food samples prior to spectrophotometry. Microchem J 2019. [DOI: 10.1016/j.microc.2019.104100] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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17
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Feng W, Dong T, Li K, Wang T, Chen Z, Wang R. Characterization of binding behaviors of Cd2+ to rice proteins. Food Chem 2019; 275:186-192. [DOI: 10.1016/j.foodchem.2018.09.123] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/19/2018] [Accepted: 09/19/2018] [Indexed: 02/07/2023]
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Graphene oxide chemically modified with 5-amino-1,10-phenanthroline as sorbent for separation and preconcentration of trace amount of lead(II). Mikrochim Acta 2019; 186:91. [PMID: 30631926 DOI: 10.1007/s00604-018-3213-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Accepted: 12/27/2018] [Indexed: 10/27/2022]
Abstract
Graphene oxide (GO) was chemically functionalized with 5-amino-1,10-phenanthroline. The resulting conjugate (phen-GO) was characterized by scanning electron microscopy and X-ray photoelectron spectroscopy. The experiments show that phen-GO has a high affinity for extraction of Pb(II) ions. Isotherms and kinetics fit the Langmuir model and pseudo-second-order equations. By using phen-GO as a sorbent, Pb(II) ions can be quantitatively adsorbed at pH 6.0. The adsorption capacity is 548 mg g-1. Following desorption with 2 mol L-1 HNO3, Pb(II) was quantified by inductively coupled plasma optical emission spectrometry. The effects of pH value, eluent type, sorption time, sample volume, and matrix ions were optimized. The accuracy of the method was validated by analysis of the reference materials DOLT-3 (dogfish liver) and SRM 1640a (natural water). Under optimal conditions, the calibration plots cover the 0.25 to 500 ng mL-1 Pb(II) concentration range. The method was successfully applied to the analysis of spiked water and biological samples. Other figures of merit include a preconcentration factor of 250, a detection limit of 46 ng L-1, and a relative standard deviation of <5%. Graphical abstract Schematic presentation of the dispersive solid-phase extraction of lead(II) ions using graphene oxide modified with 5-amino-1,10-phenanthroline, followed by their determination by inductively coupled plasma optical emission spectrometry (ICP OES).
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