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Wu H, Wang Y, Jiang D, Chen X, Tan J, Xu Z, Lei H, Li X. Simple synthesis of flower-like ZnO@Pt composites for dual-mode colorimetric detecting Hg 2+ with smartphone and UV-vis. Anal Chim Acta 2024; 1311:342732. [PMID: 38816157 DOI: 10.1016/j.aca.2024.342732] [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: 01/20/2024] [Accepted: 05/15/2024] [Indexed: 06/01/2024]
Abstract
BACKGROUND Mercury is one of the most toxic heavy metal contaminants that can be harmful to human health through the food chain. Recently, the colorimetric detection of heavy metals based on nanozyme catalytic activity has received extensive interest due to the simplicity, signal visibility and suitability for in situ detection. However, the majority of these nanozymes that can be utilized for detecting mercury with high synthesis temperature and complicated synthesis methods, which limited their practical application. RESULTS In this work, flower-like ZnO@Pt composites were simply synthesized at room temperature, the flower-like structure and the high electron mobility of ZnO endow ZnO@Pt with stronger peroxidase-like activity. Consequently, dual-mode (UV-vis and smartphone) colorimetric sensors were designed to detect Hg2+. In UV-vis mode, the Hg2+ concentration linear range was 10-400 nM, and the limit of detection (LOD) was 0.54 nM. In smartphone mode, the Hg2+ concentration linear range was 50-1250 nM, and the LOD was 29.8 nM. A parallel analysis in 3 real water samples was confirmed by ICP-MS, the results showed good correlations (R2 > 0.98), indicating the practical reliability of these sensors. SIGNIFICANCE The novel flower-like ZnO@Pt composites with high stability, catalytic activity and Hg2+ response were simply synthesized at room temperature, simplifying the synthesis steps and reducing costs. The sensitivity of the developed colorimetric sensor in UV-vis mode was 3-145 times higher than that of the similar methods. The colorimetric sensor in smartphone mode broadened the detection range and improved the portability of Hg2+ detection. Thus, the dual-mode (UV-vis and smartphone) colorimetric sensors providing new detection modes for rapid monitoring of Hg2+ in environmental water.
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Affiliation(s)
- Han Wu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Yu Wang
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Duan Jiang
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xiaomin Chen
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Jingping Tan
- Guangzhou Institute for Food Inspection, Guangzhou, 511410, China
| | - Zhenlin Xu
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Hongtao Lei
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China
| | - Xiangmei Li
- Guangdong Provincial Key Laboratory of Food Quality and Safety, College of Food Science, South China Agricultural University, Guangzhou, 510642, China.
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Mondal B, Banerjee S, Ray J, Jana S, Senapati S, Tripathy T. “Novel Dextrin‐Cysteine Schiff Base: A Highly Efficient Sensor for Mercury Ions in Aqueous Environment”. ChemistrySelect 2020. [DOI: 10.1002/slct.201904351] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Barun Mondal
- Postgraduate Division of Chemistry Midnapore College (Autonomous), Midnapore, Paschim Medinipur 721101 West Bengal India
| | - Shankha Banerjee
- Department of Biotechnology BJM School of Bioscience, Indian Institute of Technology Madras Chennai 600036 India
| | - Jagabandhu Ray
- Postgraduate Division of Chemistry Midnapore College (Autonomous), Midnapore, Paschim Medinipur 721101 West Bengal India
| | - Subinoy Jana
- Postgraduate Division of Chemistry Midnapore College (Autonomous), Midnapore, Paschim Medinipur 721101 West Bengal India
| | - Sanjib Senapati
- Department of Biotechnology BJM School of Bioscience, Indian Institute of Technology Madras Chennai 600036 India
| | - Tridib Tripathy
- Postgraduate Division of Chemistry Midnapore College (Autonomous), Midnapore, Paschim Medinipur 721101 West Bengal India
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Guan P, Guo PR, Liu N, Zhang F, Lei YQ. The preparation of a flexible AuNP modified carbon cloth electrode and its application in electrochemical detection of Hg(ii) by continuous flow in environmental water. Analyst 2018; 143:4436-4441. [PMID: 30151540 DOI: 10.1039/c8an01284a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this article, a carbon cloth composite electrode modified with gold nanoparticles (AuNPs) was prepared by a facile in situ electrodeposition method and applied to the detection of mercury ions in water. With the optimized electrochemical detection conditions and methods, the limit of detection (LOD) was 0.6 μg L-1 with the linearity ranging from 2 to 200 μg L-1 by the SWSV detection method, and the electrode showed good repeatability after many cycles. Based on this detection method, a continuous flow electrochemical detection system was constructed and applied to the detection of Hg ions in environmental water samples. The standard addition experimental results of two real water samples with an addition level of 10 and 50 μg L-1 showed that the recoveries were between 92.4% and 108.9% with RSDs from 2.01% to 3.22%. These results showed the same performance as that of the ZAAS mercury detection method (recovery: 94-102.4%, RSD 2.09-5.4%). Compared with other electrode materials, a shorter detection time, a wider linear range and high stability with a similar LOD can be achieved by a continuous flow detection method by using the composite electrode. The established continuous flow electrochemical detection system would have promising application in online and real-time detection of heavy metals in environmental water.
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Affiliation(s)
- Peng Guan
- Guangdong Provincial Key laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou, 510070, China. and College of Petrochemical Technology, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Peng-Ran Guo
- Guangdong Provincial Key laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou, 510070, China.
| | - Ning Liu
- Guangdong Provincial Key laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou, 510070, China.
| | - Fang Zhang
- Guangdong Provincial Key laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou, 510070, China.
| | - Yong-Qian Lei
- Guangdong Provincial Key laboratory of Emergency Test for Dangerous Chemicals, Guangdong Engineering Technology Research Center of On-line Monitoring of Water Environmental Pollution, Guangdong Institute of Analysis, Guangzhou, 510070, China.
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Recent Studies on the Speciation and Determination of Mercury in Different Environmental Matrices Using Various Analytical Techniques. Int J Anal Chem 2017; 2017:3624015. [PMID: 29348750 PMCID: PMC5733771 DOI: 10.1155/2017/3624015] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Accepted: 10/26/2017] [Indexed: 11/25/2022] Open
Abstract
This paper reviews the current research on the speciation and determination of mercury by various analytical techniques, including the atomic absorption spectrometry (AAS), voltammetry, inductively coupled plasma optical emission spectrometry (ICP-OES), ICP-mass spectrometry (MS), atomic fluorescence spectrometry (AFS), spectrophotometry, spectrofluorometry, and high performance liquid chromatography (HPLC). Approximately 96 research papers on the speciation and determination of mercury by various analytical instruments published in international journals since 2015 were reviewed. All analytical parameters, including the limits of detection, linearity range, quality assurance and control, applicability, and interfering ions, evaluated in the reviewed articles were tabulated. In this review, we found a lack of information in speciation studies of mercury in recent years. Another important conclusion from this review was that there were few studies regarding the concentration of mercury in the atmosphere.
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Kamgaing T, Doungmo G, Melataguia Tchieno FM, Gouoko Kouonang JJ, Mbadcam KJ. Kinetic and isotherm studies of bisphenol A adsorption onto orange albedo(Citrus sinensis): Sorption mechanisms based on the main albedo components vitamin C, flavones glycosides and carotenoids. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART A, TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING 2017; 52:757-769. [PMID: 28394738 DOI: 10.1080/10934529.2017.1303315] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Orange albedo and its adsorption capacity towards bisphenol A (BPA) were studied. Adsorption experiments were conducted in batch mode at 25-55°C. Scanning electron microscopy (SEM), Energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Fourier transform infrared (FTIR) spectroscopy were used to characterise the biosorbent. The effects of various parameters including adsorption time, equilibrium pH, adsorbent dosage and initial adsorbate concentration were investigated. The optimum contact time and pH for the removal of BPA were 60 min and 2, respectively. It was found that the adsorption isotherms best matched the Freundlich model, the adsorption of BPA being multilayer and that of the albedo surface heterogeneous. From the kinetic studies, it was found that the removal of BPA best matched the pseudo-second order kinetic model. An adsorption mechanism based on the albedo surface molecules is proposed and gives a good account of π-π interactions and hydrogen bonding. Orange albedo, with a maximum BPA loading capacity of 82.36 mg g-1 (significantly higher than that of most agricultural residues), is a good candidate for BPA adsorption in aqueous media.
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Affiliation(s)
- Theophile Kamgaing
- a Laboratory of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science , University of Dschang , Dschang , Cameroon
- b Laboratory of water and environment Chemistry / Environmental Analysis and Processes EA2239 , National Higher School of Chemistry , Rennes , France
| | - Giscard Doungmo
- a Laboratory of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science , University of Dschang , Dschang , Cameroon
| | - Francis Merlin Melataguia Tchieno
- a Laboratory of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science , University of Dschang , Dschang , Cameroon
| | - Jimmy Julio Gouoko Kouonang
- a Laboratory of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science , University of Dschang , Dschang , Cameroon
| | - Ketcha Joseph Mbadcam
- c Departement of Inorganic Chemistry, Faculty of Science , University of Yaoundé I , Yaoundé , Cameroon
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Utilization of AuNPs dotted S-doped carbon nanoflakes as electrochemical sensing platform for simultaneous determination of Cu (II) and Hg (II). J Electroanal Chem (Lausanne) 2017. [DOI: 10.1016/j.jelechem.2017.04.002] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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