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Shi X, Kralj M, Zhang Y. Colorimetric paper test strips based on cesium lead bromide perovskite nanocrystals for rapid detection of ciprofloxacin hydrochloride. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2022; 34:304002. [PMID: 35533658 DOI: 10.1088/1361-648x/ac6e1d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Accepted: 05/09/2022] [Indexed: 06/14/2023]
Abstract
The detection of drugs containing hydrochloric salt with conventional methods is time consuming and expensive. In this work, upon exposure to ciprofloxacin hydrochloride at different concentrations, the emission from CsPbBr3NCs shifts to the blue from 513 nm to 442 nm. CsPbBr(3-x)ClxNCs are formed by the ion exchange and substitution of Br-and Cl-ions from surface to core of NCs. The first-principles calculations suggest that the substitution of Br-by Cl-ions plays a critical role in the tuning of the energy bandgap. The color of paper test strips changes immediately after exposure to different Ciproxan solutions. We propose that this rapid and portable method has a high potential application in other chloride salts for food safety.
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Affiliation(s)
- Xiaoqing Shi
- International Joint Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China
| | - Marko Kralj
- Center of Excellence for Advanced Materials and Sensing Devices, Institute of Physics, Zagreb 10000, Croatia
| | - Yang Zhang
- International Joint Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng, 475004, People's Republic of China
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Hernández P, Aguilar‐Lira GY, Islas G, Rodriguez JA. Development of a New Voltammetric Methodology for the Determination of Ciprofloxacin in Beef Samples Using a Carbon Paste Electrode Modified with Nafion and Fullerenes. ELECTROANAL 2021. [DOI: 10.1002/elan.202060525] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Hernández
- Universidad Politécnica de Francisco I. Madero Área de Energía, Domicilio Conocido Tepatepec C.P. 42640 Hidalgo México
| | - G. Y. Aguilar‐Lira
- Universidad Autónoma del Estado de Hidalgo Carretera Pachuca-Tulancingo Área Académica de Química, Km 4.5 Col. Carboneras, Mineral de la Reforma C.P. 42184 Hidalgo México
| | - G. Islas
- Universidad Politécnica de Francisco I. Madero Área de Energía, Domicilio Conocido Tepatepec C.P. 42640 Hidalgo México
| | - J. A. Rodriguez
- Universidad Autónoma del Estado de Hidalgo Carretera Pachuca-Tulancingo Área Académica de Química, Km 4.5 Col. Carboneras, Mineral de la Reforma C.P. 42184 Hidalgo México
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Kubáň P, Hauser PC. Contactless conductivity detection for analytical techniques: Developments from 2016 to 2018. Electrophoresis 2018; 40:124-139. [PMID: 30010203 DOI: 10.1002/elps.201800248] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 07/10/2018] [Accepted: 07/10/2018] [Indexed: 01/05/2023]
Abstract
The publications concerning capacitively coupled contactless conductivity detection for the 2-year period from mid-2016 to mid-2018 are covered in this update to the earlier reviews of the series. Relatively few reports on fundamental investigations or new designs have appeared in the literature in this time interval, but the development of new applications with the detection method has continued strongly. Most often, contactless conductivity measurements have been employed for the detection of inorganic or small organic ions in conventional capillary electrophoresis, less often in microchip electrophoresis. A number of other uses, such as detection in chromatography or the gauging of bubbles in streams have also been reported.
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Affiliation(s)
- Pavel Kubáň
- Institute of Analytical Chemistry of the Czech Academy of Sciences, Brno, Czech Republic
| | - Peter C Hauser
- Department of Chemistry, University of Basel, Basel, Switzerland
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Zhang X, Jiang X, Yang Q, Wang X, Zhang Y, Zhao J, Qu K, Zhao C. Online Monitoring of Bacterial Growth with an Electrical Sensor. Anal Chem 2018; 90:6006-6011. [PMID: 29685039 DOI: 10.1021/acs.analchem.8b01214] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Herein, we developed an automatic electrical bacterial growth sensor (EBGS) based on a multichannel capacitively coupled contactless conductivity detector (C4D). With the use of the EBGS, up to eight culture samples of E. coli in disposable tubes were online monitored simultaneously in a noninvasive manner. Growth curves with high resolution (on the order of a time scale of seconds) were generated by plotting normalized apparent conductivity value against incubation time. The characteristic data of E. coli growth (e.g., growth rate) obtained here were more accurate than those obtained with optical density and contact conductivity methods. And the correlation coefficient of the regression line ( r) for quantitative determination of viable bacteria was 0.9977. Moreover, it also could be used for other tasks, such as the investigation of toxic/stress effects from chemicals and antimicrobial susceptibility testing. All of these performances required neither auxiliary devices nor additional chemicals and biomaterials. Taken together, this strategy has the advantages of simplicity, accuracy, reproducibility, affordability, versatility, and miniaturization, liberating the users greatly from financial and labor costs.
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Affiliation(s)
- Xuzhi Zhang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China
| | - Xiaoyu Jiang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China.,College of Marine Sciences , Shanghai Ocean University , Shanghai 201306 , China
| | - Qianqian Yang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China.,College of Marine Sciences , Shanghai Ocean University , Shanghai 201306 , China
| | - Xiaochun Wang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China
| | - Yan Zhang
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China
| | - Jun Zhao
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China
| | - Keming Qu
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences and Laboratory for Marine Fisheries Science and Food Production Processes , Qingdao National Laboratory for Marine Science and Technology , 106 Nanjing Road , Qingdao 266071 , China
| | - Chuan Zhao
- School of Chemistry , Kensington Campus, The University of New South Wales , Sydney , NSW 2052 , Australia
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