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Chen J, Wang X, Guo J, Lv Y, Chen M, Tong H, Liu C. Heavy Metal-Induced Assembly of DNA Network Biosensor from Double-Loop Hairpin Probes for Ultrasensitive Detection of UO 22+ in Water and Soil Samples. Anal Chem 2024. [PMID: 38320403 DOI: 10.1021/acs.analchem.3c05526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
The uranyl ion (UO22+) is the most stable form of uranium, which exhibits high toxicity and bioavailability posing a severe risk to human health. The construction of ultrasensitive, reliable, and robust sensing techniques for UO22+ detection in water and soil samples remains a challenge. Herein, a DNA network biosensor was fabricated for UO22+ detection using DNAzyme as the heavy metal recognition element and double-loop hairpin probes as DNA assembly materials. UO22+-activated specific cleavage of the DNAzyme will liberate the triggered DNA fragment, which can be utilized to launch a double-loop hairpin probe assembly among Hab, Hbc, and Hca. Through multiple cyclic cross-hybridization reactions, hexagonal DNA duplex nanostructures (n[Hab•Hbc•Hca]) were formed. This DNA network sensing system generates a high fluorescence response for UO22+ monitoring. The biosensor is ultrasensitive, with a detection limit of 2 pM. This sensing system also displays an excellent selectivity and robustness, enabling the DNA network biosensor to work even in complex water and soil samples with excellent accuracy and reliability. With the advantages of enzyme-free operation, outstanding specificity, and high sensitivity, our proposed DNA network biosensor provides a reliable, simple, and robust method for trace levels of UO22+ detection in environmental samples.
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Affiliation(s)
- Junhua Chen
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Xu Wang
- Institute of Quality Standard and Monitoring Technology for Agro-Products, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China
| | - Junhui Guo
- School of Material and Food, Jiangmen Polytechnic, Jiangmen 529000, China
| | - Yiwen Lv
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Manjia Chen
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Hui Tong
- National-Regional Joint Engineering Research Center for Soil Pollution Control and Remediation in South China, Guangdong Key Laboratory of Integrated Agro-Environmental Pollution Control and Management, Institute of Eco-Environmental and Soil Sciences, Guangdong Academy of Sciences, Guangzhou 510650, China
| | - Chengshuai Liu
- State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550081, China
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Zhang L, Tan QG, Xiao SJ, Yang GP, Liu X, Zheng QQ, Fan JQ, Liang RP, Qiu JD. DNAzyme-Derived Aptamer Reversely Regulates the Two Types of Enzymatic Activities of Covalent-Organic Frameworks for the Colorimetric Analysis of Uranium. Anal Chem 2023; 95:4703-4711. [PMID: 36856710 DOI: 10.1021/acs.analchem.2c05329] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
Abstract
Nanozymes are nanomaterials with enzyme-mimetic activity. It is known that DNA can interact with various nanozymes in different ways, enhancing or inhibiting the activity of nanozymes, which can be used to develop various biosensors. In this work, we synthesized a photosensitive covalent-organic framework (Tph-BT) as a nanozyme, and its oxidase and peroxidase activities could be reversely regulated by surface modification of single-stranded DNA (ssDNA) for the colorimetric detection of UO22+. Tph-BT exhibits excellent oxidase activity and weak peroxidase activity, and it is surprising to find that the UO22+-specific DNA aptamer can significantly inhibit the oxidase activity while greatly enhancing the peroxidase activity. The present UO22+ interacts with the DNA aptamer to form secondary structures and detaches from the surface of Tph-BT, thereby restoring the enzymatic activity of Tph-BT. Based on the reversed regulation effects of the DNA aptamer on the two types of enzymatic activities of Tph-BT, a novel "off-on" and "on-off" sensing platform can be constructed for the colorimetric analysis of UO22+. This research demonstrates that ssDNA can effectively regulate the different types of enzymatic activities of single COFs and achieve the sensitive and selective colorimetric analysis of radionuclides by the naked eye.
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Affiliation(s)
- Li Zhang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Quan-Gen Tan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Sai-Jin Xiao
- State Key Laboratory of Nuclear Resources and Environment, East China University of Technology (ECUT), Nanchang 330013, China
| | - Gui-Ping Yang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Xin Liu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Qiong-Qing Zheng
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jia-Qi Fan
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Ru-Ping Liang
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Jian-Ding Qiu
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China.,State Key Laboratory of Nuclear Resources and Environment, East China University of Technology (ECUT), Nanchang 330013, China
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3
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Liu J, Wang X, Zhao Y, Xu Y, Pan Y, Feng S, Liu J, Huang X, Wang H. NH 3 Plasma Functionalization of UiO-66-NH 2 for Highly Enhanced Selective Fluorescence Detection of U(VI) in Water. Anal Chem 2022; 94:10091-10100. [PMID: 35737958 DOI: 10.1021/acs.analchem.2c01138] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Radioactive U(VI) in nuclear wastewater is a global environmental pollutant that poses a great threat to human health. Therefore, it is of great significance to develop a U(VI) sensor with desirable sensitivity and selectivity. Inspired by electron-donating group modification for enhancement of binding affinity toward U(VI), we report an amine group functionalization of UiO-66-NH2, using a low-cost, environmentally friendly, and low-temperature NH3 plasma technique as a fluorescence switching nanoprobe for highly sensitive and selective detection of U(VI). The resulting amine-functionalized UiO-66-NH2 (LTP@UiO-66-NH2) shows dramatically enhanced fluorescence emission and selective sensitivity for U(VI) on the basis of the quenching effect. The quenching efficiency increases from 58 to 80% with the same U(VI) concentration (17.63 μM) after NH3 plasma functionalization. As a result, the LTP@UiO-66-NH2 has the best Ksv (1.81 × 105 M-1, 298 K) and among the lowest LODs (0.08 μM, 19.04 ppb) compared with those reported in the literature. Intraday and interday precision and application in real environment experiments indicate stable and accurate U(VI) detection performance. Fluorescence lifetime and temperature-dependent detection experiments reveal that the quenching mechanism belongs to the static quenching interaction. The highly selective fluorescence detection is attributed to the selective binding of U(VI) by the rich functionalized amine groups of LTP@UiO-66-NH2. This work provides an efficient fluorescence probe for highly sensitive U(VI) detection in water, and a new strategy of tailored plasma functionalization for developing a practical MOF sensor platform for enhanced fluorescence emission, sensitivity, and selectivity for detecting trace amounts of radioactive species in the environment.
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Affiliation(s)
- Jiali Liu
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Xianbiao Wang
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Yangyang Zhao
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Yongfei Xu
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Yang Pan
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, PR China
| | - Shaojie Feng
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Jin Liu
- Anhui Province International Research Center on Advanced Building Materials, School of Materials Science and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, PR China
| | - Xianhuai Huang
- Anhui Provincial Key Laboratory of Environmental Pollution Control and Resource Reuse, Anhui Jianzhu University, Hefei 230601, PR China
| | - Huanting Wang
- Department of Chemical Engineering, Monash University, Clayton, Victoria 3800, Australia
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4
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Sun L, Liu J, Li L, Zhen D, Dai Z, Tang S, Zhu B, Chen L, Chen H, Gong M, Tang Z, Hu Y. Advances of biosensors for UO22+ detecting based on specific DNAzyme. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Recent advances in the construction of functional nucleic acids with isothermal amplification for heavy metal ions sensor. Microchem J 2022. [DOI: 10.1016/j.microc.2021.107077] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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6
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Xue Y, Wang Y, Wang S, Yan M, Huang J, Yang X. Label-Free and Regenerable Aptasensor for Real-Time Detection of Cadmium(II) by Dual Polarization Interferometry. Anal Chem 2020; 92:10007-10015. [PMID: 32618180 DOI: 10.1021/acs.analchem.0c01710] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Recently, numerous aptamer-based biosensors have been developed to detect heavy metal ions. Most of aptamer-based biosensors only can be used to get some quantitative information. The mechanism of the interaction between aptamer and metal ions, however, is rarely studied. In this work, a label-free and regenerable aptamer-based biosensor was constructed using dual polarization interferometry (DPI). This aptasensor was used to investigate the real-time interaction process between cadmium(II) and its aptamer. According to the information on mass, thickness, and density obtained by DPI, a Cd2+ concentration-dependent interaction mechanism and conformation of aptamer was proposed. At low Cd2+ concentration, Cd2+ mainly interacted with phosphate groups on aptamer, resulting in the stretched ssDNA and a few vertical hairpin structures. When adding the high concentration of Cd2+, Cd2+ primarily bound with bases of DNA by coordination interaction and the conformation of aptamer transferred to a tight and short hairpin structure. In addition, the association rate constant (ka), dissociation rate constant (kd) and disassociation constant (KD) between Cd2+ and its aptamer were calculated to be 96 M-1 S-1, 2.11 × 10-5 S-1, and 220 nM, respectively. The proposed aptasensor showed high sensitivity for Cd2+ detection with the detection limit of 0.61 μg/L, which was far below the 5.0 μg/L ranked by the U.S. Environmental Protection Agency. The biosensor also exhibited excellent regenerability and could be used for three cycles without obvious change in response signal. Therefore, the developed method could not only provide quantitative information, but also offered the information on conformation and kinetics for molecular interaction. This method can facilely extend to study the interaction of DNA with other ions, small molecules, or biomacromolecules.
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Affiliation(s)
- Yu Xue
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Yu Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Shuang Wang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Mengxia Yan
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Jianshe Huang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China
| | - Xiurong Yang
- State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Changchun, Jilin 130022, China.,University of Science and Technology of China, Hefei, Anhui 230026, China
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7
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Huang YQ, Zhang X, Xue JH, Liu L, Chen SH, Wang YS. Sensitive and selective assay of uranyl based on the aggregation induced fluorescent quenching of protamine capped gold nanoclusters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117649. [PMID: 31629983 DOI: 10.1016/j.saa.2019.117649] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 09/26/2019] [Accepted: 10/09/2019] [Indexed: 06/10/2023]
Abstract
The protamine capped gold nanoclusters (AuNCs@PRT) were synthesized by an one-pot approach, and utilized as a nanoprobe for highly sensitive and selective assay of U(VI) ions. The method is based on the aggregation induced fluorescent quenching of AuNCs@PRT by U(VI) ions. Under optimum conditions, the decrease of fluorescence intensity displayed a good linear correlation with the concentration of U(VI) ions ranging from 20.4 nM to 9.74 μM, with a detection limit of 6.1 nM. The relative standard deviations were 3.86%, 1.41% and 1.71% via 11 detections at concentrations of 40 nM, 0.40 μM and 4.0 μM of U(VI), respectively. The quenching mechanism was demonstrated to be due to the binding of U(VI) towards PRT to cause the aggregation of AuNCs@PRT rather than metal-metal interaction. The results suggest the potential application of this approach for monitoring the level of U(VI) in environmental samples.
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Affiliation(s)
- Yan-Qin Huang
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Xia Zhang
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Jin-Hua Xue
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Ling Liu
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Si-Han Chen
- College of Public Health, University of South China, Hengyang, 421001, PR China
| | - Yong-Sheng Wang
- College of Public Health, University of South China, Hengyang, 421001, PR China.
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8
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A quencher-free DNAzyme beacon for fluorescently sensing uranyl ions via embedding 2-aminopurine. Biosens Bioelectron 2019; 135:166-172. [PMID: 31009884 DOI: 10.1016/j.bios.2019.04.021] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 03/24/2019] [Accepted: 04/10/2019] [Indexed: 01/23/2023]
Abstract
DNAzyme-based fluorescent probes have provided valuable protocols for detecting uranium, one of the most common radioactive contaminants in the environment, with ultra-high selectivity and sensitivity. Designing novel DNAzyme beacons to update the mode of fluorescence reporting and/or quenching will continuously enhance "turn-on" sensing performance as well as promote actual application of the biological probes. In this work, we developed a novel quencher-free DNAzyme beacon by embedding fluorescent 2-aminopurine for rapid detection of uranyl ion. 2-aminopurine is able to substitute adenine and keep strong fluorescence in single-stranded DNA whereas being quenched in the hybridized double-stranded DNA by the base-stacking interaction. The combination of such trait of 2-aminopurine and cleavage reaction of DNAzyme in the presence of target co-factors possesses two main advantages for ion sensing: simplicity for avoidance of extra quencher groups and high performance because of superiority of DNAzyme essence. The experimental conditions including embedding site, pH and salt concentration of buffer solutions, and the amount ratio of enzyme strand to substrate strand used to form DNAzymes were systematically optimized to inspire the highest performance of the biological beacon. Thus, a detection limit of 9.6 nM, a wide linear range from 5 nM to 400 nM (R2 = 0.997), and selectivity of more than 400 000-fold over other metal ions were achieved by the novel DNAzyme probes. The highly sensitive, selective and quencher-free DNAzyme probes accommodated a simple and cost-efficient alternative to current fluorescent counterparts, holding a great potential for further application in practical ion assay.
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9
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He W, Hua D. Spectrographic sensors for uranyl detection in the environment. Talanta 2019; 201:317-329. [PMID: 31122429 DOI: 10.1016/j.talanta.2019.04.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 04/04/2019] [Accepted: 04/07/2019] [Indexed: 02/06/2023]
Abstract
More and more severe energy problem triggers extensive application of nuclear energy, and the adverse effects brought by nuclear materials such as uranyl to the environment are becoming the concern, as it has become a threat to human's health. Therefore, the detection of uranyl is increasingly important, which aims to make the application of uranium under surveillance and protection. A lot of detection methods employing varying materials based on different techniques for uranyl have been proposed including those using expensive and complicated instruments such as ICP-MS, ESI-MS, and neutron activation analysis etc. Those methods based on expensive instruments often provide quite low limit of detection (LOD) and excellent validity and repeatability, however, methods that are low-cost, convenient and rapid are in demand because these are satisfied characters for on-site and in-time determination. In the review, we discuss uranyl sensors based on spectrographic techniques, which is facile and promising for rapid assessment of uranium content in practical application. Spectrographic techniques including fluorescence, UV-vis spectrophotometry, resonance light scattering (RLS) and surface enhanced Raman scattering (SERS) are evaluated. In detail, the core materials that playing extremely important roles in detection performance are stated consisting of small molecule, biomolecule, polymer and nanomaterial.
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Affiliation(s)
- Weiwei He
- State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China; Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China
| | - Daoben Hua
- State Key Laboratory of Radiation Medicine and Protection, School of Radiological and Interdisciplinary Sciences (RAD-X), Soochow University, Suzhou, 215123, China; Collaborative Innovation Center of Radiological Medicine of Jiangsu Higher Education Institutions, Suzhou, 215123, China.
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10
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Zhu YF, Wang YS, Zhou B, Huang YQ, Li XJ, Chen SH, Wang XF, Tang X. Ultrasensitive detection of Ag(I) based on the conformational switching of a multifunctional aptamer probe induced by silver(I). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 189:190-194. [PMID: 28820971 DOI: 10.1016/j.saa.2017.08.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 08/05/2017] [Accepted: 08/09/2017] [Indexed: 06/07/2023]
Abstract
We for the first time confirmed that the low concentrations of Ag(I) could induce a silver specific aptamer probe (SAP) from a random coil sequence form to G-quadruplex structure. Thereby, a novel highly sensitive fluorescence strategy for silver(I) assay was established. The designed multifunctional SAP could act as a recognition element for Ag(I) and a signal reporter. The use of such a SAP can ultrasensitively and selectively detect Ag(I), giving a detection limit down to 0.64nM. This is much lower than those reported by related literatures. This strategy has been applied successfully for the detection of Ag(I) in real samples, further proving its reliability. Taken together, the designed SAP is not only a useful recognition and signal probe for silver, but also gives a platform to study the interaction of monovalent cations with DNA.
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Affiliation(s)
- Yu-Feng Zhu
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Yong-Sheng Wang
- College of Public Health, University of South China, Hengyang 421001, PR China.
| | - Bin Zhou
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Yan-Qin Huang
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Xue-Jiao Li
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Si-Han Chen
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Xiao-Feng Wang
- College of Public Health, University of South China, Hengyang 421001, PR China
| | - Xian Tang
- College of Public Health, University of South China, Hengyang 421001, PR China
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11
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Cheng X, Yu X, Chen L, Zhang H, Wu Y, Fu F. Visual detection of ultra-trace levels of uranyl ions using magnetic bead-based DNAzyme recognition in combination with rolling circle amplification. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2472-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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12
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Ultrasensitive DNAzyme based amperometric determination of uranyl ion using mesoporous silica nanoparticles loaded with Methylene Blue. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2397-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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13
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Zhu YF, Wang YS, Zhou B, Yu JH, Peng LL, Huang YQ, Li XJ, Chen SH, Tang X, Wang XF. A multifunctional fluorescent aptamer probe for highly sensitive and selective detection of cadmium(II). Anal Bioanal Chem 2017; 409:4951-4958. [DOI: 10.1007/s00216-017-0436-1] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 04/13/2017] [Accepted: 05/29/2017] [Indexed: 11/28/2022]
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14
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Jiang J, Ma L, Chen J, Zhang P, Wu H, Zhang Z, Wang S, Yun W, Li Y, Jia J, Liao J. SERS detection and characterization of uranyl ion sorption on silver nanorods wrapped with Al2O3 layers. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2286-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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15
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Xu L, Xiao X, Wang J, Peng P, Jiang M, Liao L. The detection of uranium(VI) with a synthesized ditopic bidentate ligand as probe by resonance light scattering. J Radioanal Nucl Chem 2017. [DOI: 10.1007/s10967-017-5199-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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16
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Li J, Li G, Han Q. Determination of trace uranium by resonance fluorescence method coupled with photo-catalytic technology and dual cloud point extraction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2016; 169:208-215. [PMID: 27380304 DOI: 10.1016/j.saa.2016.06.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2016] [Revised: 06/26/2016] [Accepted: 06/27/2016] [Indexed: 06/06/2023]
Abstract
In this paper, two kinds of salophens (Sal) with different solubilities, Sal1 and Sal2, have been respectively synthesized, and they all can combine with uranyl to form stable complexes: [UO2(2+)-Sal1] and [UO2(2+)-Sal2]. Among them, [UO2(2+)-Sal1] was used as ligand to extract uranium in complex samples by dual cloud point extraction (dCPE), and [UO2(2+)-Sal2] was used as catalyst for the determination of uranium by photocatalytic resonance fluorescence (RF) method. The photocatalytic characteristic of [UO2(2+)-Sal2] on the oxidized pyronine Y (PRY) by potassium bromate which leads to the decrease of RF intensity of PRY were studied. The reduced value of RF intensity of reaction system (ΔF) is in proportional to the concentration of uranium (c), and a novel photo-catalytic RF method was developed for the determination of trace uranium (VI) after dCPE. The combination of photo-catalytic RF techniques and dCPE procedure endows the presented methods with enhanced sensitivity and selectivity. Under optimal conditions, the linear calibration curves range for 0.067 to 6.57ngmL(-1), the linear regression equation was ΔF=438.0 c (ngmL(-1))+175.6 with the correlation coefficient r=0.9981. The limit of detection was 0.066ngmL(-1). The proposed method was successfully applied for the separation and determination of uranium in real samples with the recoveries of 95.0-103.5%. The mechanisms of the indicator reaction and dCPE are discussed.
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Affiliation(s)
- Jiekang Li
- College of Public Health, University of South China, Hengyang, Hunan 421001, China
| | - Guirong Li
- College of Public Health, University of South China, Hengyang, Hunan 421001, China.
| | - Qian Han
- College of Public Health, University of South China, Hengyang, Hunan 421001, China
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17
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A “turn-on” fluorescence assay for lead(II) based on the suppression of the surface energy transfer between acridine orange and gold nanoparticles. Mikrochim Acta 2016. [DOI: 10.1007/s00604-015-1738-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Cao JX, Wang YS, Xue JH, Huang YQ, Li MH, Chen SH, Zhou B, Tang X, Wang XF, Zhu YF. Exonuclease III-assisted substrate fragment recycling amplification strategy for ultrasensitive detection of uranyl by a multipurpose DNAzyme. RSC Adv 2016. [DOI: 10.1039/c6ra20625e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Substrate fragment cleaved by UO22+ hybridizes with SSP6 to form dsDNA, triggering substrate fragment recycling amplification by Exo III.
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Affiliation(s)
- Jin-Xiu Cao
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
- The Fifth Affiliated Hospital
| | - Yong-Sheng Wang
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Jin-Hua Xue
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Yan-Qin Huang
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Ming-Hui Li
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Si-Han Chen
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Bin Zhou
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Xian Tang
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Xiao-Feng Wang
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
| | - Yu-Feng Zhu
- College of Public Health
- University of South China
- Hengyang 421001
- PR China
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Li S, Liao L, Wu R, Yang Y, Xu L, Xiao X, Nie C. Resonance light scattering detection of fructose bisphosphates using uranyl-salophen complex-modified gold nanoparticles as optical probe. Anal Bioanal Chem 2015; 407:8911-8. [PMID: 26403237 DOI: 10.1007/s00216-015-9050-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2015] [Revised: 08/30/2015] [Accepted: 09/15/2015] [Indexed: 11/25/2022]
Abstract
In this paper, we report a resonance light scattering (RLS) method for the determination of fructose bisphosphates (FBPs) in water solution using fructose 1,6-bisphosphate (F-1,6-BP) as a model analyte without the procedure of extracting target analyte. The method used a type of modified gold nanoparticles (GNPs) as optical probe. The modified GNPs are uranyl-salophen-cysteamine-GNPs (U-Sal-Cy-GNPs) which are obtained through the acylation reaction of carboxylated salophen with cysteamine-capped GNPs (Cy-GNPs) to form Sal-Cy-GNPs and then the chelation reaction of uranyl with tetradentate ligand salophen in the Sal-Cy-GNPs. A FBP molecule is used easily to connect two U-Sal-Cy-GNPs to cause the aggregation of the GNPs by utilizing the specific affinity of uranyl-salophen complex to phosphate group, resulting in the production of strong RLS signal from the system. The amount of FBPs can be determined through detecting the RLS intensity change of the system. A linear range was found to be 2.5 to 75 nmol/L with a detection limit of 0.91 nmol/L under optimal conditions. The method has been successfully used to determine FBPs in real samples with the recoveries of 96.5-103.5 %.
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Affiliation(s)
- Shijun Li
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Lifu Liao
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China.
| | - Rurong Wu
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Yanyan Yang
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Li Xu
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Xilin Xiao
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
| | - Changming Nie
- College of Chemistry and Chemical Engineering, University of South China, Hengyang, Hunan, 421001, China
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Yan YQ, Tang X, Wang YS, Li MH, Cao JX, Chen SH, Zhu YF, Wang XF, Huang YQ. A sensitive and selective fluorescence assay for metallothioneins by exploiting the surface energy transfer between rhodamine 6G and gold nanoparticles. Mikrochim Acta 2015. [DOI: 10.1007/s00604-015-1457-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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