1
|
Fluorescence 'Turn-on' Dual Sensor for Selective Detection of Cd 2+ and H 2AsO 4- in Water. J Fluoresc 2023; 33:517-526. [PMID: 36449225 DOI: 10.1007/s10895-022-03091-1] [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: 04/06/2022] [Accepted: 11/15/2022] [Indexed: 12/02/2022]
Abstract
A multi responsive fluorescent probe, N',2-bis(E-4-(diethylamino)-2-hydroxybenzylidene)hydrazine-1-carbothiohydrazideV(H2L) has been synthesized through one step condensation method. Probe, H2L shows 'turn-on' dual sensing properties towards Cd2+ and H2AsO4- at two distinct wavelength. The probe (H2L) is spectroscopically characterized and the chemo-sensing mechanism has been demonstrated through 1H NMR, absorption, steady state and time resolved emission study. The most promising advantage of the probe is its application in the one-pot detection of Cd2+ (λem = 462 nm) and H2AsO4-(λem = 492 nm) where intense emission appears at two different wavelengths and the observed limit of detection (LOD) of H2L towards Cd2+ and H2AsO4- are 2.67 × 10-8 M and 5.14 × 10-6 M respectively. Further the 'turn-on' emission property of H2L towards Cd2+ is applied to construct INHIBIT logic gate.
Collapse
|
2
|
Das M, Gangopadhyay D, Pelc R, Hadravová R, Šebestík J, Bouř P. Aggregation-aided SERS: Selective detection of arsenic by surface-enhanced Raman spectroscopy facilitated by colloid cross-linking. Talanta 2023; 253:123940. [DOI: 10.1016/j.talanta.2022.123940] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 08/26/2022] [Accepted: 09/14/2022] [Indexed: 11/30/2022]
|
3
|
Chowdhury T, Chakraborty T, Ghosh A, Das AK, Das D. ZnAl 2O 4 Nanomaterial as a Naked-Eye Arsenate Sensor: A Combined Experimental and Computational Mechanistic Approach. ACS APPLIED MATERIALS & INTERFACES 2022; 14:32457-32473. [PMID: 35797477 DOI: 10.1021/acsami.2c04875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Raising public awareness over the emerging health risk due to intake of arsenic-contaminated potable water is a matter of great concern. Exploration of cost-effective, self-testing kits is a substantial way to reach out to the masses and detect the presence of arsenate in water. With this agenda, a photoluminescent Mannich base Zn(II) complex (ZnMC = [Zn2(ML)2]·(ClO4)2·(H2O); HML = Mannich base ligand) has been synthesized, and its dinuclearity was verified with single-crystal X-ray diffraction structural analysis. Among a range of anions, ZnMC was found to detect arsenate selectively by showing a turn-off emission with a color change from bright green to dark under UV light. The real-life applicability of the ZnMC probe is somewhat restricted to only sensing of arsenate, but not its removal owing to the fact of its homogeneity. Considering the efficacy of ZnMC as well as a need for its easy removal from water, slight modification has been done with chloride ions in the form of ZnMC″ (=[Zn2(ML)2(Cl)2]), and finally, an interface between homogeneous and heterogeneous solid support has been explored with a strategic fabrication of ZnMC″ grafted ZnAl2O4, named as ZAZ nanomaterial. This not only imparts successful segregation of arsenate from drinking water but also provides naked-eye detection under ambient light as well as UV light. Thermodynamic parameters associated with the binding of arsenate to ZnMC and ZAZ have been evaluated through isothermal calorimetric (ITC) measurements. Steady-state and time-resolved fluorescence titration study, absorption titration study, scanning electron microscopy (SEM), transmission electron microscopy (TEM), and computational calculations have been performed to get deep insights into the sensing properties. Proper justification of the sensing mechanism is the highlight of this work. ZAZ nanomaterial has been exploited to produce a self-test paper kit for arsenate detection with a limit of 9.86 ppb, which potentially enables applications in environmental monitoring.
Collapse
Affiliation(s)
- Tania Chowdhury
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| | - Tonmoy Chakraborty
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Avik Ghosh
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Abhijit K Das
- School of Mathematical & Computational Sciences, Indian Association for the Cultivation of Science, 2A & 2B, Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, India
| | - Debasis Das
- Department of Chemistry, University College of Science, University of Calcutta, 92 A. P. C. Road, Kolkata 700009, India
| |
Collapse
|
4
|
Preparation of GO/Fe 3O 4@PMDA/AuNPs nanocomposite for simultaneous determination of As 3+ and Cu 2+ by stripping voltammetry. Talanta 2021; 230:122288. [PMID: 33934761 DOI: 10.1016/j.talanta.2021.122288] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 02/23/2021] [Accepted: 02/24/2021] [Indexed: 12/14/2022]
Abstract
One of the critical challenges in the simultaneous determination of As3+ and Cu2+ by stripping voltammetry is the overlapping of their oxidation peaks. Therefore, the engineering of nanostructured sensors in order to uplift their electrochemical performance is a significant issue for the codetection of As3+ and Cu2+. Herein, we modified a glassy carbon electrode with a new nanocomposite based on poly methyldopa along with gold nanoparticles immobilized on the surface of magnetic graphene oxide (GCE/GO/Fe3O4@PMDA/AuNPs) that can determine As3+ and Cu2+ with great sensitivity. Optimization of the measurement conditions by square wave stripping voltammetry (SWSV) caused the oxidation peaks of As3+ and Cu2+ to be distinguished significantly from each other, while the peak currents of As3+ and Cu2+ increased 9-12 fold, respectively, compared to the bare electrode. The proposed electrode exhibits low detection limits (S/N ≥ 3): 0.15 ppb for As3+ and 0.11 ppb for Cu2+. The GCE/GO/Fe3O4@PMDA/AuNPs also has good linearity over a wide concentration range from 5 to 500 ppb for As3+ and 0.5-750 ppb for Cu2+. The good recovery values were obtained for the analysis of As3+ and Cu2+ in pool and drinking water samples.
Collapse
|
5
|
Sullivan C, Lu D, Brack E, Drew C, Kurup P. Voltammetric codetection of arsenic(III) and copper(II) in alkaline buffering system with gold nanostar modified electrodes. Anal Chim Acta 2020; 1107:63-73. [DOI: 10.1016/j.aca.2020.02.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/30/2020] [Accepted: 02/06/2020] [Indexed: 11/29/2022]
|
6
|
Li SS, Zhou WY, Li YX, Jiang M, Guo Z, Liu JH, Huang XJ. Noble-Metal-Free Co0.6Fe2.4O4 Nanocubes Self-Assembly Monolayer for Highly Sensitive Electrochemical Detection of As(III) Based on Surface Defects. Anal Chem 2017; 90:1263-1272. [DOI: 10.1021/acs.analchem.7b04025] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Shan-Shan Li
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Wen-Yi Zhou
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Yi-Xiang Li
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Min Jiang
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Zheng Guo
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
| | - Jin-Huai Liu
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| | - Xing-Jiu Huang
- Key Laboratory
of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
- University of Science and Technology of China, Hefei 230026, People’s Republic of China
| |
Collapse
|
7
|
Gong L, Du B, Pan L, Liu Q, Yang K, Wang W, Zhao H, Wu L, He Y. Colorimetric aggregation assay for arsenic(III) using gold nanoparticles. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2122-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
|
8
|
Venkateswarulu M, Gambhir D, Kaur H, Daniel PV, Mondal P, Koner RR. A long-range emissive mega-Stokes inorganic–organic hybrid material with peripheral carboxyl functionality for As(v) recognition and its application in bioimaging. Dalton Trans 2017; 46:13118-13125. [DOI: 10.1039/c7dt02387a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We demonstrate a strategy for the recognition of As5+ in aqueous solution using a red-emissive probe based on a perylene–Cu2+ ensemble decorated with peripheral free carboxyl functionality.
Collapse
Affiliation(s)
- M. Venkateswarulu
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Diksha Gambhir
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Harpreet Kaur
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - P. Vineeth Daniel
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Prosenjit Mondal
- School of Basic Sciences
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| | - Rik Rani Koner
- School of Engineering
- Indian Institute of Technology Mandi
- Mandi-175001
- India
| |
Collapse
|
9
|
Sun Q, Yang L, Su L, Liu W, Wang Y, Yu S, Jiang C, Zhang Z. Colloidal quantum dot chains: self-assembly mechanism and ratiometric fluorescent sensing. RSC Adv 2017. [DOI: 10.1039/c7ra10259c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Colloidal quantum dot chains self-assembled via the mediation of trithiocyanuric acid (TTCA) and ratiometric fluorescent sensing with blue emitting carbon dots (CDs) for As(iii).
Collapse
Affiliation(s)
- Qin Sun
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Liang Yang
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Lei Su
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Weikang Liu
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Yifan Wang
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Shaoming Yu
- Department of Chemistry
- University of Science and Technology of China
- Hefei
- China
| | - Changlong Jiang
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| | - Zhongping Zhang
- CAS Center for Excellence in Nanoscience
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
| |
Collapse
|
10
|
Boxi SS, Paria S. Fluorometric sensing of ultralow As(III) concentrations using Ag doped hollow CdS/ZnS bi-layer nanoparticles. Dalton Trans 2015; 44:20464-74. [PMID: 26541652 DOI: 10.1039/c5dt03958d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Arsenic poisoning from drinking water has been an important global issue in recent years. Because of the high level toxicity of arsenic to human health, an easy, inexpensive, low level and highly selective detection technique is of great importance to take any early precautions. This study reports the synthesis of Ag doped hollow CdS/ZnS bi-layer (Ag-h-CdS/ZnS) nanoparticles for the easy fluorometric determination of As(iii) ions in the aqueous phase. The hollow bi-layer structures were synthesized by a sacrificial core method using AgBr as the sacrificial core and the core was removed by dissolution in an ammonium hydroxide solution. The synthesized nanoparticles were characterized using different instrumental techniques. A good linear relationship was obtained between fluorescence quenching intensity and As(iii) concentration in the range of 0.75-22.5 μg L(-1) at neutral pH with a limit of detection as low as 0.226 μg L(-1).
Collapse
Affiliation(s)
- Siddhartha Sankar Boxi
- Interfaces and Nanomaterials Laboratory, Department of Chemical Engineering, National Institute of Technology, Rourkela 769008, Orissa, India.
| | | |
Collapse
|
11
|
Facile one-pot and rapid synthesis of surfactant-free Au-reduced graphene oxide nanocomposite for trace arsenic (III) detection. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2014.12.150] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
|
12
|
Islam ASM, Alam R, Katarkar A, Chaudhuri K, Ali M. Di-oxime based selective fluorescent probe for arsenate and arsenite ions in a purely aqueous medium with living cell imaging applications and H-bonding induced microstructure formation. Analyst 2015; 140:2979-83. [DOI: 10.1039/c5an00236b] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A 2-hydroxy-5-methyl-benzene-1,3-dicarboxaldehyde di-oxime based turn-on blue emission fluorescent probe was found to recognize both AsO2− and H2AsO4− in a purely aqueous medium in intra and extra-cellular conditions.
Collapse
Affiliation(s)
| | - Rabiul Alam
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| | - Atul Katarkar
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Keya Chaudhuri
- Molecular & Human Genetics Division
- CSIR-Indian Institute of Chemical Biology
- Kolkata-700032
- India
| | - Mahammad Ali
- Department of Chemistry
- Jadavpur University
- Kolkata 700 032
- India
| |
Collapse
|
13
|
Khaligh A, Mousavi HZ, Shirkhanloo H, Rashidi A. Speciation and determination of inorganic arsenic species in water and biological samples by ultrasound assisted-dispersive-micro-solid phase extraction on carboxylated nanoporous graphene coupled with flow injection-hydride generation atomic absorption spectrometry. RSC Adv 2015. [DOI: 10.1039/c5ra17229b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this paper, carboxylated nanoporous graphene as a nanoadsorbent was evaluated in two types of ultrasound assisted-dispersive micro-solid phase extraction for speciation of trace As(v) and As(iii) ions in natural water and human biological samples.
Collapse
Affiliation(s)
- Aisan Khaligh
- Department of Chemistry
- Semnan University
- Semnan 35131-1911
- Iran
| | | | - Hamid Shirkhanloo
- Occupational and Environmental Health Research Center (OEHRC)
- Iranian Petroleum
- Tehran
- Iran
| | - Alimorad Rashidi
- Nanotechnology Research Center
- Research Institute of Petroleum Industry
- Tehran 1485733111
- Iran
| |
Collapse
|
14
|
Yang B, Chen X, Liu R, Liu B, Jiang C. Target induced aggregation of modified Au@Ag nanoparticles for surface enhanced Raman scattering and its ultrasensitive detection of arsenic(iii) in aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra15954g] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A highly sensitive and selective detection of As(iii) was reported by target induced aggregation of nanoparticles enhanced Raman spectroscopic technique.
Collapse
Affiliation(s)
- Bo Yang
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
- Department of Chemistry
| | - Xiaochun Chen
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
- Department of Chemistry
| | - Renyong Liu
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
- State Key Laboratory of Transducer Technology Chinese Academy of Sciences
| | - Bianhua Liu
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
- Department of Chemistry
| | - Changlong Jiang
- Institute of Intelligent Machines
- Chinese Academy of Sciences
- Hefei
- China
- Department of Chemistry
| |
Collapse
|
15
|
|
16
|
Ma J, Sengupta MK, Yuan D, Dasgupta PK. Speciation and detection of arsenic in aqueous samples: A review of recent progress in non-atomic spectrometric methods. Anal Chim Acta 2014; 831:1-23. [DOI: 10.1016/j.aca.2014.04.029] [Citation(s) in RCA: 122] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/08/2014] [Accepted: 04/15/2014] [Indexed: 11/26/2022]
|
17
|
Banerjee A, Sahana A, Lohar S, Panja S, Mukhopadhyay SK, Das D. Visible light excitable fluorescence probe and its functionalized Merrifield polymer: selective sensing and removal of arsenate from real samples. RSC Adv 2014. [DOI: 10.1039/c3ra45362f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
|
18
|
Sahana A, Banerjee A, Lohar S, Panja S, Mukhopadhyay SK, Matalobos JS, Das D. Fluorescence sensing of arsenate at nanomolar level in a greener way: naphthalene based probe for living cell imaging. Chem Commun (Camb) 2013; 49:7231-3. [PMID: 23841111 DOI: 10.1039/c3cc43211d] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Naphthalene-salisaldehyde conjugate (NAPSAL) is established as a novel arsenate (H2AsO4(-)) selective 'turn-on' fluorescence probe. It can detect as low as 5 × 10(-9) M H2AsO4(-) in HEPES buffered EtOH : water (0.1 M, 1 : 9, v/v, pH 7.4). Trace level H2AsO4(-) in drinking water samples is measured using standard addition method. Intracellular arsenate in Candida albicans, grown in arsenic contaminated water of Purbasthali has successfully been detected under fluorescence microscope.
Collapse
Affiliation(s)
- Animesh Sahana
- Department of Chemistry, The University of Burdwan, 713104, Burdwan, West Bengal, India
| | | | | | | | | | | | | |
Collapse
|
19
|
Wu Y, Wang F, Zhan S, Liu L, Luo Y, Zhou P. Regulation of hemin peroxidase catalytic activity by arsenic-binding aptamers for the colorimetric detection of arsenic(iii). RSC Adv 2013. [DOI: 10.1039/c3ra44346a] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
|
20
|
Wu Y, Zhan S, Xing H, He L, Xu L, Zhou P. Nanoparticles assembled by aptamers and crystal violet for arsenic(III) detection in aqueous solution based on a resonance Rayleigh scattering spectral assay. NANOSCALE 2012; 4:6841-6849. [PMID: 23034818 DOI: 10.1039/c2nr31418e] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Aptamer-assembled nanomaterials have captured much attention from the field of analytical chemistry in recent years. Although they have been regarded as a promising tool for heavy metal monitoring, report involving aptamer-based biosensors for arsenic detection are rare. Herein we developed a highly sensitive and selective aptamer biosensor for As(iii) detection based on a Resonance Rayleigh Scattering (RRS) spectral assay. Prior to As(iii) detection, we firstly assembled a variety of nanoparticles with different sizes via controlling the concentration of arsenic-binding aptamers in crystal violet (CV) solutions. The results of photon correlation spectroscopy (PCS) and scanning probe microscope (SPM) testified that the introduction of As(iii) had indeed changed the size of nanoparticles, which caused a great variation in the RRS intensity at 310 nm. In the presence of 100 ppb As(iii), a maximum decline in the ratio of RRS intensity was achieved for large nanoparticles assembled from 200 nM of aptamers and CV molecules, where the average size of nanoparticles had decreased from 273 nm to 168 nm. In the case of small nanoparticles, the maximum increase ratio of the RRS intensity was obtained when the concentration of aptamer was over 600 nM. Combined with an RRS spectral assay, an effective biosensor has been developed for As(iii) detection, using the above large and small nanoparticles as the target recognition element. The present biosensor has a detection limit as low as 0.2 ppb, a dynamic range from 0.1 ppb to 200 ppb, and high selectivity over other metal ions. Such an efficient biosensor will play an important role in environmental detection.
Collapse
Affiliation(s)
- Yuangen Wu
- Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai, 200240, China
| | | | | | | | | | | |
Collapse
|
21
|
Wu Y, Liu L, Zhan S, Wang F, Zhou P. Ultrasensitive aptamer biosensor for arsenic(III) detection in aqueous solution based on surfactant-induced aggregation of gold nanoparticles. Analyst 2012; 137:4171-8. [PMID: 22842645 DOI: 10.1039/c2an35711a] [Citation(s) in RCA: 101] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This paper reports the colorimetric and resonance scattering (RS)-based biosensor for the ultrasensitive detection of As(III) in aqueous solution via aggregating gold nanoparticles (AuNPs) by the special interactions between arsenic-binding aptamer, target and cationic surfactant. Aptamers and the cationic surfactant could assemble to form a supramolecule, which prevented AuNPs from aggregating due to the exhaustion of cationic surfactant. The introduction of As(III) specifically interacted with the arsenic-binding aptamer to form the aptamer-As(III) complex, so that the following cationic surfactant could aggregate AuNPs and cause the remarkable change in color and RS intensity. The results of circular dichroism (CD) and scanning probe microscope (SPM) testified to the formation of the supramolecule and aptamer-As(III) complex, and the observation of transmission electron microscope (TEM) further confirmed that the aggregation of AuNPs could be controlled by the interactions among the aptamer, As(III) and cationic surfactant. The variations of absorbance and RS intensity were exponentially related to the concentration of As(III) in the range from 1 to 1500 ppb, with the detection limit of 40 ppb for the naked eye, 0.6 ppb for colorimetric assay and 0.77 ppb for RS assay. Additionally, the speed of the present biosensor was rapid, and it also exhibited high selectivity over other metal ions with an excellent recovery for detection in real water samples, suggesting that the proposed biosensor will play an important role in environmental detection.
Collapse
Affiliation(s)
- Yuangen Wu
- Key Laboratory of Urban Agriculture, Ministry of Agriculture, Shanghai Jiao Tong University, China
| | | | | | | | | |
Collapse
|
22
|
Wu Y, Zhan S, Wang F, He L, Zhi W, Zhou P. Cationic polymers and aptamers mediated aggregation of gold nanoparticles for the colorimetric detection of arsenic(III) in aqueous solution. Chem Commun (Camb) 2012; 48:4459-61. [PMID: 22453203 DOI: 10.1039/c2cc30384a] [Citation(s) in RCA: 198] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
As(III) specifically interacts with an arsenic-binding aptamer to form an As(III)-aptamer complex, so that the following cationic polymer can aggregate gold nanoparticles (AuNPs) and cause a remarkable change in color, which enables the colorimetric detection of As(III) with high selectivity and a detection limit of 5.3 ppb.
Collapse
Affiliation(s)
- Yuangen Wu
- School of Environmental Science and Engineering, and Key Laboratory of Urban Agriculture (South), Ministry of Agriculture, Shanghai Jiao Tong University, Shanghai, 200240, China
| | | | | | | | | | | |
Collapse
|
23
|
Chen L, Zhou N, Li J, Chen Z, Liao C, Chen J. Synergy of glutathione, dithiothreitol and N-acetyl-l-cysteine self-assembled monolayers for electrochemical assay: sensitive determination of arsenic(iii) in environmental and drinking water. Analyst 2011; 136:4526-32. [DOI: 10.1039/c1an15454k] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
24
|
Ensafi AA, Nazari Z, Fritsch I. Highly Sensitive Differential Pulse Voltammetric Determination of Cd, Zn and Pb Ions in Water Samples Using Stable Carbon-Based Mercury Thin-Film Electrode. ELECTROANAL 2010. [DOI: 10.1002/elan.201000246] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|