Highly ordered surfactant micelles function as the extraction matrix for direct electrochemical detection of halonitrobenzenes at the ppb level
Literature Information
Lina Yao, Fei Yan, Bin Su
Halonitrobenzenes (HNBs) are a class of molecules that are highly toxic to human health and the ecological environment. Thus, effective and efficient approaches capable of monitoring and detecting HNBs are greatly desired. We report herein a simple and sensitive method for the detection of HNBs. The detection was based on the indium tin oxide (ITO) electrodes modified with a binary assembly of highly ordered surfactant micelles (OSMs) and silica mesochannels (SMs). The SMs have a diameter of 2–3 nm and a vertical orientation, which provide a hard support to stabilize soft OSMs. Moreover, each OSM consists of a hydrophobic core due to the organized assembly of surfactant hydrocarbon chains, which can selectively extract and concentrate lipophilic HNBs from aqueous media, allow their transport to the underlying ITO electrode surface and therein their detection by voltammetry. As a proof-of-concept experiment, 1-chloro-3-nitrobenzene, 1-chloro-4-nitrobenzene, 1-bromo-4-nitrobenzene and 2,4-dinitrobromobenzene were analyzed in aqueous solutions. A simple and fast detection was achieved in all cases, with a wide linear dynamic range, a high sensitivity and a low limit of detection at the ppb level. Apart from the extraction ability, the OSMs also prohibited the access of and surface contamination by unwanted substances, showing excellent anti-fouling and anti-interference power. Indeed, as we demonstrated, the sensor could be employed for direct electrochemical detection of HNBs in complex samples, such as lake water and soil dispersion, without any pre-treatment, indicating its potential usefulness in practical analysis.
Related Literature
Improved oxygen mobility in nanosized mixed-oxide particles synthesized using a simple nanocasting route
Magali Bonne, Nicolas Bion, Frédéric Pailloux, Sabine Valange, Sébastien Royer, Jean-Michel Tatibouët, Daniel Duprez
DOI: 10.1039/B808699K
Unilamellar composite vesicles and Y-junctions from pristine fullerene C60
Illa Ramakanth, Balachandran Vijai Shankar, Archita Patnaik
DOI: 10.1039/B806772D
Type-II CdS nanoparticle–ZnOnanowire heterostructure arrays fabricated by a solution process: enhanced photocatalytic activity
Youngjo Tak, Hyeyoung Kim, Dongwook Lee, Kijung Yong
DOI: 10.1039/B810388G
Chemoenzymatic synthesis of GDP-azidodeoxymannoses: non-radioactive probes for mannosyltransferase activity
Silvia Marchesan, Derek Macmillan
DOI: 10.1039/B807016D
A self-propagating system for Ge incorporation into nanostructured silica
Aubrey K. Davis, Mark Hildebrand
DOI: 10.1039/B804955F
A facile approach to fabricate functionalized superparamagnetic copolymer-silica nanocomposite spheres
Dechao Niu, Yongsheng Li, Xiaoli Qiao, Liang Li, Wenru Zhao, Hangrong Chen, Qiaoling Zhao, Zhi Ma
DOI: 10.1039/B807781A
An organopalladium chromogenic chemodosimeter for the selective naked-eye detection of Hg2+ and MeHg+ in water–ethanol 1 : 1 mixture
O. del Campo, A. Carbayo, J. V. Cuevas, A. Muñoz, G. García-Herbosa, D. Moreno, E. Ballesteros, S. Basurto, T. Gómez, T. Torroba
DOI: 10.1039/B807670G
Mesogenic dipyrrins—building blocks for the fabrication of fluorescent and metal-containing materials
Christopher J. Wilson, Leanne James, Georg H. Mehl, Ross W. Boyle
DOI: 10.1039/B806672H
Hydroxylamine as an oxygen nucleophile. Chemical evidence from its reaction with a phosphate triester
Anthony J. Kirby, Bruno S. Souza, Michelle Medeiros, Jacks P. Priebe, Alex M. Manfredi, Faruk Nome
DOI: 10.1039/B810408E
You might also like
What precautions should be taken when handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3)?
When handling 4-(2-Furylmethyl)thiomorpholine 1,1-dioxide (CAS: 79206-94-3), it ...
What precautions should be taken when handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9)?
When handling 4-Chloro-N-[2-(4-morpholinyl)ethyl]benzamide (CAS: 71320-77-9), it...
How should waste containing 2-[2-(2-Methoxyethoxy)ethoxy]ethyl 4-methylbenzenesulfonate (CAS: 62921-74-8) be handled?
Waste containing this compound (CAS: 62921-74-8) should be handled according to ...
How should waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate be handled?
Waste containing (S)-Methyl 2-amino-3-cyclohexylpropanoate should be collected i...
How is 5-({4-[(2S,4R)-4-Hydroxy-2-methyltetrahydro-2H-pyran-4-yl]-2-thienyl}sulfanyl)-1-methyl-1,3-dihydro-2H-indol-2-one (CAS: 166882-70-8) typically synthesized?
This compound can be synthesized using a multi-step process involving the conjug...
Are there alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid (CAS: 7312-27-8) in synthesis?
There are several alternatives to (2E)-3-(3,4-Dichlorophenyl)acrylic acid in syn...
How should Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84-9) be stored?
Ethyl 6-(2-nitrophenyl)imidazo[2,1-b][1,3]thiazole-3-carboxylate (CAS: 925437-84...
How should waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) be handled?
Waste containing 2-(1,3-Thiazol-2-yl)ethanamine (CAS: 18453-07-1) should be coll...
How is Methyl 5-iodo-2-methylbenzoate (CAS: 103440-54-6) typically synthesized?
Methyl 5-iodo-2-methylbenzoate can be synthesized through the iodination of meth...
How is 5-Chloro[1,2,4]triazolo[1,5-a]pyridine (CAS: 1427399-34-5) typically synthesized?
5-Chloro[1,2,4]triazolo[1,5-a]pyridine is commonly synthesized via the condensat...
Source Journal
Analyst

Analyst publishes analytical and bioanalytical research that reports premier fundamental discoveries and inventions, and the applications of those discoveries, unconfined by traditional discipline barriers.














