Crown Ether-coated Piezoelectric Crystal Sensor Array for Detection of Organic Vapor Mixtures Using Several Chemometric Methods

Xing, Wanli; He, Xiwen

doi:10.1039/a607959h

Cited by 16 publications

(7 citation statements)

References 9 publications

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“…Crown ethers-coated piezoelectric crystal sensor array is recommended for organic vapour mixture assay. 32 Piezoelectric sensors have got a high sensitivity, but they are losing the selectivity. They can easily be used for environmental analysis, for classification of organic compounds in groups, because most of them have only group selectivity, for example, a piezoelectric sensor array is proposed for simultaneous classification of organic compounds from environmental samples into alcoholic, carbonyl, etherous, and esterous group.…”

Section: Piezoelectric Sensor Arraysmentioning

confidence: 99%

“…26 ANN was found superior to MLR, PLS, and NPLS. 30,32,34 The maximum error can be obtained when MLR is used; the best results can be recorded through this mathematical model for the small interferences. PCA assures better results for gas sensor arrays.…”

Section: Chemometrics For Electrochemical Sensor Arraysmentioning

confidence: 99%

“…The modeling techniques are classified in: parametric modeling procedures (e.g., partial least squares [PLS], non-linear partial least squares [NPLS]), and nonparametric modeling procedures (e.g., multivariate adaptive regression splines, projection pursuit regression). The most used modeling techniques are multilinear regression (MLR), 30 PLS, 30-33 non-linear partial least squares (NPLS), 32 39 linear discriminant analysis (LDFA). 26 ANN was found superior to MLR, PLS, and NPLS.…”

Section: Chemometrics For Electrochemical Sensor Arraysmentioning

confidence: 99%

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Electrochemical Sensor Arrays

Stefan

Staden

Aboul‐Enein³

1999

Critical Reviews in Analytical Chemistry

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Section: Piezoelectric Sensor Arraysmentioning

confidence: 99%

Section: Chemometrics For Electrochemical Sensor Arraysmentioning

confidence: 99%

Section: Chemometrics For Electrochemical Sensor Arraysmentioning

confidence: 99%

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Electrochemical Sensor Arrays

Stefan

Staden

Aboul‐Enein³

1999

Critical Reviews in Analytical Chemistry

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“…Some conventional detection methods for harmful dye molecules such as gas chromatography, , photocatalytic gas sensing, , and piezoelectric crystal sensing , have already been reported. However, these methods often are expensive, time-consuming, or failing to specifically identify various molecules in practical applications.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of ZnO Nanocap-Ordered Arrays with Controllable Amount of Au Nanoparticles Decorated and Their Detection and Degradation Performance for Harmful Molecules

Zhang

Liu

et al. 2020

ACS Omega

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This paper mainly presents a facile and cost-effective method to achieve large-scale ZnO nanocap (ZnO NC)-ordered arrays with a controllable amount of Au nanoparticles (Au NPs) decorated on their surface. The preparation process includes the construction of polystyrene nanosphere (PS) mask, metal deposition, and annealing process. The Au NPs/ZnO NCs have apparent hierarchical structure. Interestingly, the size and number of Au NPs can be controlled by changing the time of Au deposition and the diameter of PSs. Moreover, the Au NP/ZnO NC arrays can be used as a substrate to detect harmful dye molecules based on surfaceenhanced Raman scattering (SERS) effect, and show ultrahigh sensitivity with a limit of detection (LoD) of 10 −10 M for crystal violet (CV) molecules. In addition, the above substrate has achieved reusable detection due to their excellent photocatalytic degradation performance for harmful molecules. The finite difference time-domain (FDTD) simulation results have revealed that SERS "hot spots" are almost distributed at the junctions of Au NPs and ZnO NCs. The above results show that the composite substrates have a good prospect in practical applications in the future.

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“…Crown ethers are popular synthetic molecular recognition agents, and have been used as hosts in various hostguest applications including the sensing of ions and organic vapors, 37 as chelating agents, 38 and as stationary or mobile phase components for liquid chromatography 39,40 and capillary electrophoresis. 41 It is the symmetry, cavity size and the ability to serve as hydrogen bond acceptors that make crown ethers such a useful class of molecular recognition agents.…”

Section: Introductionmentioning

confidence: 99%

Desorption electrospray ionization reactions between host crown ethers and the influenza neuraminidase inhibitor oseltamivir for the rapid screening of Tamiflu®

Nyadong

Hohenstein

Johnson

et al. 2008

Analyst

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Competitive host-guest chemistry on a desorption electrospray ionization mass spectrometry (DESI MS) platform is presented here as the basis for a rapid and quantitative screening method for assessing the quality of Tamiflu capsules with minimal sample preparation. Oseltamivir, the active ingredient in Tamiflu, is an orally active neuraminidase inhibitor antiviral. The high cost and demand for this drug has made it a target for counterfeiters, and reports of counterfeit Tamiflu capsules have already appeared. This urges the development of rapid and sensitive tools for Tamiflu authentication. The method presented here is based on the selective recognition of oseltamivir by crown ethers added to the DESI spray solvent. Crown ethers with various ring sizes were evaluated, all being observed to form stable host-guest complexes with protonated oseltamivir. The relative gas phase stability of each of the host-guest complexes was assessed and the results compared with dispersion-corrected density functional theory. Competive experiments with various pairs of crown ethers were used to assess the relative binding selectivities for oseltamivir. The abundance ratio of the formed complexes was observed to be dependent on the amount of analyte present on the surface of the sample, and independent of DESI geometric factors. These competitive reactions were then successfully tested as a means for the rapid quantitation of oseltamivir by reactive DESI MS without the need for an internal standard.

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Crown Ether-coated Piezoelectric Crystal Sensor Array for Detection of Organic Vapor Mixtures Using Several Chemometric Methods

Cited by 16 publications

References 9 publications

Electrochemical Sensor Arrays

Electrochemical Sensor Arrays

Fabrication of ZnO Nanocap-Ordered Arrays with Controllable Amount of Au Nanoparticles Decorated and Their Detection and Degradation Performance for Harmful Molecules

Desorption electrospray ionization reactions between host crown ethers and the influenza neuraminidase inhibitor oseltamivir for the rapid screening of Tamiflu®

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