Enhancing Sensitivity for High-Selectivity Gas Chromatography-Molecular Rotational Resonance Spectroscopy

Author(s):  
M. Farooq Wahab ◽  
Saba Aslani ◽  
Alexander V. Mikhonin ◽  
Justin L. Neill ◽  
Daniel W. Armstrong
2019 ◽  
Vol 132 (1) ◽  
pp. 198-202 ◽  
Author(s):  
Daniel W. Armstrong ◽  
Mohsen Talebi ◽  
Nimisha Thakur ◽  
M. Farooq Wahab ◽  
Alexander V. Mikhonin ◽  
...  

2019 ◽  
Vol 59 (1) ◽  
pp. 192-196 ◽  
Author(s):  
Daniel W. Armstrong ◽  
Mohsen Talebi ◽  
Nimisha Thakur ◽  
M. Farooq Wahab ◽  
Alexander V. Mikhonin ◽  
...  

2015 ◽  
Author(s):  
Brent J. Harris ◽  
Robin L. Pulliam ◽  
Justin L. Neill ◽  
Matt T. Muckle ◽  
Roger Reynolds ◽  
...  

1969 ◽  
Vol 23 (6) ◽  
pp. 575-581 ◽  
Author(s):  
Stuart Armstrong

A number of recent review articles have summarized the application of Molecular Rotational Resonance (MRR) spectroscopy to the area of molecular structure determinations and described how these applications have applied to chemistry. This article will briefly review this established area of MRR spectroscopy and describe two developments that offer the promise of expanding the applicability of MRR spectroscopy. The first development was the observation that some large molecules (by MRR standards) give a series of relatively intense, equally spaced bands that can be quickly recorded and assigned. The other development has been in the theory, procedures, and instrumentation required for accurate intensity measurements. These two developments, examples of each, and the implication of each for use by chemists, as well as molecular structure determinations, will be discussed. Spectrometers that are being used for studies in this established area and the two newer areas will be described in the Appendix.


2000 ◽  
Vol 83 (1) ◽  
pp. 178-182 ◽  
Author(s):  
Urania Menkissoglu-Spiroudi ◽  
Grigorios C Diamantidis ◽  
Vassiliki E Georgiou ◽  
Andreas T Thrasyvoulou

Abstract A rapid, reliable, and inexpensive extraction method was developed to determine acaricide residues in honey by gas chromatography (GC) with nitrogen–phosphorus (NP) or electron capture (EC) detectors. Because of the high selectivity of the NP detector, no interfering peaks were present and no cleanup was necessary. A simple cleanup step is proposed for the GC–ECD analysis. Recoveries from spiked honey samples ranged from 79 to 94.4%, with coefficients of variation of 0.3–18.5%. The quantitation limit obtained was 0.015 mg/kg for malathion, 0.020 mg/kg for coumaphos, and 0.005 mg/kg for fluvalinate. The method was used to determine the disappearance of malathion and coumaphos residues from honey samples collected from beehives treated with these acaricides. The disappearance of both acaricides was rapid and followed a first-order model for the duration of the experiment.


RSC Advances ◽  
2015 ◽  
Vol 5 (93) ◽  
pp. 76007-76013 ◽  
Author(s):  
Yingzhen Wang ◽  
Meiling Qi ◽  
Ruonong Fu

The binary stationary phase of CB7 in an ionic liquid shows high selectivity and resolving ability for diverse analytes via multiple molecular interactions and unique retention mechanism.


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