Fast analysis of benzodiazepines using argon direct analysis in real time mass spectrometry on-line coupled with a thermal-assisted gasification injector

AbstractIn this work an on-line monitoring method was developed to study the mechanism of acetic acid catalyzed reaction between aniline and acetonylacetone using extractive electorspray ionization-tandem mass spectrometry (EESI-MS). The signals of reactants, intermediates and various byproducts were continuously detected as a function of reaction time. The chemical assignment of each signal was done via multi-stage collision induced dissociation (CID) analysis, and the reaction mechanism between aniline and acetonylacetone was deduced based on the generated molecular ions and fragment ions. The results indicate that on-line EESI-MS is an effective technique for the real time analysis of chemical reactions. EESI avoids off-line sample pretreatment and provides “soft” ionization, which allows direct analysis of various analytes at molecular level.

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Fast analysis of glycosides based on HKUST-1-coated monolith solid-phase microextraction and direct analysis in real-time mass spectrometry

Journal of Separation Science ◽

10.1002/jssc.201601115 ◽

2017 ◽

Vol 40 (7) ◽

pp. 1589-1596 ◽

Cited By ~ 15

Author(s):

Xianjiang Li ◽

Xin Wang ◽

Wen Ma ◽

Wanpeng Ai ◽

Yu Bai ◽

...

Keyword(s):

Mass Spectrometry ◽

Real Time ◽

Solid Phase Microextraction ◽

Solid Phase ◽

Direct Analysis ◽

Fast Analysis

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Solid-phase extraction with the metal-organic framework MIL-101(Cr) combined with direct analysis in real time mass spectrometry for the fast analysis of triazine herbicides

Journal of Separation Science ◽

10.1002/jssc.201400151 ◽

2014 ◽

Vol 37 (12) ◽

pp. 1489-1495 ◽

Cited By ~ 50

Author(s):

Xianjiang Li ◽

Jiawei Xing ◽

Cuilan Chang ◽

Xin Wang ◽

Yu Bai ◽

...

Keyword(s):

Mass Spectrometry ◽

Solid Phase Extraction ◽

Real Time ◽

Solid Phase ◽

Metal Organic Framework ◽

Direct Analysis ◽

Phase Extraction ◽

Triazine Herbicides ◽

Fast Analysis ◽

Metal Organic

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Determination of ochratoxin A in wine by direct analysis in real time-tandem mass spectrometry

Chinese Journal of Chromatography ◽

10.3724/sp.j.1123.2016.07008 ◽

2017 ◽

Vol 35 (2) ◽

pp. 185 ◽

Cited By ~ 1

Author(s):

Xiaoming GONG ◽

Ronghui MA ◽

Hongtao WANG ◽

Liqiang GUO ◽

Kai LI ◽

...

Keyword(s):

Mass Spectrometry ◽

Tandem Mass Spectrometry ◽

Real Time ◽

Ochratoxin A ◽

Direct Analysis ◽

Tandem Mass

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Thermal Properties, Isothermal Decomposition by Direct Analysis in Real-Time-Of-Flight Mass Spectrometry and Non Isothermal Crystallization Kinetics of Poly(Ethylene-Co-Vinyl Alcohol)/Poly(ε-Caprolactone) Blend

Crystals ◽

10.3390/cryst11030292 ◽

2021 ◽

Vol 11 (3) ◽

pp. 292

Author(s):

Abdulaziz Ali Alghamdi ◽

Hussain Alattas ◽

Waseem Sharaf Saeed ◽

Abdel-Basit Al-Odayni ◽

Ahmed Yacine Badjah Hadj Ahmed ◽

...

Keyword(s):

Mass Spectrometry ◽

Real Time ◽

Crystallization Kinetics ◽

Isothermal Crystallization ◽

Vinyl Alcohol ◽

Time Of Flight ◽

Direct Analysis ◽

Isothermal Crystallization Kinetics ◽

Flight Mass Spectrometry ◽

Poly Ethylene

A series of poly(ethylene-co-vinyl alcohol)/poly(ε-caprolactone) blends with different compositions were prepared using solvent casting. The miscibility of this pair of polymers was investigated using differential scanning calorimetry (DSC), and proved by a negative Flory interaction parameter value calculated from the Nishi–Wang equation. The miscibility of this blend was also confirmed by scanning electronic microscopy (SEM). The thermal behaviors of the obtained materials were investigated by DSC, thermogravimetric analysis, and direct analysis in real-time–time-of-flight mass spectrometry and the results obtained were very relevant. Furthermore, the crystalline properties of the obtained materials were studied by DSC and X-ray diffraction where the Ozawa approach was adopted to investigate the non-isothermal crystallization kinetics. The results obtained revealed that this approach described the crystallization process well.

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