Design of an ultrasonic piezoelectric injection port for analysis of thermally unstable compounds using corona discharge ion mobility spectrometry

2018 ◽  
Vol 1038 ◽  
pp. 79-86 ◽  
Author(s):  
Mohammad T. Jafari ◽  
Saeid Ramazani
2021 ◽  
Vol 27 (1) ◽  
pp. 39-47
Author(s):  
Masoumeh Ghahremani ◽  
Hafezeh Salehabadi ◽  
Hamed Bahrami ◽  
Massoud Amanlou

This study aimed at examining atmospheric-pressure chemical ionization of barbituric acid through the corona discharge ion mobility spectrometry (CD-IMS) and the quantum chemical calculations. The results indicated two product ion peaks in the IMS spectrum of barbituric acid. The thermal decomposition of the barbituric acid sample was investigated by scanning the temperature of the injection port and analyzing the temporal evolution of the IMS peaks over elapsed time. It was found that the barbituric acid sample was not thermally decomposed in the injection port of the instrument. Experimental evidences were collected by changing the reactant ions, concentration of barbituric acid sample, and IMS cell temperature. The two observed peaks were then assigned to cationic form and oxygen protonated isomers of barbituric acid. The positions of the product ion peaks were explicated considering the dipole moments of the product ions.


Talanta ◽  
2014 ◽  
Vol 120 ◽  
pp. 64-70 ◽  
Author(s):  
Jihyeon Lee ◽  
Sehwan Park ◽  
Soo Gyeong Cho ◽  
Eun Mee Goh ◽  
Sungman Lee ◽  
...  

2019 ◽  
Vol 11 (8) ◽  
pp. 1073-1079 ◽  
Author(s):  
Hajar Bahrami ◽  
Behzad Rezaei ◽  
Mohammad T. Jafari

In this research, PAN/amino-Zr-MOF nanofiber film was prepared by electrospinning technique and evaluated as a new adsorbent for thin film microextraction before analysis by CD-IMS.


Talanta ◽  
2014 ◽  
Vol 127 ◽  
pp. 239-243 ◽  
Author(s):  
Zuzana Lichvanová ◽  
Vahideh Ilbeigi ◽  
Martin Sabo ◽  
Mahmoud Tabrizchi ◽  
Štefan Matejčík

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