Determination of Benzalkonium Chloride by Chemical Ionization Mass Spectroscopy

1983 ◽  
Vol 72 (3) ◽  
pp. 290-292 ◽  
Author(s):  
N.N. Daoud ◽  
P.A. Crooks ◽  
R. Speak ◽  
P. Gilbert
Keyword(s):  
Mass Spectroscopy ◽  
Benzalkonium Chloride ◽  
Chemical Ionization ◽  
Ionization Mass ◽  
Ionization Mass Spectroscopy

scholarly journals Development of a photochemical source for the production and calibration of acyl peroxynitrate compounds

2015 ◽  
Vol 8 (5) ◽  
pp. 2225-2231 ◽  
Author(s):  
P. R. Veres ◽  
J. M. Roberts
Keyword(s):  
Dynamic System ◽  
Mass Spectroscopy ◽  
Chemical Ionization ◽  
Acyl Chloride ◽  
Ionization Mass ◽  
Gas Chromatograph ◽  
Iodide Ion ◽  
Ionization Mass Spectroscopy ◽  
Subsequent Separation ◽  
Standard Production

Abstract. A dynamic system for the calibration of acyl peroxynitrate compounds (APNs) has been developed in the laboratory to reduce the difficulty, required time, and instability of laboratory-produced standards for difficult-to-synthesize APN species. In this work we present a photochemical source for the generation of APN standards: acetyl peroxynitrate (PAN), propionyl peroxynitrate (PPN), acryloyl peroxynitrate (APAN), methacryloyl peroxynitrate (MPAN), and crotonyl peroxynitrate (CPAN). APNs are generated via photolysis of a mixture of acyl chloride (RC(O)Cl) and ketone (RC(=O)R) precursor compounds in the presence of O2 and NO2. Subsequent separation by a prep-scale gas chromatograph and detection with a total NOy instrument serve to quantify the output of the APN source. Validation of the APN products was performed using iodide ion chemical ionization mass spectroscopy (I- CIMS). This method of standard production is an efficient and accurate technique for the calibration of instrumentation used to measure PAN, PPN, APAN, MPAN, and CPAN.

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