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J Mass Spectrom

Title:		Ionization of organic molecules with metal ions formed in the laser plasma
Author(s):		Filatov VV; Nikiforov SM; Zelenov VV; Pento AV; Bukharina AB; Sulimenkov IV; Brusov VS; Yu J; Kozlovskiy VI;
Address:		"Chernogolovka Branch of the N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia. Prokhorov General Physics Institute, RAS, Moscow, 119991, Russia. Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, China"
Journal Title:		J Mass Spectrom
Year:		2021
Volume:		56
Issue:		5
Page Number:		e4723 -
DOI:		10.1002/jms.4723
ISSN/ISBN:		1096-9888 (Electronic) 1076-5174 (Linking)
Abstract:		"A laser plasma ion source was used to ionize volatile organic compounds in a gas sample. The plasma was generated on a metal target in the intermediate vacuum region of ~0.3 Torr using a pulsed Nd:YAG laser with a wavelength of 1 mum. The resulting ions mass spectra were acquired using orthogonal time-of-flight mass spectrometer (O-TOF MS). When using a copper target, the ions formed are simple complexes (CuM(+) ) of copper ions with organic molecules. The possibility of online identification of trace amounts of alkanes in nitrogen and air, with a detection limit of ~10 ppb, was demonstrated. The ionization efficiency of volatile organic compounds through the formation of clusters with metal ions is 10(-4) in terms of the quasimolecular complex ions. The rate constants of ion-molecular reactions of copper ions with octane and water molecules in nitrogen and air are estimated"
Keywords:		Cu complex ionization octane rate constant;
Notes:		"PubMed-not-MEDLINEFilatov, Vasily V Nikiforov, Sergey M Zelenov, Vladislav V Pento, Andrey V Bukharina, Aygul B Sulimenkov, Ilia V Brusov, Vladimir S Yu, Jiajun Kozlovskiy, Viacheslav I eng capital A, Cyrilliccapital A, Cyrilliccapital A, Cyrilliccapital A, Cyrillic-capital A, Cyrillic18-118112690060-9/2013-2020 Program of Basic Research of the Russian State Academies of Sciences/ capital A, Cyrilliccapital A, Cyrilliccapital A, Cyrilliccapital A, Cyrillic-capital A, Cyrillic19-119121790091-3/2013-2020 Program of Basic Research of the Russian State Academies of Sciences/ England 2021/04/05 J Mass Spectrom. 2021 May; 56(5):e4723. doi: 10.1002/jms.4723"