Atmospheric pressure chemical ionization of alkanes, alkenes, and cycloalkanes
نویسندگان
چکیده
منابع مشابه
Conformations of Alkanes and Cycloalkanes
Hydrogen peroxide is formed in the cells of plants and animals but is toxic to them. Consequently, living systems have developed mechanisms to rid themselves of hydrogen peroxide, usually by enzyme-catalyzed reduction to water. An understanding of how reactions take place, be they reactions in living systems or reactions in test tubes, begins with a thorough knowledge of the structure of the re...
متن کامل2: Alkanes and Cycloalkanes Alkanes Alkane Systematic Nomenclature Cycloalkanes Conformations of Alkanes Conformations of Cycloalkanes Conformations of Alkylcyclohexanes
Preview You learned in the Chapter 1 that all organic molecules have carbon skeletons. These carbon skeletons show great diversity in the ways that C atoms bond to each other, and in their three-dimensional shapes. Alkanes and cycloalkanes consist entirely of carbon skeletons bonded to H atoms since they have no functional groups. As a result, they serve as a basis for understanding the structu...
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The efficiencies of charge exchange reaction in dopant-assisted atmospheric pressure chemical ionization (DA-APCI) and dopant-assisted atmospheric pressure photoionization (DA-APPI) mass spectrometry (MS) were compared by flow injection analysis. Fourteen individual compounds and a commercial mixture of 16 polycyclic aromatic hydrocarbons were chosen as model analytes to cover a wide range of p...
متن کاملAtmospheric pressure chemical ionization source. 1. Ionization of compounds in the gas phase.
A novel chemical ionization source for organic mass spectrometry is introduced. This new source uses a glow discharge in the flowing afterglow mode for the generation of excited species and ions. The direct-current gas discharge is operated in helium at atmospheric pressure; typical operating voltages and currents are around 500 V and 25 mA, respectively. The species generated by this atmospher...
متن کاملAtmospheric pressure chemical ionization mass spectrometry of pyridine and isoprene: potential breath exposure and disease biomarkers.
Volatile organic compounds (VOCs) in exhaled human breath can serve as potential disease-specific and exposure biomarkers and therefore can reveal information about a subject's health and environment. Pyridine, a VOC marker for exposure to tobacco smoke, and isoprene, a liver disease biomarker, were studied using atmospheric pressure chemical ionization mass spectrometry (APCI-MS). While both m...
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ژورنال
عنوان ژورنال: Journal of the American Society for Mass Spectrometry
سال: 1994
ISSN: 1044-0305,1879-1123
DOI: 10.1016/1044-0305(94)85031-3