Characterization of polar polycyclic aromatic compounds in a heavy-duty diesel exhaust particulate by capillary column gas chromatography and high-resolution mass spectrometry

Autor:	Karin E. Markides, Jose M. Bayona, Milton L. Lee
Rok vydání:	1988
Předmět:	Chemical ionization Phthalic anhydride chemistry.chemical_compound Chromatography Chemistry Environmental Chemistry General Chemistry Gas chromatography Mass spectrometry High-performance liquid chromatography Electron ionization Diesel Exhaust Particulate Quinone
Zdroj:	Environmental Science & Technology. 22:1440-1447
ISSN:	1520-5851 0013-936X
Popis:	Polar normal-phase HPLC fractions of a heavy-duty diesel exhaust particulate, a National Bureau of Standards standard reference material 1650, were analyzed by capillary column GC coupled to both low- and high-resolution mass spectrometry (HRMS) using electron impact and negative ion chemical ionization (NICI). Over 80 polycyclic aromatic compounds (PAC), belonging to many different chemical classes (anhydrides, carbox-aldehydes, diazaarenes, cyclic imides, nitrohydroxy-PAC, nitroaza-PAC, nitrodiaza-PAC, nitrolactones, and quinones) were tentatively identified. Ten of them were positively identified by comparison of retention times with authentic standards. Among them, phenazine and phthalic anhydride were positively identified for the first time in diesel exhaust particulates. In addition, cyclic imides and their alkylated derivatives were tentatively identified for the first time. Other novel polar chemical classes of PAC were evidenced by NICI MS using a direct-insertion probe.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53214c874088cfc1ce562e59b6ba6421 https://doi.org/10.1021/es00177a009 Zobrazit plný text záznamu