Dechlorination of polychlorinated biphenyls in electron-capture negative-ion chemical ionization mass spectrometry

Autor:	Orval A. Mamer, François Lépine, Mark L. J. Reimer, Sylvain Milot
Rok vydání:	1994
Předmět:	Chemical ionization Electron capture Chemistry Chlorine atom Analytical chemistry Hydrogen atom Photochemistry Biochemistry Ion Electrophile polycyclic compounds Mass spectrum Molecular Medicine Reaction path Instrumentation Spectroscopy
Zdroj:	Organic Mass Spectrometry. 29:133-142
ISSN:	1096-9888 0030-493X
DOI:	10.1002/oms.1210290304
Popis:	The electron-capture negative-ion chemical ionization mass spectra of 36 35 Cl mono- and di-labelled penta- and hexachlorobiphenyls were studied. Under the conditions of the analyses, the dechlorination of these congeners probably proceeds through electrophilic hydrogen atom attachment followed by rapid loss of the chlorine atom at the same position. These dechlorination reactions occur regioselectively. When present, ortho-chlorines are lost preferentially to meta- and para-chlorines. The extent of the dechlorination reaction, as seen by the relative abundance of the [MH − Cl] − ions, decreases with increasing number of ortho-chlorines
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e2914e4ddbad27e419ef6e627aa62e5a https://doi.org/10.1002/oms.1210290304 Zobrazit plný text záznamu Plný text