Electron capture negative ion and positive ion chemical ionization mass spectrometry of polychlorinated phenoxyanisoles
摘要:
AbstractSeveral polychlorinated phenoxyphenols with three to nine chlorine atoms were examined as their methyl ethers by electron capture negative ion and positive ion chemical ionization and electron impact mass spectrometry. In chemical ionization studies methane, hydrogen, nitrogen, helium and argon were used as reagent gases. Selected compounds were also examined with deuteriomethane, ammonia and deuterioammonia as reagent gases. Utilization of chemical ionization spectra in conjuction with electron impact spectra provides substantial structural information about these compounds. Chemical ionization spectra provide information about chlorine atom substitution. The position of phenoxy substitution can be established from electron capture negative ion and positive ion spectra.
Preparation of Polychlorinated Phenoxyphenols as Model Compounds of Impurities in Technical Chlorophenol Formulations
作者:Tarmo Humppi
DOI:10.1055/s-1985-31383
日期:——
The synthesis of polychlorinated phenoxyphenols (PCPPs) by three methods is described: condensation of chlorinated guaiacols with chlorobenzene or chlorofluorobenzenes in the presence of base, followed by O-demethylation; reaction of chlorinated diphenyliodonium salts with chlorinated guaiacols, or of 4,4′-dimethoxydiphenyliodonium salts with chlorophenols, followed by O-demethylation; chlorination of lower-chlorinated phenoxyphenols.
Electron capture negative ion and positive ion chemical ionization mass spectrometry of polychlorinated phenoxyanisoles
作者:Jo-Anne B. Campbell、Donald A. Griffin、Max L. Deinzer
DOI:10.1002/oms.1210200210
日期:1985.2
AbstractSeveral polychlorinated phenoxyphenols with three to nine chlorine atoms were examined as their methyl ethers by electron capture negative ion and positive ion chemical ionization and electron impact mass spectrometry. In chemical ionization studies methane, hydrogen, nitrogen, helium and argon were used as reagent gases. Selected compounds were also examined with deuteriomethane, ammonia and deuterioammonia as reagent gases. Utilization of chemical ionization spectra in conjuction with electron impact spectra provides substantial structural information about these compounds. Chemical ionization spectra provide information about chlorine atom substitution. The position of phenoxy substitution can be established from electron capture negative ion and positive ion spectra.