Determination of methylthio-substituted polychlorinated aromatic compounds using gas chromatography/mass spectrometry
The preparation of small quantities of methylthio-substituted polychlorinated benzenes, biphenyls, certain dibenzo-p -dioxins, and dibenzofurans and their analysis by gas chromatography/mass spectrometry (GC/MS) using different ionization techniques (EI, CI, and NCI) is described. The novel synthesis method involved ..gamma.. irradiation of the polychlorinated parent compounds in dimethyl disulfide (DMDS) and results in displacement of a Cl substituent by a CH/sub 3/S group. This fast and simple procedure leads to small but, for GC/MS analysis, sufficient quantities of these potential environmental and biological metabolites. Marked differences were observed in the EI and NCI mass spectra among various CH/sub 3/S-derivatized PCB isomers (MeS-PCBs). The formation of M/sup -/-CH/sub 3/ ions (sulfide anions) is characteristic in NCI for most of these compounds. 18 references, 7 figures, 3 tables.
- Research Organization:
- Swiss Federal Research Station, Waedenswil
- OSTI ID:
- 6307890
- Journal Information:
- Anal. Chem.; (United States), Vol. 57:14
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
54 ENVIRONMENTAL SCIENCES
BENZOFURANS
GAS CHROMATOGRAPHY
MASS SPECTROSCOPY
CHLORINATED AROMATIC HYDROCARBONS
RADIOLYSIS
DIOXIN
THIOLS
CARCINOGENS
EXPERIMENTAL DATA
GAMMA RADIATION
QUANTITATIVE CHEMICAL ANALYSIS
TRACE AMOUNTS
AROMATICS
CHEMICAL ANALYSIS
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMATOGRAPHY
DATA
DECOMPOSITION
ELECTROMAGNETIC RADIATION
FURANS
HALOGENATED AROMATIC HYDROCARBONS
HETEROCYCLIC COMPOUNDS
INFORMATION
IONIZING RADIATIONS
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
SEPARATION PROCESSES
SPECTROSCOPY
400102* - Chemical & Spectral Procedures
400104 - Spectral Procedures- (-1987)
520200 - Environment
Aquatic- Chemicals Monitoring & Transport- (-1989)
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)