[Distribution pattern of chemical in surface waters as a reflexion of entry pattern--nonvolatile halogenated

E Heinisch1, S Klein, M Mohnke

  • 1Institut für Geographie und Geoökologie der AdW der DDR, Bereich Hydrologie, Berlin.

Zeitschrift Fur Die Gesamte Hygiene Und Ihre Grenzgebiete
|May 1, 1990
PubMed

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Chlorine isotopes exist as 35Cl and 37Cl in a 3:1 ratio, while bromine isotopes exist as 79Br and 81Br in a 1:1 ratio. The mass spectrum of alkyl halides typically produces two distinct molecular ion peaks, the molecular ion peak, [M], and the molecular ion plus two, [M + 2] peak. The relative heights of these two peaks are proportional to the isotopic abundance ratios of the halide. For example, 2‐chloropropane and 1‐bromopropane display two peaks with relative peak heights in a 3:1 and 1:1...