Clusters for Up to Four Chlorine or Bromine Atoms

Isotopic Clusters for Up to Four Chlorine or Bromine Atoms Number of Bromine Atoms 1 2 3 

When evaluating isotope peak intensities, the first step is to compare the intensity of the (P + 2) peak to the relative abundances of the heavy isotopes of bromine, chlorine, sulfur, and silicon. If there is a fairly close fit (with one or more 

For complex compositions, isotope peak calculations are best performed using any of the mass spectrometry tools available in most software or on the Internet. 

What isotope peak intensities are expected for the molecular ions of aniline (CgHyN), acetophenone (CjHjO), ethyl iodide (C2H5I), and ethylamine (C2H7N)  

Two serious complications arise in the determination of elemental compositions from isotope peak intensities in this manner. 

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