SAMPLE ORIGIN SAMPLE PREP./SIZE PYROL. CONDITIONS TOTAL ION COUNTS
DOWEX 50 WX8, H (cation-exchange resin)
see insert in spectrum; styrene-divinylbenzene copolymer with sulphonic acid functional groups
Fluka AG, Buchs, Switzerland suspension in water; 10 yg standard
REMARKS - Compare with the spectra of other styrene-type polymers (Spectrum H.3, H. 10, H.ll). A styrene monomer peak shows up at m/z 104 but no clear divinyl-benzene monomer (MW 130) is seen. The peaks at m/z 78, 92 and 118 must represent benzene, toluene and phenylpropene. The high peak at m/z 64 (S02+') is directly derived from the sulphonic acid substituents. The presence of a H2S+" peak at m/z 34 and a probable thiobenzene peak at m/z 110 appear to indicate the influence of reductive processes on the sulphonic acid groups, either in the original polymer or during the pyrolysis process.
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