Polystyrene

see insert in spectrum; MW = 270,000

Natl. Bureau of Standards (SRM 706), Washington, USA

solution in acetone; 2 pg standard

3 X 104

remarks - This simple spectrum shows a dominant styrene monomer peak at m/z 104 as well as relatively minor benzene (m/z 78) and phenylpropene (m/z 118) peaks. A dimer peak appearing at m/z 208 is outside the mass range shown here.

120 140 m/z

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