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We have applied electrospray ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) to analyze the pyridine soluble fraction of a distillation resid and a further processed liquid product in a coal liquefaction process. The inherent high resolving power (m/Δm 50% >300,000, in which Δm 50% is full mass spectral peak width at half-maximum peak height)...
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