Heparin and low molecular mass heparin (LMMH) consists of complex mixtures of sulphated linear oligosaccharides that are difficult to analyse. An on-line size exclusion chromatographic/electrospray ionization (ESI) mass spectrometric method that allows the determination of more than 60 components in an LMMH preparation is presented. The experimental setup includes on-line cation exchange in order to prevent massive adducting in the ESI interface.
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Henriksen et al. (2004) studied this question.
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