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A contour plot (Figure 9) deduced from the RPLC/APCI-TOF separation was produced by means of a method described in detail elsewhere. This 2D plot reports the ion intensities of the various oligomers as a function of the number of methylsiloxane and dimethylsiloxane units. Only ions with m/z > 600 Da were taken into account in order to avoid the contribution of low-mass ions coming from in-source decompositions. The estimation of the average polymerization degrees gave for each sort of repeat unit: DPn (DMS) ) 14.9, DPn (MS) ) 5.4.


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Originally posted by chemin at 2008-5-13 23:43:
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[ Last edited by leiopixie on 2008-5-17 at 10:40 ]
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