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Enriched Background Isotope Study

Fyfe et al. (354) have combined 31P and 13C CP/MAS NMR studies first to identify the polymer-immobilized catalyst (Scheme 4, compound ii) formed from the precursor i by treatment with Pd(PPh3)4 and, second, to monitor the carbonyl insertion reaction using 13C-enriched CO to yield iii. The use of isotopically enriched CO was required so as to record meaningful signals above those emerging from the carbon-rich polymer background. [Pg.329]

At present there is no standard method for measurement of stable isotope enrichment in biological samples The diversity of analytical approaches reflects the varied backgrounds of the investigators involved and the instrumentation which has been available to them Nutrition studies tend to generate many samples and a dedicated mass spectrometer or other facility is advantageous ... [Pg.140]

See other pages where Enriched Background Isotope Study is mentioned: [Pg.236]    [Pg.236]    [Pg.46]    [Pg.277]    [Pg.174]    [Pg.244]    [Pg.43]    [Pg.172]    [Pg.980]    [Pg.3608]    [Pg.4642]    [Pg.347]    [Pg.279]    [Pg.129]    [Pg.392]    [Pg.35]    [Pg.276]    [Pg.469]    [Pg.253]    [Pg.125]    [Pg.337]    [Pg.148]    [Pg.436]    [Pg.100]   


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Isotope enrichment

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Isotopic enrichement

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