= Graham W. Burton
{c}
= G. W. Burton
{c}
{synonym}
\b[G. W. Burton] is first author of the 1983 study with <A. Joyce> and <K. U. Ingold> on lipid-soluble chain-breaking activity in plasma and erythrocyte membrane preparations. The investigators compared that activity with <vitamin E> determined by <high-performance liquid chromatography>.<Is vitamin E the only lipid-soluble, chain-breaking antioxidant in human blood plasma and erythrocyte membranes? by G. W. Burton and others>[Byline and Abstract, inhibited-autoxidation and chromatographic comparison]{ref}
The work illustrates why both the measurement and its normalization matter. An <antioxidant> concentration per volume and its amount relative to available <lipid> answer different questions. The paper explicitly examined vitamin-E/lipid ratios in the sampled materials.<Is vitamin E the only lipid-soluble, chain-breaking antioxidant in human blood plasma and erythrocyte membranes? by G. W. Burton and others>[Abstract, normalization to plasma and membrane lipids]{ref}
For an original example, sample A contains $0.020\,\mathrm{mmol\,L^{-1}}$ of a donor and $5.0\,\mathrm{mmol\,L^{-1}}$ of a specified lipid reference. Its ratio is $0.0040$. Sample B contains $0.030\,\mathrm{mmol\,L^{-1}}$ donor and $10.0\,\mathrm{mmol\,L^{-1}}$ lipid reference, giving $0.0030$. The donor concentration is 50 percent higher in B, yet the donor-to-lipid ratio is 25 percent lower.
Those statements are compatible because their denominators differ. Neither ratio alone predicts the rate of <lipid peroxidation>: local <antioxidant reaction competition>, chemical accessibility and other chain reactions also matter. The example uses a stipulated common lipid-amount convention and does not assign molecular concentrations to the paper's actual samples or infer a clinical benefit.
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