Abstract
The influence of mixtures of iodide and fluoride ions on the spin–spin relaxation time ( T 2) thermal profiles of agarose gels has been investigated. Data show that the temperature shifts in both the ordering and disordering events produced by fluoride/iodide anionic mixtures are additive over all concentration ranges studied. In addition, the relative temperature shifts produced by iodide/fluoride mixtures are independent of agarose concentration. A qualitative model describing the observed ion effects on agarose aggregation behaviour is proposed.
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