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Showing papers by "Donald F. H. Wallach published in 1963"

Journal Article•DOI•
Fluorescence techniques in microdetermination of metals in biological materials. ii. an improved method for direct complexometric titration of calcium in small serum samples.

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Donald F. H. Wallach1, Theodore L. Steck1•
Harvard University1
01 Aug 1963-Analytical Biochemistry
TL;DR: A method has been developed for the precise complexometric determination of calcium in 10–100-μl samples of serum without interference from magnesium or phosphate using the fluorescent indicator 2,4-bis at alkaline pH.

26 citations

Journal Article•DOI•
A system for precise gradient-elution chromatography: Application to the chromatography of small amounts of phosphatides on columns of silicic acid

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Donald F. H. Wallach1, Gordon L. Nordby1•
Harvard University1
01 Jan 1963-Biochimica et Biophysica Acta
TL;DR: An apparatus for column chromatography, using precise and predetermined linear or non-linear eluant gradients and constant rates of flow, permitting selection of a wide variety of gradients for chromatographic elution is described.

9 citations