Use of Synthetic Resins in the Estimation of Trace Elements

Methods for geochemical analysis

“…Ion exchange was used extensively before the 1960's when quantification of elements relied on single-element detection by colorimetry or potentiometry. Although labor intensive and slow, ion exchange was one of the few methods available to isolate certain analytes from interfering elements (Kunin, 1949;Plummer and others, 1959;Riches, 1946) as these measurement methods required. With the introduction of FAAS, the need for ion-exchange methods declined, as discussed in the "Introduction."…”

Flame-photometric determination of strontium in natural water

“…Concentration of trace elements in solution by ion-exchange chromatography has been described by Cranston and Thompson (1956), Riches (1946Riches ( , 1947, and Egner and others (1949). Tom kins and others (1947), Stanley and Kruger (1956), and Milton and Grummitt (1957) have described methods for the separation of strontium from the alkali metals and the other alkaline-earth metals.…”

An Introduction to Polarographic Methods and Their Application to the Analysis of Plant Material

“…Catalytic currents are proportional, not to m^t*, but to m^t^, since they depend on the maximal surface area of the mercury drop (Muller & Davis, 1945). The special capillary with a constriction above the orifice (Riches, 19466) may prove useful in this type of work.…”