Abstract
Chromium(III) can be determined in aqueous solution at pH 1.5– 2.5 by electron spin resonance techniques. The analytical range is 2.0 x 10 -1–2.0 x 10 -6 mol dm -3 ; the precision is± 0.3%. The effects of instrumental variables are discussed. Few commonly occurring species up to a concentration of 1.0 x 10 -1 mol dm -3 interfered with the determination. The characteristic g value of 1.98 for chromium(III) suggests that the method may also be used to identify chromium(III).
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