The microdetermination of dissolved oxygen in water. V. development of a self‐testing and fully compensating analytical method

Abstract

Abstract An ion‐exchange technique is shown to be effective for removing interference by ferrous ion in the Winkler reaction. A referee method for the determination of dissolved oxygen in water is described incorporating full allowance for interfering substances and tests for bias and precision. The precision of one estimate of dissolved oxygen by the method is ±0·0015 p.p.m.