Abstract
A method is described for chemical determination of oxygen and sulfide in the same water sample. Sulfide is first separated by precipitation with zinc hydroxide, oxygen then determined by the Winkler technique in the clear supernatant. The mutual interference between the oxygen and the sulfide determinations is <1–2%. The method has proven useful for field applications: as an example, the diurnal variation in oxygen and sulfide of a shallow lagoon is presented.
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