Spectrophotometric determination of nitrate and nitrite in natural water and sea-water.
Nitrate and nitrite in natural waters are determined spectrophotometrically by passage through an amalgamated zinc reductor at pH 3.4 into iron(III)-Ferrozine solution. Interference by high levels of nitrite is eliminated by treatment with azide. Levels as low as 0.2 mug ml (expressed as nitrogen) can be determined with a precision of +/- 3%.
Bajic
S J
SJ
Department of Chemistry, Loyola University of Chicago, Chicago, IL 60626, U.S.A.
Jaselskis
B
B