Determination of nitric oxide by bromate oxidation of the nitrosyl ethylenediaminetetra-acetatoiron(II) complex.
A new spectrophotometric method for nitric oxide is proposed, based on formation of the nitrosyl-ethylenediaminetetra-acetatoiron(II) complex [Fe(II)NO-edta] by absorption of NO in Fe(II)edta solution and spectrophotometric determination of the NO(-)(2) produced by oxidation of the Fe(II)NO-edta complex by potassium bromate. The oxidation is easily performed completely and the absorption efficiency for 10.1-102.0 ppm NO (flow-rate, 100 ml/min) is nearly 100%. The detection limit is about 3 ppm for a sampling absorption time of 30 min.
Uchiyama
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S
Department of Environmental Engineering, Saitama Institute of Technology, 1690 Fusaiji, Okabe, Saitama, Japan.
Muto
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