Solid-phase spectrophotometric determination of trace amounts of hydrazine at sub-ng ml −1 level

A very sensitive method for the determination of trace amounts of hydrazine by Solid-phase spectrophotometry has been developed. The method is based on the fixation of an aldazine derivative of hydrazine on a cation-exchange resin and the resin phase absorbance being measured directly. It allows the...

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Bibliographic Details
Published in:Analytica chimica acta 1997-10, Vol.353 (1), p.115-122
Main Authors: Ortega-Barrales, P., Molina-Díaz, A., Pascual-Reguera, M.I., Capitán-Vallvey, L.F.
Format: Article
Language:English
Subjects:
Boiler feed and natural waters
Hydrazine
Isoniazid
Solid phase spectrophotometry
Urine
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Summary:A very sensitive method for the determination of trace amounts of hydrazine by Solid-phase spectrophotometry has been developed. The method is based on the fixation of an aldazine derivative of hydrazine on a cation-exchange resin and the resin phase absorbance being measured directly. It allows the determination of hydrazine in the range 0.08–1.20 ng ml −1 (with a RSD of 3.4% and an apparent molar absorptivity of 2.7 × 10 8 1 mol −1 cm −1). The method was applied to the determination of hydrazine in boiler feed and natural water samples, urine and isoniazid tablets.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(97)00386-3