Extraction-chromatographic determination of hydrazine in natural water as a 5,7-Dinitrobenzofurazan derivative using diode-array detection
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Abstract
The conditions for the derivatization of hydrazine withp-dimethylaminobenzaldehyde and 4-chloro-5,7-dinitrobenzofurazan, extraction preconcentration of derivatives from natural water, and HPLC determination of the toxicant with diode-array detection were studied. The 5,7-dinitrobenzofurazan derivative was quantitatively extracted from water with isoamyl alcohol and a mixture of isoamyl alcohol with methylene chloride at pH 3–4. A procedure was developed for the extraction-chromatographic determination of hydrazine in water with cmin = 0.05 Μg/L and the analytical range 0.12-60 Μg/L. The concentration of hydrazine in lake Kaban water was determined.
Keywords
Hydrazine Isoamyl Alcohol Chromatographic Determination Hydrazine Derivative Amyl Alcohol
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