Journal
TALANTA
Volume 62, Issue 3, Pages 559-565Publisher
ELSEVIER
DOI: 10.1016/j.talanta.2003.08.023
Keywords
hydrazine; phenylhydrazine; simultaneous determination; HPSAM
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H-point standard addition method (HPSAM) was applied to the simultaneous determination of hydrazine and phenylhydrazine. The method is based on the hydrazone formation reactions of hydrazine and phenylhydrazine in the presence of micellar sodium dodecyl sulfate (SIDS). Mixed reagents of p-(dimethylamino)benzaidehyde (DAB) and p-nitrobenzaldehyde (NB) was used as selective chromogenic reagents for hydrazine and phenylhydrazine. Hydrazine and phenylhydrazine can be determined simultaneously in the range 0.020-0.50 and 0.20-10.0 mug ml(-1), respectively. The results allowed that simultaneous determination could be performed with the ratio 1:500 to 1: 10 hydrazine-phenylhydrazine. Under working conditions, the proposed method was successfully applied to the simultaneous determination of hydrazine and phenylhydrazine in several synthetic mixtures and plasma and water samples. (C) 2003 Elsevier B.V. All rights reserved.
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