胶束介质中基于不同芳香醛与肼和苯肼缩合反应的 H 点标准加入法分光光度同时测定肼和苯肼。

Simultaneous spectrophotometric determination of hydrazine and phenylhydrazine based on their condensation reactions with different aromatic aldehydes in micellar media using H-point standard addition method.

机构信息

Department of Chemistry, Faculty of Sciences, Bu-Ali Sina University, Hamadan 65174, Iran.

出版信息

Talanta. 2004 Feb 27;62(3):559-65. doi: 10.1016/j.talanta.2003.08.023.

DOI:10.1016/j.talanta.2003.08.023

Abstract

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 (SDS). Mixed reagents of p-(dimethylamino)benzaldehyde (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 0.20-10.0mugml(-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.

摘要

H 点标准加入法（HPSAM）被应用于同时测定肼和苯肼。该方法基于在胶束表面活性剂十二烷基硫酸钠（SDS）存在下肼和苯肼的腙形成反应。混合试剂对-（二甲氨基）苯甲醛（DAB）和对硝基苯甲醛（NB）被用作肼和苯肼的选择性显色试剂。肼和苯肼可在 0.020-0.50 和 0.20-10.0μgml（-1）范围内同时测定。结果表明，肼-苯肼的比例可以在 1:500 至 1:10 之间同时进行测定。在工作条件下，该方法成功地应用于几种合成混合物以及血浆和水样中肼和苯肼的同时测定。