Le chlorure de triphényltétrazolium comme réactif en chimie analytique. VII

Spectrophotometric and fluorometric methods for the determination of hydrazine and its methylated analogues

“…The molar absorption coefficient in water-isopropanol medium (1 : 1) at 485 nm is 1.6 × 10 4 [66]. When this reagent is used for extraction pho tometric determination of hydrazine, lower quantifi cation limit is 0.5 mg in 10 mL of benzene (extractant) for a 0.5 cm cuvette at 490 nm [67]. Relative standard deviation is 2.95% (n = 6).…”

Thin-layer chromatographic determination of hydrazine in aqueous and alcoholic media

“…A survey of the literature showed that hydrazine has been analyzed extensively by a variety of methods including spot tests (1-7), colorimetry (8)(9)(10)(11)(12)(13)(14)(15), titrimetry (16)(17)(18), and chromatography (19)(20)(21). The existing methodology was not applicable to our needs, being either too time consuming, complicated, or lacking the required sensitivity.…”