caa a22 4500 469129735 CHVBK 20180323133201.0 cr unu---uuuuu 170328e19920301xx s 000 0 eng 10.1007/BF00325125 doi (NATIONALLICENCE)springer-10.1007/BF00325125 A new spectrophotometric method for the determination of hydrazine in environmental samples [Elektronische Daten] [Rachana Kaveeshwar, V. Gupta] Summary: Hydrazine is determined spectrophotometrically by using veratraldehyde (3,4-dimethoxybenzaldehyde) as a new reagent. The reaction is based on the condensation of veratraldehyde with hydrazine in acidic medium. The resulting yellow coloured condensation product has maximum absorption at 410 nm. The colour system obeys Beer's law in the range of 0.065 to 0.3 μg/ml of hydrazine. Molar absorptivity and Sandell's sensitivity are found to be 6.72×104 l mol−1 cm−1 (±100) and 0.0004 μg cm−2, respectively. The method is successfully applied for the determination of hydrazine in polluted water, biological samples, in isoniazide tablets and in air. It is compared with other reported spectrophotometric methods and is found to be of comparable sensitivity. Springer-Verlag, 1992 Kaveeshwar Rachana School of Studies in Chemistry, Ravishankar University, 492 010 MP, Raipur, India aut Gupta V. School of Studies in Chemistry, Ravishankar University, 492 010 MP, Raipur, India aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/3(1992-03-01), 114-117 0937-0633 344:3<114 1992 344 216 https://doi.org/10.1007/BF00325125 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00325125 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kaveeshwar Rachana School of Studies in Chemistry, Ravishankar University, 492 010 MP, Raipur, India aut NATIONALLICENCE 700 1- Gupta V. School of Studies in Chemistry, Ravishankar University, 492 010 MP, Raipur, India aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 344/3(1992-03-01), 114-117 0937-0633 344:3<114 1992 344 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer