期刊
ANALYTICA CHIMICA ACTA
卷 625, 期 1, 页码 41-46出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aca.2008.07.016
关键词
hydrazine; 5-chlorosalicylaldehyde; fluorescence enhancement; diazine
资金
- National Natural Science Foundation of China [20675043]
A facile fluorescent method for the determination of hydrazine in aqueous solution with excellent sensitivity was developed. 5-Chlorosalicylaldehyde (CS), a readily commercially available compound, was applied as the derivatization reagent in this work. Under the addition of CS to hydrazine aqueous solution (ethanol/water/acetic acid= 30/66/4), an intense fluorescence enhancement was observed at 570 nm with a large stokes shift of similar to 170 nm. Upon the optimal condition, the fluorescence intensity linearly increased with the concentration of hydrazine in the range of 0.2 and 9.3 mu M with a correlation coefficient of R-2 = 0.9995 (n = 10) and a detection limit of 0.08 mu M. The R.S.D. was 2.0% (n = 5). Determination of hydrazine in river and drinking water samples was successfully performed. Hydrazine vapor sensing by the proposed method was also reported. (c) 2008 Elsevier B.V. All rights reserved.
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