| Titre : |
Rapid determination of nitrate in tannery effluent by reverse flow injection analysis |
| Type de document : |
texte imprimé |
| Auteurs : |
Xiao Kai, Auteur ; Yu Lingyun, Auteur ; Zhang Xinshen, Auteur ; Yu Lan, Auteur |
| Année de publication : |
2012 |
| Article en page(s) : |
p. 215-219 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Eaux usées -- Analyse
Eaux usées -- Teneur en nitrates
Spectrophotométrie
Tannage
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
In order to control the pollution by nitrate, a simple, accurate and sensitive reverse flow injection analysis (rFIA) spectrophotometric method for determination of nitrate in tannery effluent is proposed in this paper. Firstly, in alkaline medium and with copper ion as catalyst, nitrate is reduced to nitrite by hydrazine sulfate. Then in acid condition, nitrate and sulfanilamide are diazotized. The diazo material is then coupled with N-1-naphthyl ethylenediamine hydrochloride (NEH) to form a red product. The absorbance of the complex compounds is measured at 540nm. Chemical factors ad rFIA variables affecting the system are also discussed. Under the otimal conditions, the linear range of this method was 50-5000µg l-1 ; the detection limit was 7µg l-1 ; the relative standard deviation was 0.844%. This method was suitable for automatic and continuous analysis, and successfully applied to determine the content of nitrate in tannery effluent. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE : Apparatus - Reagents - Procedure
- RESULTS AND DISCUSSION : Detection principle
- ANALYTICAL PROCESS PARAMETERS : Other factors examined |
| En ligne : |
https://drive.google.com/file/d/1SwD9lHJItN9viiIjqPA3Qb30qjtjBbJL/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16207 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 5 (09-10/2012) . - p. 215-219
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