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On-line determination of nitrite in tannery effluent by flow injection analysis / Li Hui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 5 (09-10/2012)
[article]
Titre : On-line determination of nitrite in tannery effluent by flow injection analysis Type de document : texte imprimé Auteurs : Li Hui, Auteur ; Zhang Xinshen, Auteur ; Yu Lingyun, Auteur ; Chen Shujuan, Auteur Année de publication : 2012 Article en page(s) : p. 195-199 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eaux usées -- Analyse
Eaux usées -- Teneur en nitrites
Spectrophotométrie
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : In order to control the pollution by nitrite, a direct spectrophotometric flow injection method for the determination of nitrite in tannery effluents has been developed. The method is based on the diazotized intramolecular coupling of a 4-amino-5hydroxynaphthalene-2,7-disulfonic acid monosodium salt hydrate (AHNDMS) by the addition of nitrite in a phosphate buffer solution of pH7.5 and the increase in absorbance of the purple complex is monitored at 550nm. Chemical factors and FIA variables affecting the system are also discussed. Under the optimal conditions, the linear range of this method was 20-1500µg l-1 ; the detection limit was 0.15µg l-1 ; the relative standard deviation was 0.67 % (n=11, 450µg l-1). This method was suitable for automatic and continuous analysis, and successfully applied to determine the content of nitrite in tannery effluent. Note de contenu : - EXPERIMENTAL PROCEDURE : Apparatus - Reagents - Procedure
- RESULTS AND DISCUSSION : Detection wavelength - Optimization of flow injection variables - Effect of chemical reaction variables - Analytical figures of meritEn ligne : https://drive.google.com/file/d/14r-HRCBvrd6xQJ2BYkjkdATkz2GBFyi-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16200
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 5 (09-10/2012) . - p. 195-199[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14228 - Périodique Bibliothèque principale Documentaires Disponible On-line determination of nitrite in tannery effluent by reverse reference flow injection / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 3 (05-06/2010)
[article]
Titre : On-line determination of nitrite in tannery effluent by reverse reference flow injection Type de document : texte imprimé Auteurs : Yu Lingyun, Auteur ; Zhang Xinshen, Auteur ; Xiao Kai, Auteur ; Yu Lan, Auteur ; Cao Fengmei, Auteur ; Zhao Huanhuan, Auteur ; Sun Jing, Auteur ; Yang Yujie, Auteur Année de publication : 2010 Article en page(s) : p. 124-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Industrie
Eaux usées -- Analyse
Eaux usées -- Teneur en nitrites
TannageIndex. décimale : 628.5 Pollution et hygiène industrielle Résumé : In order to control the pollution of nitrite, a sample, accurate and sensitive reverse reference flow injection analysis (ffRIA) spectrophotometric method for determination of nitrite in tannery effluent is proposed. In acid conditions, nitrite with sulfanilamide is diazotized, and then the diazo material is coupled with N-1-naphthyl ethylenediamine hydrochloride (NEH) to form a red product. The absorbance of the complex compound is measured at 540nm. Chemical factors and rrFIA variables affecting the system are also discussed. Under the optimal conditions, the linear range of this method was 0-50.0 g l-1 ; the detection limit was 0.03 g 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 nitrite in tannery effluent. En ligne : https://drive.google.com/file/d/1IjQ-QNO09ZI37wg98Nbq6ciy4dyMLAF-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9627
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 94, N° 3 (05-06/2010) . - p. 124-128[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012255 - Périodique Bibliothèque principale Documentaires Disponible