Direct spectrophotometric determination of formaldehyde in leather wastewater by flow injection analysis with chromotropic acid / Zou Yuquan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 4 (07-08/2007)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 4 (07-08/2007) . - p. 142-144 Titre : Direct spectrophotometric determination of formaldehyde in leather wastewater by flow injection analysis with chromotropic acid Type de document : texte imprimé Auteurs : Zou Yuquan, Auteur ; Zhang Xinshen, Auteur ; Long Fucai, Auteur ; Yuan Dong, Auteur ; Tu Jie, Auteur Année de publication : 2007 Article en page(s) : p. 142-144 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie) Chromotropique, Acide Eaux usées -- Analyse Eaux usées -- Teneur en formaldéhyde Spectrophotométrie Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A sensitive and relatively interference-free spectrometric method for determination of formaldehyde in leather wastewater is described. The method is based on the combination of chromotropic acid with formaldehyde under acidic conditions with heating. The absorbance of the complex is measured spectrophotometrically at 390nm. Chemical factors and FIA variables affecting the system are also discussed. The linearity concentration range of the calculation curve was from 0.05 to 1000mg l-1 of standard solutions. The relative standard deviation was 0.42% (n = 11) obtained by injecting 200∝g l-1 standard formaldehyde solution. The detection limit was 0.003mg l-1 calculated from three times the average background noise. The proposed method was successfully applied to determine formaldehyde in varied samples of leather wastewater. Note de contenu : - MATERIALS AND METHODS : Apparatus - Reagents - Sample preparation - Analytical procedure - RESULTS AND DISCUSSION : Effect of chemical factors - Effect of the FIA parameters - Interference study - Application of the method - Table 1 : Determination of formaldehyde in leather wastewaters En ligne : https://drive.google.com/file/d/1eJSs1CY9uhOt8G8hbB9XUECn9lnvlju-/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39018 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

---

1 (1 - 1 / 1)