Determination of chloride and sulphate ions in leather pickling liquor by low-pressure ion chromatography / Bo Li in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 1 (01-02/2004)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 88, N° 1 (01-02/2004) . - p. 6-9 Titre : Determination of chloride and sulphate ions in leather pickling liquor by low-pressure ion chromatography Type de document : texte imprimé Auteurs : Bo Li, Auteur ; Fan Zhang, Auteur ; Zhang Xinshen, Auteur Année de publication : 2004 Article en page(s) : p. 6-9 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse quantitative (chimie) Chromatographie Eaux usées -- Analyse Ions chlorure Picklage Le picklage consiste à faire absorber à la peau en tripe une quantité importante d'acide, en présence de sel neutre (NaCl) pour réprimer le gonflement que provoquerait l'acidité du milieu. Statistique Sulfates Le sulfate est le sel de l'acide sulfurique H2SO4. La formule de l'ion sulfate est SO42-. Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The deleterious effects on the quality of soil and ground waters of electrolytes discharged as a result of salts used by the tanning industry is of concern now more than ever. The electrolyte is usually in the form of chloride and sulphate and thus it is necessary to determination chloride ion and sulphate ion in tanning effluents. The determination of chloride ion and sulphate ion in leather pickling liquor is important to determine the salt’s contribution to the total salt concentration of the sewage for each process. The aim of this work is to apply LPIC (without using a suppressor column) to the quantitative determination of chloride ion and sulphate ion in pickle liquor. Tests of precision, recovery and linear range were also conducted to evaluate the above method. The results show that the coefficients of variation are less than 4.77% or 3.76% with recoveries of 99.95% and 102.31% for chloride ion and sulphate ion respectively. Two calibration curves were obtained over the concentration range of 10 to 30 mg/L for chloride and 30 to 300 mg/L for sulphate. The detection limits of the method developed for chloride ion and sulphate ion are 0.144 and 2.853 mg/L respectively. LPIC performed without a suppressor column is shown to be suitable as a method for quantitative determination of chloride ion and sulphate ion in leather pickling liquor. Note de contenu : - EXPERIMENTAL PROCEDURE : Apparatus - Reagents and solutions - Sample preparation - RESULTS AND DISCUSSION : Choice of column - Choice of eluent - Eluent concentration - Effect of pH - Linearity tests - Precision tests - Detection limit - Analysis of real samples - Table 1 : Chromatographic conditions for the analysis of inorganic anions - Table 2 : Result of the statistical treatment performed on pairs of LPIC data - Table 3 : Results of precision tests - Table 4 : Determination of chloride and sulphate concentration in leather pickling liquor En ligne : https://drive.google.com/file/d/1UboMr69zI0I7MlSoXPCZw8XWfzWn0r-n/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39648 [article]

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