On-line flow injection spectrophotometric determination of chloride ion in tannery effluent / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 2 (03-04/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 2 (03-04/2009) . - p. 46-50 Titre : On-line flow injection spectrophotometric determination of chloride ion in tannery effluent Type de document : texte imprimé Auteurs : Yu Lingyun, Auteur ; Tu Jie, Auteur ; Xiao Kai, Auteur ; Dai Shijun, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur ; Zhang Xinshen, Auteur Année de publication : 2009 Article en page(s) : p. 46-50 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The chloride ion (Cl-) is very important to both human and animal health, and directly impacts on the natural environment. This paper proposes a simple, accurate, sensitive and selective flow injection catalytic kinetic spectrophotometric method for the rapid determination of chloride ion in tannery effluent. in acidic media and with heat, the reaction of indigo carmine and potassium bromate is catalysed by the chloride ion. The absorbance of this reaction solution was recorded at 610nm. Chemical factors and FIA variables affecting the system were also discussed. The linear concentration range of the calibration curve was from 0.2-420mg L-1 of standard solutions. The relative standard deviation was 0.88 % for 28.0mg l-1 chloride ion( n=9), and the detection limit was à.009mg l-1 calculated from three times the average background noise. This method, which is suitable for automatic continuous analysis, has been successfully applied to the determination of chloride ion in tannery effluent. En ligne : https://drive.google.com/file/d/1t7fxY4E5Cd-uVKjySpObOeZ5DgtZ5O6F/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5091 [article]

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Reverse reference flow injection spectrophotometry for the determination of chromium(VI) extracted from leather by artificial perspiration / Li Wang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 6 (11-12/2010)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 94, N° 6 (11-12/2010) . - p. 262-267 Titre : Reverse reference flow injection spectrophotometry for the determination of chromium(VI) extracted from leather by artificial perspiration Type de document : texte imprimé Auteurs : Li Wang, Auteur ; Zhang Xinshen, Auteur ; Li Hui, Auteur ; Dai Shijun, Auteur ; Sun Dongmei, Auteur ; Sun Jing, Auteur ; Yang Yujie, Auteur ; Tong Ling, Auteur Année de publication : 2010 Article en page(s) : p. 262-267 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir -- Teneur en chrome hexavalent Cuirs et peaux -- Analyse Extraction (chimie) Spectrophotométrie Transpiration Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Reverse reference flow injection spectrophotometry for the determination of chromium(VI) extracted from leather by artificial perspiration --- Reverse reference flow injection analysis (r-FIA) is proposed to determine chromium(VI) extracted from finished leather by artificial perspiration. The extraction of chromium(VI in leather and the decolouration of leather extract were investigated.Under the optimal conditions, the linear range of this method was 1-50%g/l ; the detection limit was 0.62%g/l ; the relative standard deviation (n=10) for 10µg/l chromium(VI) was 1,74 %. For leather samples, the corresponding linear range of this method was 0,5-25mg/kg. This method is suitable for automatic and continuous analysis and gives satisfactory results when applied to the determination of chromium(VI) extracted from finished leather by artificial perspiration. En ligne : https://drive.google.com/file/d/1QMTaeWleX8DyQc9tDGKQdgIU123LW46u/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10813 [article]

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Simultaneous assay of trace Cr(VI) and total chromium in tannery effluent. Using flow injection spectrophotometry with Ce(IV) as oxidant / Dai Shijun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 6 (11-12/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 6 (11-12/2009) . - p. 245-249 Titre : Simultaneous assay of trace Cr(VI) and total chromium in tannery effluent. Using flow injection spectrophotometry with Ce(IV) as oxidant Type de document : texte imprimé Auteurs : Dai Shijun, Auteur ; Zhang Xinshen, Auteur ; Yu Lingyun, Auteur ; Xiao Kai, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur ; Tu Jie, Auteur Année de publication : 2009 Article en page(s) : p. 245-249 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A rapid and sensitive method is described for flow injection spectrophotometric determination of trace Cr(VI) and total chromium in tannery effluent. The method is based upon the classical reaction of Cr(VI) with diphenylcarbazide (DPC) to form a water-soluble complex (lambda max=540nm). Cr(III) reacts with DPC only after its on-line oxidation to Cr(VI) by Ce(SO4). Under the optimized conditions, the calibration curves were linear over the range 5-100µg 1-1 and 2à-200 µg 1-1 for Cr(VI) and total chromium, respectively, while the precision close to the quantification limit was satisfactory in both cases (Sr=0.49 % for Cr(VI) and 0.94 % for total chromium (n=10) at the same level, 50µg 1-1, respectively). the application of the method to the analysis of tannery effluent gave accurate results based on recovery studies (98.7-103.3 %). Analytical results of total chromium tannery effluent were in good agreement with that of reference method. En ligne : https://drive.google.com/file/d/19oe3FnTy-paoZE_mXtezaJPqU4Sat55U/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7347 [article]

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Simultaneous online visible detection of sulphide and chloride in tannery effluent by combination of fia and low pressure ion chromatography / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 6 (11-12/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 6 (11-12/2009) . - p. 250-254 Titre : Simultaneous online visible detection of sulphide and chloride in tannery effluent by combination of fia and low pressure ion chromatography Type de document : texte imprimé Auteurs : Yu Lingyun, Auteur ; Zhang Xinshen, Auteur ; Dai Shijun, Auteur ; Sun Jing, Auteur ; Yang Yujie, Auteur ; Yu Lan, Auteur ; Xiao Kai, Auteur Année de publication : 2009 Article en page(s) : p. 250-254 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A simple, accurate, sensitive and selective combination of flow injection and low pressure ion chromatography catalytic kinetic spectrophotometric method for simultaneous determination of sulphide and chloride in tannery effluent is proposed in this paper. Firstly, sulphide and chloride are separated by low pressure ion chromatography, and then they respectively accelerate the reaction of indigo carmine and potassium bromate in acidic media with heating. The reaction solutions, the results of sulphide and chloride are separately as follows : the calibration graph was linear in the range of 0.15-5.00mgl-1 and 0.50-33.00mgl-1 ; the detection limit was 0.015mgl-1 and 0.0042mgl-1 ; the relative standard deviation was 2.26 % and 2.45 % (n=10) ; the retention time was 2.0 minutes and 7.2 minutes. This method is suitable for automatic and continuous analysis, and successfully applied to simultaneously determine the contents of sulphide and chloride in tannery effluent. En ligne : https://drive.google.com/file/d/1kvF1A3x156MQeW59f-bG_Nd3lej0h3KW/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7348 [article]

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