Anionic surfactants : determination by flow injection spectrophotometry. Measurement of trace amounts in tannery effluent without liquid-liquid extraction / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 5 (09-10/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 5 (09-10/2009) . - p. 183-185 Titre : Anionic surfactants : determination by flow injection spectrophotometry. Measurement of trace amounts in tannery effluent without liquid-liquid extraction Type de document : texte imprimé Auteurs : Yu Lingyun, Auteur ; Zhang Xinshen, Auteur ; Yang Yujie, Auteur ; Yu Lan, Auteur ; Sun Jing, Auteur ; Liu Hongyan, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur Année de publication : 2009 Article en page(s) : p. 183-185 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In order to control the pollution by anionic surfactants in water, and detect anionic surfactants on-line, a simple, accurate and sensitive flow injection spectrophotometric method for simultaneous determination of anionic surfactant in water is proposed in this paper. The method is based on the ion associate formed between sodium dodecylbenzenesulfonate and ethyl violet. Lthe absorbance of the complex is measured using an optical detector at 587nm. Chemical factors and FIA variables affecting the system are also discussed. Under the optimal conditions, the linear range of this method was 10.00-3000.00µ 1-1 ; the detection limit was 0.25µg 1-1 ; the relative standard deviation was 0.814%. This method is suitable for automatic and continuous analysis, and successfully applied to simultaneously determine the content of anionic surfactant in tannery effluent. En ligne : https://drive.google.com/file/d/1y4ake9Jl4MEGkVFTIY-2waewlzP6J2-9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6277 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011654	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Biodiesel from waste pigskin oil- a two-step process / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 4 (07-08/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 4 (07-08/2009) . - p. 149-151 Titre : Biodiesel from waste pigskin oil- a two-step process Type de document : texte imprimé Auteurs : Yu Lingyun, Auteur ; Zhao Tiantian, Auteur ; Zhang Xinshen, Auteur ; Zhan Wenxue, Auteur Année de publication : 2009 Article en page(s) : p. 149-151 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper provides a general description of a new continuous biodesel production process, where the transesterification reaction is promoted by two catalysts. The process has been applied on a laboratory scale. The acid value of waste pig oil was greater than 100mgKOH/g oil, but the acid value of biodesel was less than 0.80mgKOH/g oil, and the ester conversion rate was more than 80 percent. The density, residual carbon contents, and acid value of biodesel were met the performance standards of 0# diesel - standard road vehicle oil. En ligne : https://drive.google.com/file/d/1fmvww-E9pZoa3GcyVv0oEz7blWEOWyD-/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=6105 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011502	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Determination of N, N-dimethylformamide (DMF) in waterborne polyurethane by high performance liquid chromatography / Ren Keshuai in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 4 (07-08/2016)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 4 (07-08/2016) . - p. 186-189 Titre : Determination of N, N-dimethylformamide (DMF) in waterborne polyurethane by high performance liquid chromatography Type de document : texte imprimé Auteurs : Ren Keshuai, Auteur ; Sang Jun, Auteur ; Yu Lingyun, Auteur ; Wang Chunhua, Auteur ; Wu Mengru, Auteur ; Lin Wei, Auteur Année de publication : 2016 Article en page(s) : p. 186-189 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie analytique Chromatographie en phase liquide à hautes performances Diméthylformamide Extraction (chimie) Polymères en émulsion Polyuréthanes Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A simple and sensitive method using high performance liquid. chromatography (HPLC) has been developed for the determination of DMF in waterborne polyurethane (WPU) which is used in leather processing. Extraction of DMF is carried out by mechanical oscillation at room temperature for 10 minutes with water as the extraction solvent. Under optimal conditions, the limit of detection is 0.25mg L-1 and the recoveries are 95.2%~102.1%. The proposed method has been successfully applied to the determination of DMF in différent WPU samples. Note de contenu : - EXPERIMENTAL PROCEDURE - APPARATUS : Reagents - Extraction - HPLC conditions - Quantification - RESULTS AND DISCUSSION : The standard curve of DMF - Effect of extraction method - Effect of extraction temperature - Effect of extraction time - Recoveries and precision En ligne : https://drive.google.com/file/d/1KIVP6R5Z9Ojj-C2LsaWFb1wutp9-lcws/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26796 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18265	-	Périodique	Bibliothèque principale	Documentaires	Disponible
18239	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Flow injection spectrophotometric determination of proteins in tannery effluents / Yu Lan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 5 (09-10/2012)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 96, N° 5 (09-10/2012) . - p. 183-188 Titre : Flow injection spectrophotometric determination of proteins in tannery effluents Type de document : texte imprimé Auteurs : Yu Lan, Auteur ; Yu Lingyun, Auteur ; Zhang Xinshen, Auteur Année de publication : 2012 Article en page(s) : p. 183-188 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Eaux usées -- Analyse Eaux usées -- Teneur en protéines Spectrophotométrie Tannage Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : A rapid and sensitive flow injection spectrophotometric method is described for the determination of proteins based on the principle that Aluminum-Alizarin Red S-bovine serum albumin (BSA)-Triton X-100 complex reacts rapidly with proteins to form complexes in pH4.0 weak acid medium, which causes the change of absorption spectra, the maximum absorption peak of the system is located at 500nm. The absorbance difference is linearly related with the concentration of BSA over the range of 5-120mg l-1. The detection limit of the method was 1.42mg l-1. The method was successfully used to determine protein content in leather wastewater samples and the determined results were in good agreement with the spectrophotometry. The relative standard deviation for 11 replicate determinations of the method was 1.12% for 60mg l-1. The standard addition recovery of the method was from 101.29% to 117.32%. Note de contenu : - EXPERIMENTAL PROCEDURES : Reagents and solutions - Apparatus - Analytical procedure - RESULTS AND DISCUSSION : Choice of the detection wavelength - Effect of chemical reaction variables - Effect of flow injection variables - Calibration curve, reproducibility and detection limit En ligne : https://drive.google.com/file/d/1sQ5EC3XUWEbN3sdr7LDKmCP4WsX2_Mk1/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16194 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
14228	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Kinetic spectrophotometric flow injection determination of hyamine cationic surfactants in tannery effluent / Tu Jie in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 93, N° 3 (05-06/2009)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 93, N° 3 (05-06/2009) . - p. 114-117 Titre : Kinetic spectrophotometric flow injection determination of hyamine cationic surfactants in tannery effluent Type de document : texte imprimé Auteurs : Tu Jie, Auteur ; Zhang Xinshen, Auteur ; Dai Shinjun, Auteur ; Yu Lingyun, Auteur ; Tong Ling, Auteur ; Sun Dongmei, Auteur ; Liu Hongyan, Auteur ; Yu Lan, Auteur Année de publication : 2009 Article en page(s) : p. 114-117 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A flow injection analysis coupled with catalytic spectrophotometry is proposed for simple and rapid determination of trace hyamine cationic surfactants (CSs) in tannery effluent and environmental water. The scheme is based on the markedly catalytic reaction of cationic surfactants, i.e., cetyltrimetylammonium bromide (CTMAB) and cetylpyridinium bromide (CPB) which, on oxidation using KIO4 inhighly acidic hydrochloric acid medium discolour Arsenazo (III). Under the optimum conditions, the linear ranges for CTMAB and CPB are 0.1-20mg 1-1, and all relative coefficients of the two Css in different subsections of the linear ranges exceeds 09986 (n=11). The detection limits (3delta) of both the CSs are 0.08mg 1-1, and the recoveries range from 95.7 % to 103.1 %. The relative standard deviation (R. S. D.) is 1.21 % for 2mg 1-1 CTMAB standard solution (n = 21). The developed method, which is suitable for automatic and continuous analysis, can monitor 15 samples per hour. It has been applied successfully to tannery effluent and environmental water samples. En ligne : https://drive.google.com/file/d/1bSNhFCYzjdUi2t9M9eL2YXWic3mnL6IC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5941 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
011443	-	Périodique	Bibliothèque principale	Documentaires	Disponible

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)  

Permalink

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)  

Permalink

On-line determination of sulphide in tannery effluent by flow injection analysis / Yu Lan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 6 (11-12/2012)  

Permalink

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)  

Permalink

Rapid determination of 2-butanone, 2-pyrrolidone and N-methyl pyrrolidone in leather by UPLC / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 4 (07-08/2014)  

Permalink

Rapid determination of aziridine in leathers by headspace-gas chromatography/mass spectrometry (HS-GC-MS) / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 5 (09-10/2017)  

Permalink

Rapid determination of glutaraldehyde in leather by UV spectrophotometry reverse flow injection system / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 98, N° 5 (09-10/2014)  

Permalink

Rapid determination of nitrate in tannery effluent by reverse flow injection analysis / Xiao Kai in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 5 (09-10/2012)  

Permalink

Rapid determination of six aldehydes in leathers by ultra performance liquid chromatography / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 4 (07-08/2013)  

Permalink

Rapid determination of sulphide in tannery wastewater by spectrophotometry / Chen Shujuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 3 (05-06/2011)  

Permalink

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)  

Permalink

Simultaneous determination of chloride and sulfide in tannery effluents by low pressure ion-exclusion chromatography with post-column spectrophotometric detection / Yu Lingyun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 94, N° 5 (09-10/2010)  

Permalink

Simultaneous determination of N-methyl-2-pyrrolidone (NMP) and N-ethyl-2-pyrrolidone (NEP) in leather by gas chromatography-mass spectrometry / Sang Jun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 3 (05-06/2015)  

Permalink

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)  

Permalink

---

1 (1 - 19 / 19)