ISBN: 9783330061668 - water analysis of hazardous compounds: development of a rapid and simple analytical method for determining chlorophenols in waters by sbse-tdu-gc/ms (6 risultati)

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Taschenbuch. Condizione: Neu. Water Analysis of Hazardous Compounds | Development of a rapid and simple analytical method for determining chlorophenols in waters by SBSE-TDU-GC/MS | Yun S. Kim | Taschenbuch | 60 S. | Englisch | 2017 | LAP LAMBERT Academic Publishing | EAN 9783330061668 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -A rapid, accurate, and simple analytical method for the determination of trace amounts of chlorinated phenols such as chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, and pentachlorophenol in water using stir bar sorptive extraction (SBSE)-thermal desorption unit (TDU)-gas chromatography-mass spectrometry (GC-MS) with in situ derivatization is described. The optimization of SBSE conditions such as, extraction time, effect of salt concentration, and stirring speed is investigated. The detection and quantification limits of the chlorophenols in water ranged from 0.1 to 0.6 and from 0.4 to 1.8 ng/L, respectively. The average recoveries and precision ranged from 98% to 109% and from 2.0% to 6.6%, respectively. The level of detection observed based on hazard quotient (HQ) was remarkably improved over that achieved with the conventional method. The value of HQ ranged from 0.00002 to 0.001 for each chlorophenols. Moreover, sufficient sensitivity of detection limits and quantitative limits for chlorophenols in water, drinking and river samples taken from Korea, was estimated based on the probabilistic risk assessment in this work. 60 pp. Englisch. …

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - A rapid, accurate, and simple analytical method for the determination of trace amounts of chlorinated phenols such as chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, and pentachlorophenol in water using stir bar sorptive extraction (SBSE)-thermal desorption unit (TDU)-gas chromatography-mass spectrometry (GC-MS) with in situ derivatization is described. The optimization of SBSE conditions such as, extraction time, effect of salt concentration, and stirring speed is investigated. The detection and quantification limits of the chlorophenols in water ranged from 0.1 to 0.6 and from 0.4 to 1.8 ng/L, respectively. The average recoveries and precision ranged from 98% to 109% and from 2.0% to 6.6%, respectively. The level of detection observed based on hazard quotient (HQ) was remarkably improved over that achieved with the conventional method. The value of HQ ranged from 0.00002 to 0.001 for each chlorophenols. Moreover, sufficient sensitivity of detection limits and quantitative limits for chlorophenols in water, drinking and river samples taken from Korea, was estimated based on the probabilistic risk assessment in this work.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Kim Yun S.Yun S. Kim : a principal researcher, who is working at the K-water Institute, Korea. He got a Ph.D. for Environment Analysis Chemistry from Nihon university, Japan. His work engaged with development of analytical method for. …

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -A rapid, accurate, and simple analytical method for the determination of trace amounts of chlorinated phenols such as chlorophenol, 2,4-dichlorophenol, 2,4,6-trichlorophenol, 2,3,4,6-tetrachlorophenol, and pentachlorophenol in water using stir bar sorptive extraction (SBSE)-thermal desorption unit (TDU)-gas chromatography-mass spectrometry (GC-MS) with in situ derivatization is described. The optimization of SBSE conditions such as, extraction time, effect of salt concentration, and stirring speed is investigated. The detection and quantification limits of the chlorophenols in water ranged from 0.1 to 0.6 and from 0.4 to 1.8 ng/L, respectively. The average recoveries and precision ranged from 98% to 109% and from 2.0% to 6.6%, respectively. The level of detection observed based on hazard quotient (HQ) was remarkably improved over that achieved with the conventional method. The value of HQ ranged from 0.00002 to 0.001 for each chlorophenols. Moreover, sufficient sensitivity of detection limits and quantitative limits for chlorophenols in water, drinking and river samples taken from Korea, was estimated based on the probabilistic risk assessment in this work.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 60 pp. Englisch.…