HEADSPACE TEST PROCEDURE
Spanish translation: procedimiento de análisis por cromatografía de gases (GC) separados en la cabeza de la columna
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| 10:55 Jan 24, 2001 |
| English to Spanish translations [Non-PRO] Science | ||||
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|  Selected response from: Barbara Thomas United States Local time: 15:37 | |||
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| na | procedimiento de análisis por cromatografía de gases (GC) separados en la cabeza de la columna |
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Answers
1 hr
procedimiento de análisis por cromatografía de gases (GC) separados en la cabeza de la columna Explanation: http://members.kr.inter.net/guesu/gs/r_hs-gc/whatishs.html HSGC makes use of the equilibrium between the volatile components of a liquid or solid sample and the surrounding gas phase in a sealed vessel, aliquots of the gas phase being injected into GC for analysis. According to the principle of headspace GC, the sample containing volatile components is placed in a sealed vial and conditioned until the volatile components partition into the vapor space above the sample and reach equilibrium; as a result their concentration in the vapor phase is a function of the concentration in the original mixture. In this method the sample is extracted by inert carrier gas with subsequent GC analysis. http://greenfield.fortunecity.com/mother/455/chromatography/... La apropiada selección del gas portador y de sus valores operacionales son esenciales para obtener los mejores tiempos de análisis, mayor eficiencia y reproducibilidad. La velocidad lineal o la rata de flujo del gas portador se controla ajustando la presión del gas portador en el frente de la columna (llamado comúnmente presión de cabeza de columna). Reference: http://members.kr.inter.net/guesu/gs/r_hs-gc/whatishs.html Reference: http://greenfield.fortunecity.com/mother/455/chromatography/... |
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