DEVICE INTEGRAL WITH MULTIPLE DEFLECTIONS FOR THE RECOVERY OF ORGANIC COMPOUNDS DUE TO THE EVAPORATION OF ORGANIC SOLVENTS BY STEAM
The present invention refers to a device used along with any other extraction system actuated by organic solvents, which volumes are lower than 15 mL per sample, so that being preferably used along with miniature or microscale extraction systems. The system includes a container with a cap (concentra...
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Sprache: | eng ; spa |
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Zusammenfassung: | The present invention refers to a device used along with any other extraction system actuated by organic solvents, which volumes are lower than 15 mL per sample, so that being preferably used along with miniature or microscale extraction systems. The system includes a container with a cap (concentration vial) for the initial sample, a tube for supplying gas, preferably nitrogen and a capillary with a plurality of deflections lengthwise one half of the tube; the gas is brought into contact with the solution and the solvent being dragged to the capillary, which is located in such a manner that the straight portion of the tube remains within the vial and the deflections outside the same. The organic compounds dragged by the gas are fixed to the deflections of the tube, thus condensing those compounds with a steam pressure lower than that of the solvent. The device has not a process for recovering the organic steam, but it may be integrated as an accessory.
La presente invención se refiere a un dispositivo para ser usado en combinación con cualquier sistema de extracción por disolventes orgánicos, cuyos volúmenes sean menores a 15 mL por muestra, por lo que se empleará preferentemente en combinación con sistemas de extracción miniaturizados o a microescala. El sistema se compone de un contenedor con tapa (vial de concentración) para la muestra inicial, un tubo de alimentación del gas de acarreo, preferentemente nitrógeno y un capilar con una pluralidad de deflexiones a lo largo de una mitad del tubo; el gas toca a la solución y arrastra al disolvente hacia el capilar, que se coloca de tal forma que la parte recta del tubo quede dentro del vial y las deflexiones fuera de éste. Los compuestos orgánicos arrastrados por el gas se pegan a las deflexiones del tubo, condensando a aquellos compuestos con menor presión de vapor que la del disolvente. El dispositivo no tiene un proceso de recuperación de vapores orgánicos, pero puede ser integrado como un accesorio. |
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