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handle: 10261/51237
[ES] Se ha desarrollado un dispositivo miniaturizado mejorado que permite la extracción con líquidos a altas presiones y temperatura controlada de especies químicas de distinta naturaleza de muestras semi-sólidas o sólidas empaquetadas en una celda cerrada, superando algunas limitaciones relacionadas con la inercia ténnica del sistema. El dispositivo incorpora una resistencia insertada en un tubo de acero y un motor que guía aire a través del tubo para el calentamiento de la cámara donde se colocan las celdas de extracción. Tanto las resistencias como el motor pueden encenderse y apagarse independientemente. El dispositivo mejorado permite acortar el tiempo necesario para realizar la extracción con líquidos de especies químicas de distinta naturaleza de muestras semi-sólidas o sólidas, lo que constituye una avance muy útil para la resolución de diversos problemas dentro del campo de la preparación de muestra en Química Analítica.
[EN] The invention relates to an improved miniature device that has been developed for use with liquids at high pressures and at a controlled temperature for the extraction of different types of chemical species from semi-solid or solid samples contained in a closed cell, thereby overcoming certain limitations linked to the thennal inertia ofthe system. The device includes a resistor that is inserted into a steel tube and a motor which guides air through the tube in order to heat the chamber containing the extraction cells. Both the resistors and the motor can switch on and off independently. The improved device reduces the time required for the liquid-based extraction of different types of chemical species from semi-solid or solid samples, thereby providing a very beneficial advance in tenns of solving different problems that exist within the field of sample preparation in analytical chemistry.
Universidad Computense de Madrid, Consejo Superior de Investigaciones Científicas (España)
A2 Solicitud de patente sin informe sobre el estado de la técnica
Peer reviewed
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