Method of analyzing a composition containing impurities

Details Method of analyzing a composition containing impurities Method of analyzing a composition containing impurities

G - Physics

01

N

G01N 1/42 (2006.01) C01B 33/107 (2006.01) G01N 21/71 (2006.01) H01J 49/02 (2006.01)

Patent

CA 2744029

A method of analyzing a composition and a method of processing the composition are provided. The composition contains impurities and has a boiling point less than ambient temperature and/or a vapor pressure greater than water at 14.5 °C. The method of analyzing the composition comprises a step of providing the composition in a liquid state within a vessel. The composition is chilled in the liquid state within the vessel at a temperature below the boiling point of the composition, thereby maintaining the composition in the liquid state. The chilled composition in the vessel is converted to produce at least one of a vaporized composition and a nebulized composition, which converted composition is introduced into an analytical device. A measurement of content of the impurities of the composition is obtained from the analytical device. The method of processing the composition includes the same steps as the method of analyzing the composition, and but further requires that at least a portion of the composition remains in the supply tank.

L'invention concerne un procédé danalyse dune composition et un procédé de traitement de la composition. La composition contient des impuretés et possède un point d'ébullition inférieur à la température ambiante et/ou une pression de vapeur supérieure à l'eau à 14,5°C. Le procédé danalyse de la composition comprend une phase consistant à verser la composition à létat liquide dans une cuve. La composition est refroidie à létat liquide dans la cuve à une température inférieure au point d'ébullition de la composition, maintenant ainsi la composition à létat liquide. La composition refroidie dans la cuve est convertie pour obtenir au moins une composition parmi une composition vaporisée et une composition nébulisée, ladite composition convertie étant injectée dans un dispositif analytique. On obtient une mesure de la teneur en impuretés de la composition à partir du dispositif analytique. Le procédé de traitement de la composition comporte les mêmes phases que le procédé danalyse de la composition, mais exige de plus quau moins une partie de la composition reste dans le réservoir dalimentation.

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