Method for directly injecting a liquid sample into a capillary chromatography column and apparatus for implementing the method

Method for directly injecting a liquid sample into a capillary chromatography column and apparatus for implementing the method

A method for directly injecting a liquid sample into a capillary chromatography column, by which a liquid sample that includes the substance to be analyzed and the relative solvent is withdrawn from a vial with an automatic sampler having a syringe with a needle, and is then introduced into an inser...

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Hauptverfasser: GALLI STEFANO, SIRONI ALBINO, GALLI MARIO
Format: Patent
Sprache:eng
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INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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creator GALLI STEFANO
SIRONI ALBINO
GALLI MARIO
description A method for directly injecting a liquid sample into a capillary chromatography column, by which a liquid sample that includes the substance to be analyzed and the relative solvent is withdrawn from a vial with an automatic sampler having a syringe with a needle, and is then introduced into an insert, with which the injector of the chromatograph is provided, such that the terminal portion of the chromatography column is coaxially inserted into the needle to cause migration by capillarity of a part of the sample from the needle to the column. Excess sample overflowing from the needle at the moment in which the end of said column is inserted thereinto is received in a cavity, and the residence time of the end of the column within the needle is controlled.
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subjects INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
title Method for directly injecting a liquid sample into a capillary chromatography column and apparatus for implementing the method
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