公开(公告)号：US3798973A

公开(公告)日：1974-03-26

申请号：US27190172

申请日：1972-07-14

Applicant: PERKIN ELMER CORP

Inventor： ESTEY W

IPC: G01N1/00 ,  G01N30/10 ,  G01N30/34 ,  G01R1/10

CPC classification number: G01N30/10 ,  G01N2030/347

Abstract: A method for providing enhanced stream splitting is provided by conveying a plug comprising a mixture of a sample material and carrier gas to a stream splitting means and initially dividing a leading portion of the plug during a relatively short interval of time into a measurement component and into a discharge component. The division or split ratio is automatically altered to a second value according to which the remaining and principal portion of the plug is divided by conveying the discharge component through a discharge volume which is relatively small with respect to the volume of the plug and through a flow restriction to atmosphere. The measurement component of the plug is simultaneously conveyed toward a chromatographic column. The second split ratio is thereby maintained substantially constant for the passage of the remaining and principal portion of the plug past a split station of the stream splitting means. A chromatographic apparatus in accordance with features of the invention comprises a stream splitting means, means providing a flow channel communicating between a first outlet of the stream splitting means and a separating column, and means providing a second flow channel communicating between a second outlet of the stream splitting means and a flow restrictor means which is vented to atmosphere. The second flow channel has a relatively small volume for providing that a discharge component of the plug which flows therein after splitting is rapidly vented to atmosphere. In a particular embodiment, the discharge volume is substantially less in magnitude than the volume of the plug.

Abstract translation: 通过将包括样品材料和载体气体的混合物的塞子输送到流分离装置并且在相对短的时间间隔内将塞子的引导部分分成测量部件并将其分成 放电元件。 分割或分流比自动改变为第二值，根据该值，通过将放电部件传送通过相对于插塞的体积相对较小的排出体积并通过流动来分离插塞的剩余部分和主要部分 限制大气。 将塞子的测量部件同时输送到色谱柱。 因此，通过塞子的剩余部分和主要部分经过分流装置的分离台，第二分流比保持基本恒定。