| 摘要 |
PROBLEM TO BE SOLVED: To enable introduction and analysis of a sample having a high concentration without dilution. SOLUTION: The sample is introduced into a transfer liquid passage 17 from an injector 21, and a sample pump 19 is operated. The sample is carried up to a passage branching part 23 by transfer liquid sent from the sample pump 19, and divided there into an introduction side branch passage 25 and a discharge side branch passage 33 with a ratio determined by a passage resistance ratio shown by resistance tube 33a/(resistance tube 31a + sample loop 29). The sample introduced into the discharge side branch passage 33 is discharged to a drain 37 through the resistance tube 33a and a confluence part 37. The sample introduced into the introduction side branch passage 25 is carried to the sample loop 29 through a passage selector valve 27 (A). The sample loop 29 is connected to the middle between an analytical pump 3 in an analytical passage 7 and a separation column 9 by switching the passage selector valve 27, to introduce the sample introduced into the sample loop 29 into the separation column 9 (B).
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