ION CHROMATOGRAPH SWITCHING SUPPRESSOR

PROBLEM TO BE SOLVED: To provide an ion chromatograph that suppresses detector signal fluctuation originating in switching of a suppressor column.SOLUTION: In an ion chromatographic device, a sample and an eluent are led to an analysis flow channel in which at least a separation column 40, suppresso...

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Bibliographische Detailangaben
Hauptverfasser: KUBOTA HIROTO, SATO SHINJI
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide an ion chromatograph that suppresses detector signal fluctuation originating in switching of a suppressor column.SOLUTION: In an ion chromatographic device, a sample and an eluent are led to an analysis flow channel in which at least a separation column 40, suppressor means 60, and a detector 70 are communicating, in order to detect an ion species. The suppressor means 60 includes plural chambers (61a, 61b, and 61c) that can hold an ion exchange material for reducing background electric conductivity. The plural chambers are constituted to be switchable at a flow channel position 61a communicating with the analysis flow channel and at one or more flow channel positions not communicating with the analysis flow channel. At the flow channel position 61c not communicating with the analysis flow channel, means is coupled for equilibrating the ion exchange material in the chamber using the eluent.SELECTED DRAWING: Figure 2 【課題】サプレッサーカラム切り替えに由来する検出器信号の変動を抑制したイオンクロマトグラフを提供する。【解決手段】試料および溶離液を、少なくとも分離カラム40、サプレッサー手段60および検出器70を連通する分析流路に導きイオン種を検出するイオンクロマトグラフ装置において、サプレッサー手段60は、バックグラウンド電気伝導度を低減させるためのイオン交換材を保持可能な複数のチャンバー(61a、61b、61c)を備え、複数のチャンバーは分析流路と連通する流路位置61aおよび分析流路と連通しない1以上の流路位置)において切り替え可能に構成されており、分析流路と連通しない流路位置61cに、チャンバー内のイオン交換材を溶離液で平衡化する手段を連結した。【選択図】図2