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1.发明授权MULTI-CYCLE LOOP INJECTION FOR TRACE ANALYSIS BY ION CHROMATOGRAPHY APPARATUS AND METHOD 失效更多周期注水LOOP以跟踪分析IONENCHROMATOGRAPHIEVORRICHTUNG和程序
公开(公告)号：EP0868664B1
公开(公告)日：2009-12-09
申请号：EP96944389.4
申请日：1996-12-17
申请人： DIONEX CORPORATION
发明人： RIVIELLO, John, M. , REY, Maria, A.
CPC分类号： G01N30/20 , G01N30/02 , G01N30/16 , G01N30/96 , G01N2030/167 , G01N2030/965 , B01D15/36
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2.发明公开MULTI-CYCLE LOOP INJECTION FOR TRACE ANALYSIS BY ION CHROMATOGRAPHY APPARATUS AND METHOD 失效更多周期注水LOOP以跟踪分析IONENCHROMATOGRAPHIEVORRICHTUNG和程序
公开(公告)号：EP0868664A1
公开(公告)日：1998-10-07
申请号：EP96944389.0
申请日：1996-12-17
申请人： DIONEX CORPORATION
发明人： RIVIELLO, John, M. , REY, Maria, A.
IPC分类号： G01N30
CPC分类号： G01N30/20 , G01N30/02 , G01N30/16 , G01N30/96 , G01N2030/167 , G01N2030/965 , B01D15/36
摘要： An ion chromatographic apparatus and method for on-column preconcentration of trace ionic contaminants for quantitative trace analysis by ion chromatography. The method includes the multi-cycle, sequential steps of loading and purging of sample solution into and out of a sample injection loop (26) to cumulatively preconcentrate a separator column (30) with a cumulative amount of sample. Each purging step includes directing pressurized liquid, at a substantially constant rate and for a predetermined period of time to the sample injection loop (26), to drive up to about 98 % of the known volume of the sample solution from the sample injection loop (26). In turn, this flushed volume of sample solution passes through an ion exchange resin column (30) for concentration of the trace ionic contaminants in the resin.
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