公开(公告)号：US07329346B2

公开(公告)日：2008-02-12

申请号：US11065335

申请日：2005-02-23

申请人： Yan Liu ,  Christopher A. Pohl ,  Nebojsa Avdalovic ,  John M. Riviello ,  Archava Siriraks

发明人： Yan Liu ,  Christopher A. Pohl ,  Nebojsa Avdalovic ,  John M. Riviello ,  Archava Siriraks

IPC分类号： B01D15/08

CPC分类号： G01N30/96 ,  G01N30/62 ,  G01N2030/965

摘要： A liquid chromatographic system is provided including catalytically combining hydrogen and oxygen gases in the chromatography eluent stream in a catalytic gas elimination chamber, to form water and thereby reduce the gas content in the eluent stream. Also, a liquid ion chromatographic system in which the effluent from the detector is recycled to a membrane suppressor and then is mixed with a source of eluent for recycle to the chromatographic column.

公开(公告)号：US5571725A

公开(公告)日：1996-11-05

申请号：US398117

申请日：1995-03-03

申请人： Christopher A. Pohl ,  Archava Siriraks ,  Rosanne W. Slingsby ,  Harpreet S. Dhillon

发明人： Christopher A. Pohl ,  Archava Siriraks ,  Rosanne W. Slingsby ,  Harpreet S. Dhillon

IPC分类号： G01N30/02 ,  G01N30/06 ,  G01N30/14 ,  G01N30/96

CPC分类号： G01N30/96 ,  G01N30/14 ,  G01N2030/146 ,  G01N30/02 ,  G01N30/06 ,  Y10T436/173076 ,  Y10T436/19 ,  Y10T436/193333 ,  Y10T436/25125 ,  Y10T436/25375 ,  Y10T436/255

摘要： Selected polyvalent anions or cations are removed from a liquid sample stream as a pretreatment for the analysis of the liquid sample stream. A stream containing anions of interest, precipitable anions (e.g. sulfate ions) to be removed and an added displacing salt flow through a first cation exchange resin bed having precipitable exchangeable polyvalent ions (e.g. barium ions). Displacing polyvalent cation (e.g. calcium) displaces the exchangeable polyvalent ion from the cation exchange resin into the liquid sample at sufficient concentration to cause the precipitable anion and exchangeable cation to form a precipitate which remains in the resin bed and is thus is removed from the sample stream. Then the anions of interest in the soluble portion of the liquid sample stream are separated and detected. The invention is also applicable to the removal of precipitable cations (e.g. barium ions) by reversing the roles of the anions and cations.

摘要翻译： 选择的多价阴离子或阳离子作为用于分析液体样品流的预处理从液体样品流中去除。 包含感兴趣的阴离子，待除去的可沉淀的阴离子（例如硫酸根离子）的流和通过具有可沉淀的可交换的多价离子（例如钡离子）的第一阳离子交换树脂床的添加的置换盐流。 置换多价阳离子（例如钙）将可交换的多价离子从阳离子交换树脂以足够的浓度置换成液体样品，使得可沉淀的阴离子和可交换的阳离子形成残留在树脂床中的沉淀，因此从样品中除去 流。 然后分离和检测液体样品流的可溶部分中的感兴趣的阴离子。 本发明也适用于通过逆转阴离子和阳离子的作用来除去可沉淀的阳离子（例如钡离子）。