公开(公告)号：US10571374B2

公开(公告)日：2020-02-25

申请号：US15232897

申请日：2016-08-10

申请人： DIONEX CORPORATION

发明人： Kannan Srinivasan ,  SM Rahmat Ullah

IPC分类号： G01N1/00 ,  G01N1/40 ,  B01D11/02 ,  G01N1/04

摘要： A method of extracting an analyte from a sample is described. The sample is added to a sample container. A liquid solvent and a gas are added into the sample container. The addition of the gas is controlled to establish an elevated pressure within the sample container. The liquid solvent is heated to an elevated temperature that is below the boiling temperature of the liquid solvent at the elevated pressure. A type of gas is used that does not transition to a supercritical fluid at the elevated temperature and pressure used in the extraction process. The analyte can dissolve from the solid sample into the liquid solvent. Next, at least a portion of the liquid solvent containing the dissolved analyte can be removed from the sample container for subsequent analysis.

公开(公告)号：US11123655B2

公开(公告)日：2021-09-21

申请号：US13765948

申请日：2013-02-13

申请人： Dionex Corporation

发明人： Kannan Srinivasan ,  SM Rahmat Ullah

IPC分类号： B01D11/02 ,  G01N1/40 ,  G01N30/00

摘要： A parallel accelerated solvent extraction system includes a plurality of extraction cells, a temperature controlled zone for maintaining the plurality of extraction cells at a desired temperature, a plurality of collection vessels, each fluidly coupled to a respective extraction cell via a flow restrictor configured to maintain a pressure, a solvent pump for supplying extraction solvent to the plurality of extraction cells, and a switching valve for sequentially directing extraction solvent flowing from the solvent pump to respective ones of the plurality of extraction cells. A method of parallel accelerated solvent extraction is also disclosed.

公开(公告)号：US10948466B2

公开(公告)日：2021-03-16

申请号：US15449868

申请日：2017-03-03

申请人： DIONEX CORPORATION

发明人： Kannan Srinivasan ,  Mrinal Sengupta ,  SM Rahmat Ullah

IPC分类号： G01N30/96 ,  G01N30/34 ,  G01N30/62

摘要： An in-line electrolytic reagent concentrator device that circumvents the need for additional pumps and supplies of reagents to support operation of a carbonate or ammonia removal device. The device generates regenerant solutions as strong as, or even stronger, than commercially recommended regenerant solutions. The device may also regenerate eluent solutions so as to reduce the frequency of eluent maintenance and replacement in ion chromatography systems.

公开(公告)号：US10746639B2

公开(公告)日：2020-08-18

申请号：US15232934

申请日：2016-08-10

申请人： DIONEX CORPORATION

发明人： Kannan Srinivasan ,  SM Rahmat Ullah

IPC分类号： G01N1/00 ,  G01N1/40 ,  B01D11/02 ,  G01N1/04

摘要： A method of extracting an analyte from a sample is described. The sample is added to a sample container. A liquid solvent and a gas are added into the sample container. The addition of the gas is controlled to establish an elevated pressure within the sample container. The liquid solvent is heated to an elevated temperature that is below the boiling temperature of the liquid solvent at the elevated pressure. A type of gas is used that does not transition to a supercritical fluid at the elevated temperature and pressure used in the extraction process. The analyte can dissolve from the solid sample into the liquid solvent. Next, at least a portion of the liquid solvent containing the dissolved analyte can be removed from the sample container for subsequent analysis.