公开(公告)号：EP0897538A4

公开(公告)日：2000-05-03

申请号：EP97925616

申请日：1997-04-08

申请人： SIEVERS INSTR INC

发明人： GODEC RICHARD D ,  O'NEILL KEVIN J ,  KOSENKA PAUL K

IPC分类号： G01N27/06 ,  G01N31/00 ,  G01N33/18 ,  G01N31/12 ,  G01N21/72 ,  G01N25/08 ,  G01N25/22 ,  G01N27/02 ,  G01N27/04 ,  G01N27/12 ,  G01N33/00

CPC分类号： G01N27/06 ,  G01N31/005 ,  G01N33/1846 ,  Y10T436/23 ,  Y10T436/235

摘要： Apparatus and methods for the measurement of total organic carbon, total inorganic carbon, total carbon and total heteroorganic carbon of deionized water are described. In a preferred embodiment, the sample is split into a first stream (42) and a second stream (142). Inorganic carbon in the first stream is measured using a temperature and conductivity cell (94), and then the organic carbon in the first stream is oxidized in a U.V. oxidation module (46). The resulting carbon dioxide is transferred through a carbon dioxide permeable membrane (56) into the second stream. The second stream then passes into a second temperature and conductivity cell (194) for the measurement of total carbon.