公开(公告)号：JPH03130645A

公开(公告)日：1991-06-04

申请号：JP19604690

申请日：1990-07-23

Applicant: PHILIP MORRIS PROD

Inventor： DONARUDO II REIDEN

IPC: G01N21/19 ,  G01N21/53

Abstract: PURPOSE: To monitor the concentration of a target compound continuously by providing a flow cell where a first channel for passing a fluid solution and a second channel for passing the beams of electromagnetic radiation cross at one point and detecting the intensity of electromagnetic radiation beams. CONSTITUTION: A device has means 1, 2, 3, 5, and 7 that are directed along a path and generate the beams of circular polarization monochromatic energy electromagnetic radiation alternately left and right and a flow cell 9 where a first channel for passing a fluid solution and a second channel for passing electromagnetic radiation beams cross at one point, the electromagnetic radiation beams cross a first plate 10, the intensity of beams is detected so that the fluid liquid and a second plate 13 are crossed and is converted to electrical signals of DC and AC components by a photomultiplier 22 and a lock-in amplifier 25, and hence a digital computer 28 continuously measures the concentration of a target compound.