Title:
液体クロマトグラフ質量分析計
Document Type and Number:
Japanese Patent JP4782278
Kind Code:
B2
Abstract:
The present invention proposes a liquid chromatograph/mass spectrometer (LC/MS) constructed so that only necessary data are efficiently collected, and that the apparent dynamic range and/or the operational condition of the MS part is appropriately changed according to the concentrations and/or the qualitative information of the sample components coming from the LC part. In the LC/MS, the passage of the carrier liquid is designed so that the carrier liquid containing the sample is first introduced to an auxiliary detector and then to a main detector (mass spectrometer) with a delay of a preset time period. During the analysis, a controller constructs a chromatogram from the output signal of the auxiliary detector and analyzes its waveform to determine in real-time a time period ts0-te0 corresponding to each peak in the chromatogram. Then, the controller collects the measurement data by the main detector only within a time period ts1-te1 which has a delay of the preset time period Deltat from the above time period ts0-te0.
Inventors:
Yoshikatsu Umemura
Application Number:
JP2000385160A
Publication Date:
September 28, 2011
Filing Date:
December 19, 2000
Export Citation:
Assignee:
SHIMADZU CORPORATION
International Classes:
G01N27/62; G01N30/72; G01N30/86; H01J49/04; G01N30/78; G01N30/82
Domestic Patent References:
| JP2163655A | ||||
| JP61102553A | ||||
| JP2000146937A | ||||
| JP10239279A | ||||
| JP5307022A | ||||
| JP62204153A |
Attorney, Agent or Firm:
Toshifumi Kita
Hiroyuki Eguchi
Hiroyuki Eguchi