| 摘要 |
PROBLEM TO BE SOLVED: To detect acrylamide eluted in a state less affected by foreign substances by holding the foreign substances in a specimen solution more effectively. SOLUTION: An ODS column 2 and a NH<SB>2</SB>column 4 are series-connected as columns for separation. The column 2 on the upstream side is provided with a liquid sending pump 8 for supplying water 6 as a moving phase. An injector 10 for specimen solution injection is disposed in a flow path connecting the sending pump 8 to the column 2. A liquid sending pump 14 for supplying acetonitrile 12 is connected to a connection part of the columns 2 and 4 for causing another solvent different from the moving phase 6 to run together therewith as a moving phase. A mass spectrometer as a detector 16 is connected thereto for detecting an eluate in the downstream side column 4. COPYRIGHT: (C)2004,JPO&NCIPI
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