| 摘要 |
The instrument cold sprays a solution sample at a low temperature and desolvates the sample. Under this condition, a mass analysis is performed. The instrument comprises a needle pipe ( 8 ) through which the solution sample is passed, a sheath tube ( 24 ) formed coaxially with the needle pipe ( 8 ) and passing a temperature-controlled nebulizing gas therethrough, the above-described desolvation block ( 3 ), means for cooling the block ( 15 ), means for heating the block ( 4 ), and a temperature sensor ( 5 ) for detecting the temperature of the block ( 3 ). The block ( 3 ) has a passage for charged liquid droplets of the solution sample cold sprayed from the tip of the needle pipe ( 8 ), and acts to remove the solvent from the charged liquid droplets flowing through the passage. A coldspray mass spectrometer is offered which has a desolvation block whose temperature can be easily controlled. In the instrument, condensation of water and electrical leakage are prevented for a long time. The instrument can perform measurements stably and is easy to handle.
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