HIGH SENSITIVITY AND HIGH RESOLUTION MEASURING DEVICE OF LIQUID CHROMATOGRAPH MASS SPECTROMETRIC DEVICE

摘要

PURPOSE: To provide a means to sense spectrum stably, which controls parameters about control items at a high speed from a low mass number to a high without resorting to a devoted control computer. ;CONSTITUTION: A specimen separated from an LC 1 is atomized by an atomizing part 2, passed through a solvent removing part 3, and ionized with a high voltage which is impressed through a needle electrode 4. The ionized specimen is dissociated by the drift voltage 9 impressed between the first thin hole 5 and second thin hole 6, converged by a focusing lens 11, and subjected to mass dispersion made by a mass spectrographic part 13. The ions after mass dispersion are deflected by a deflecting electrode 14 and sensed by a sensor 16. A control part 17 controls parameters while the setting of the timing and address from a control CPU to a memory is made in synchronization with mass- dispersion signals independently from change-over control CPU and the output value of a shift register to control the mass dispersion signals.;COPYRIGHT: (C)1993,JPO&Japio