Working method of ICPMS

The invention belongs to the technical field of isotope analysis and relates to a working method of an ICPMS. The working method includes a normal sample analysis stage and an online maintenance stage; during the normal sample analysis, the ICPMS is operated according to performance requirements required by sample analysis. During the online maintenance phase, the state of the instrument is changed such that contamination and residue entering a subsequent portion during sample rinsing is reduced, or online maintenance operation is performed on a subsequent contamination and residue portion. 本发明涉及同位素分析技术领域，具体的说是一种ICPMS的工作方法，区分正常样品分析和在线维护两阶段，在正常样品分析时，按照样品分析需要维持需要的性能要求来运行。在在线维护阶段，改变仪器的状态，使得在样品冲洗期间进入后续部分的污染和残留减少，或者对后续污染和残留部分进行在线维护操作。