SIM: 选择离子监测(Selected Ion Monitoring) 就是只监测一个或几个特定的离子，（三重四极杆可以用Q1扫描，也可以用Q3扫描）
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...谱图这种质谱图可以提供未知物的分子量和结构信息可以进行库检索质谱仪还有另外一种扫描方式叫选择离子监测(select ion Moniring SIM)这种扫描方式是只对选定的离子进行检测而其它离子不被记录它的最大优点一是对离子进行选择性检测，只记录特征的、感兴趣的离...
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的选择离子监测方式 Selected ion monitoring
采用选择离子监测模式 selected ion monitoring
选择性离子监测 selective ion monitoring ; xelected ion monitoring SIM ; selected ion monitoring
采用选择监测离子 selected ion monitoring
超声波抽提气溶胶样品，用GC - MS的选择离子监测(SIM)方式测定EPA提出的优先监测的16种多环芳烃的含量。
The aerosol sample was extracted by ultrasonic technique and 16 of the PAH's were determined, in priority, as proposed by EPA, by GC-MS with selected-ion monitoring (SIM).
带自动进样器的气相色谱-质谱联用仪（GC-MS），分流/不分流进样，可编程的柱箱和可以进行离子选择监测。
Gas Chromatograph-Mass Spectrometer (GC-MS) with an auto-sampler, split/splitless inlet, programmable GC oven, and capable of selective ion monitoring.
在桂林国家森林公园选择不同的植被群落类型进行空气离子浓度监测，研究森林游憩区空气负离子浓度水平变化。
To study the variation of aero-anion concentration in forest recreational areas, the concentrations of aero-ion were measured under different vegetation types in Guilin National forest Park.
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