In a method for optimizing an ion detector a control voltage, such as in a mass spectrometry system, an array of mass scan data is acquired. Based on the size of the largest peak in the array or part of the array, a determination is made as to whether the current detector gain should...
Chromatograph-MassSelective Detector, operating in the SelectiveIonMonitoring mode. cfs.gov.hk cfs.gov.hk 最後,利用氣相層析質譜儀,以選擇性離子監測的模式,檢測甲基汞衍生物。 cfs.gov.hk cfs.gov.hk This 20 L final extract was then analysed by Gas Chromatography/ High-resolutionMass Spectrome...
A new method of ion trap operation (U.S. Pat. No. 2,939,952 and U.S. patent application Ser. No. 453,351 12-29-82 ) has overcome most of the past limitations and is gaining popularity as a product called the Ion Trap Detector. ...
A recently described ion charge coupled device detector IonCCD (Sinha and Wadsworth, Rev. Sci. Instrum. 76(2), 2005 ; Hadjar, J. Am. Soc. Mass Spectrom. 22(4), 612–624, 2011 ) is implemented in a miniature mass spectrometer of sector-field instrument type and Mattauch-Herzog (MH)-...
3.44.2.3.2Ion Mobility Spectrometry Ion mobilityspectrometry(IMS) is the most commonly used technique in instruments for field presumptive analysis.IMSmeasures the mobility of ions accelerated by aconstant electric fieldthrough a drift region to a detector. The mobility of each ion is related to the...
The detector, usually a conductivity cell, measures the conductance of the solution passing through it. The conductance is proportional to the concentration of ions dissolved in the solution. It is essential to pass the sample–mobile-phase mixture through a suppresser column – another ion-exchange...
This method of calibration, rather than absolute measurement, is also preferred for travelling wave-type IM separators that use time-varying electric fields within the drift region to propel the ions toward the detector43,44. During the course of a measurement, the instrument operator can vary ...
Incorporation of an electro-optic ion detector into an improved plasma-source mass spectrograph Throughout the history of mass spectrometry, array detectors have been used to conduct simultaneous and continuous mass-spectrographic studies. The benefit... DA Solyom,JH Barnes,Ole A Grn,... - Guang ...
Trap Orbitrap MS is one of Fourier Transform based hybrid instruments, while the first mass analyzer is a linear ion trap (LIT), and the second one is high resolution Orbitrap. The LIT-orbitrap combination can be used for both MS and MSn experiments because the LIT itself is a detector. ...
While using, in order to direct the ion facing toward the position on the medial axis of the aforementioned source, the direction means which are formed (8,9,10) it is provided. The ion gun is used, independence or the ion detector (13) and also offers the mass spectrometry device....