Abstract:
An apparatus for signal improvement of a fourier transform ion cyclotron resonance(FT-ICR) mass spectrometer is provided to stabilize the motion of activated ions by applying an optimized voltage to each electrode. An apparatus for signal improvement of a fourier transform ion cyclotron resonance(FT-ICR) mass spectrometer comprises trapping electrodes(10) separated from the front and rear surfaces, activating and detecting electrodes(11), first adjusting electrodes(12), and second adjusting electrodes(13). The activating and detecting electrodes placed between the trapping electrodes has a trap. The first adjusting electrodes are connected to the activating and detecting electrode via a capacitor. The second adjusting electrodes, a portion of the trapping electrodes, are electrically isolated.
Abstract:
A method for controlling a tandem mass analyzer of pipeline type is provided to independently operate a test material injection section, a first ion transfer section, an ion selection/separation section, an ion collision section, and a second ion transfer section. A method for controlling a tandem mass analyzer of pipeline type includes the steps of: operating a first ion transfer section and operating a second ion transfer section by a control unit(S28); operating an ion selection/separation section and operating a trap section by the control unit(S29); and colliding ions selected or separated by the ion selection/separation section and dividing the ions into a small size and discharging the ions and operating the test material injection section(S29a).
Abstract:
A method for discovering pharmacologically active substances from natural products at high speed, including: obtaining an activity profile by testing pharmacological activity of a plurality of samples; obtaining mass profiles based on mass spectra resulting from analysis of the samples by mass spectrometry; and determining molecular weight of pharmacologically active substances by comparing and analyzing the activity profile and the mass profile. The method allows fast discovery of pharmacologically active substances by performing high resolution mass spectrometry for numerous components included in an extract sample of natural products and comparing with the activity test data. The information about the intensity of the activity of the pharmacologically active substances of the natural products allows effective utilization of the natural products.
Abstract:
Fouriertransformation-Ionenzyklotronresonanz-Massenspektrometer, das umfasst: eine Ionisierungsquelle (101), um eine Probe einzuleiten, ein Massenfilter (102), um ein in eine Vakuumkammer eingeleitetes Ion auszuwählen und zu speichern, eine Kollisionszelle (103) und einen Ionenübertragungsleiter (104), um das gespeicherte Ion zu einer Ionenzyklotronresonanz-Falle (105) zu übertragen, die ein Signal misst, wobei die Ionisierungsquelle (101), der Massenfilter (102), die Kollisionszelle (103), der Ionenübertragungsleiter (104) und die Ionenzyklotronresonanz-Falle (105) in der Vakuumkammer angeordnet sind, gekennzeichnet durch ein Erfassungssystem, das einen Kryo-Vorverstärker (200) aufweist, der die Signale der Ionenzyklotronresonanz-Falle (105) verstärkt, und der in der Vakuumkammer so nahe wie möglich bei der Ionenzyklotronresonanz-Falle (105) installiert ist, und ein Kryo-Kühlungssystem (300), das einen Kryo-Kühler (301) und ein Kryogen-Zirkulationsrohr (302, 302-1) aufweist, die außerhalb der Vakuumkammer installiert sind, um den Kryo-Vorverstärker (200) zu kühlen, und einen Kryo-Kühlungsflansch (303), der am dem Kryo-Kühlsystem (300) zugewandten Ende der Vakuumkammer vorgesehen ist und der...
Abstract:
A Fourier transform ion cyclotron resonance mass spectrometer (FT-ICR MS) is provided. A preamplifier is installed as nearest to an ion cyclotron resonance (ICR) trap as possible at a detector part in the mass spectrometer, and thermal noise generated at the preamplifier is minimized by means of a cryo-cooling system to increase a signal-to-noise ratio of ion detection signals such that an ultra-low amount of specimen can be detected, which was impossible in the related art.
Abstract:
A tandem Fourier transform ion cyclotron resonance mass spectrometer is provided. In the mass spectrometer, the ions selected by a FT-ICR mass analyzer, which can perform an ion selection process and a mass measurement process with a time interval between the processes, are transmitted through an ion guide to a collision cell, which is located a predetermined distance from the FT-ICR mass analyzer, to split into fragment ions. The fragment ions are transmitted to the FT-ICR mass analyzer that measures the mass of the fragment ions. The fragment ions are generated in the collision cell 60 established separately from the FT-ICR mass analyzer 40 according to the mass spectrometer. Accordingly, It can solve various problems (e.g., the radius reduction of cyclotron motion of colliding ions, or the removal of periphery gas after generating the fragment ions) occurred in a tandem mass spectrometer using a conventional tandem-in-time mass analysis method. Also, a high resolution and with sensitivity measurement can be achieved. Moreover, when a reagent gas instead of a collision gas in the collision cell is injected, the gas phase reaction of the selected ions and the reagent gas can be observed, and the mass of the ions generated in the gas phase reaction can be measured.