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1.发明申请
公开(公告)号：WO2023073587A1
公开(公告)日：2023-05-04
申请号：PCT/IB2022/060304
申请日：2022-10-26
摘要： The presently claimed and described technology provides a sample processing system comprising at least one sample introduction device, wherein the at least one sample introduction device is configured to receive a sample; a mass analyzer coupled to the sample introduction device; a control system configured to at least control the at least one sample introduction device and/or the mass analyzer, wherein the mass analyzer is configured to perform a first mass analysis on the sample, wherein the first mass analysis is mass screening for an analyte of interest in the sample, and wherein if the analyte of interest is detected in the sample, the mass analyzer is configured to perform a second mass analysis, wherein the second mass analysis is a quantitative analysis, comprising: ionizing the sample; monitoring, by mass spectrometry, at least one product ion transition for the at least one analyte and at least one isotopic ion transition for the at least one analyte; determining intensity and/or abundance of the at least one product ion transition and/or the at least one isotopic ion transition; and quantifying the at least one analyte present in the sample using the intensity and/or abundance of the at least one product ion transition and/or isotopic ion transition.
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公开(公告)号：WO2023057881A1
公开(公告)日：2023-04-13
申请号：PCT/IB2022/059434
申请日：2022-10-03
发明人： BRADAU, Calin , BINKO, Thomas , ALBEANU, Nicolae
IPC分类号： H01J49/00 , H01J49/40 , H01J49/0036
摘要： Systems and methods are provided for processing in real-time and using Gaussian fitting digitized signals from ions detection in time-of-flight (TOP) mass spectrometry. Acquisition/analog-to- digital conversion may be applied in the course of Ion detection during time-of-flight (TOP) mass spectrometry, with the acquisition/analog-to-digital conversion including generating, in response to detection of ions, one or more time-of-flight (TOP) based signals, and digitizing, using analog- to-digital conversion, the one or more TOP based signals, to generate corresponding digitized data. The digitized data may then be processed, in real-time and based on use of Gaussian fitting, to generate result data corresponding to the time-of-flight (TOP) mass spectrometry. The Gaussian fitting may comprise applying second (2nd) degree polynomial fit, such as by least squares via QR factorization.
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公开(公告)号：WO2023042127A1
公开(公告)日：2023-03-23
申请号：PCT/IB2022/058735
申请日：2022-09-15
发明人： LIU, Chang , IVOSEV, Gordana , ZHANG, Hui
IPC分类号： G06K9/00
摘要： Methods and systems for spectral comparison and quality assessment are disclosed. In one example, a method for assessing quality of a mass spectrum (MS) of a sample is provided. The method comprises: predefining one or more features or attributes indicative of the sample quality with reference to a target compound; and calculating a quality score for the MS with respect to the selected features or attributes.
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公开(公告)号：WO2023037295A2
公开(公告)日：2023-03-16
申请号：PCT/IB2022/058482
申请日：2022-09-08
摘要： Methods and systems for identifying one or more analytes in a sample are provided. One aspect is a method of predicting an identity of analytes in an unknown sample, the method comprising accessing a database comprising a plurality of results from analyzing samples using mass spectrometry to identify analytes, the plurality of results including annotated ion fingerprints, training a machine learning model with the plurality of results, and applying the machine learning model to the unknown sample to predict an identity of one or more analytes in the unknown sample.
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公开(公告)号：WO2023031833A1
公开(公告)日：2023-03-09
申请号：PCT/IB2022/058190
申请日：2022-08-31
发明人： LIU, Chang , VEIGA, Cristiano
摘要： Methods and systems for mass analysis are disclosed herein. An example system includes: a sample ejector configured to eject a plurality of samples from a plurality of wells of a well plate; a capture probe configured to capture the ejected samples and dilute and transport the captured samples; a nebulizer nozzle configured to receive and ionize the transported diluted samples to produce sample ions; a mass analysis instrument configured to filter and detect ions of interest from the sample ions; a controller configured to coordinate operations of the sample ejector, the capture probe, the nebulizer nozzle, and the mass analysis instrument; and a data processing system configured to acquire data from the mass analysis instrument and conduct an automatic data processing process.
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6.发明申请
公开(公告)号：WO2023021381A1
公开(公告)日：2023-02-23
申请号：PCT/IB2022/057513
申请日：2022-08-11
IPC分类号： C08L71/02 , H01J49/00 , C08G65/331 , C08G65/332 , C08G65/333 , C08G65/334
摘要： The disclosure provides compositions, methods, and kits that find use in calibrating a mass spectrometer, and can include one or more predetermined concentration(s) of one or more calibrant molecule(s) that comprise a polyethylene glycol (PEG) compounds that have a single functional group that can be ionized by an ion source, and a solvent for dissolving the calibrant molecule(s). The calibrant molecule(s) and compositions including them can be used in either positive or negative ionization mode, and can be used for calibrating a variety of mass spectrometers (e.g., APCI, ESI) operating in a variety of acquisition modes (e.g., MRM, MS/MS, etc.).
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公开(公告)号：WO2023012724A1
公开(公告)日：2023-02-09
申请号：PCT/IB2022/057271
申请日：2022-08-04
发明人： COX, David , LIU, Chang
摘要： Disclosed are methods for separating target and non-target analytes in a sample. The methods can utilize an acoustic droplet ejector (ADE) and an open port interface (OPI) to achieve liquid chromatography (LC)-like separation for an analytical instrument such as, for example, a mass spectrometer.
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公开(公告)号：WO2023002282A1
公开(公告)日：2023-01-26
申请号：PCT/IB2022/056194
申请日：2022-07-05
摘要： An analytical instrument produces intensity versus time measurements or intensity versus m/z measurements for each acquisition of n acquisitions using m instrument parameter values for each acquisition of n acquisitions, wherein n is a number greater than or equal to two and m is a number equal to or greater than one. For each acquisition of the n acquisitions, the instrument stores a data file that includes m one or more instrument parameter values applied to the instrument, producing n data files. A first data file of the n data files for a first acquisition is retrieved. A next data file of the n data files of a next acquisition is retrieved. The m corresponding parameter values of the first data file and the next data file are compared. If any corresponding parameter values differ between the first data file and the next data file, a notification of an instrument parameter difference corresponding to a name of the next data file is displayed.
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9.发明申请
公开(公告)号：WO2023275694A1
公开(公告)日：2023-01-05
申请号：PCT/IB2022/055907
申请日：2022-06-24
发明人： COVEY, Thomas , LIU, Chang
IPC分类号： H01J49/00 , H01J49/04 , H01J49/0031 , H01J49/0404 , H01J49/0431
摘要： Methods and systems for delivering a liquid sample to an ion source for the generation of ions and subsequent analysis by mass spectrometry are provided herein. In accordance with various aspects of the present teachings, MS-based systems and methods are provided in which the flow of solvent into an open port sampling probe fluidly coupled to an ion source can be selectively stopped during the addition of one or more reagents into the drained open end of the sampling probe. Upon re-initiating the flow of solvent, the reagents and/or the reaction products can be delivered to the ion source. In one aspect, a method for chemical analysis is provided, the method comprising directing a flow of a first solvent from a solvent conduit to an ion source via a sampling space of a sampling probe, wherein the sampling space is at least partially defined by an open end of the sampling probe. The flow of the first solvent into the sampling space from the solvent conduit may be terminated for a first duration, and the sampling space drained. A second solvent and one or more reactants may then be added to the drained sampling space through the open end during the first duration. Thereafter, the flow of the first solvent may again be directed from the solvent conduit to the ion source via the sampling space such that the second solvent is delivered to the ion source, and such that one or more reaction products contained within the second solvent and generated by said one or more reactants may be ionized for mass spectrometric analysis.
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公开(公告)号：WO2022259201A1
公开(公告)日：2022-12-15
申请号：PCT/IB2022/055380
申请日：2022-06-09
IPC分类号： H01J49/42
摘要： Systems and methods described herein provide for the injection of ions into an ELIT at a variety of kinetic energies such that the ions turn around at various locations. In certain aspects, such systems and methods for operating an ELIT may reduce ion density at the turning points to reduce the impact of the space charge effect. Various aspects of the present teachings also provide for the design or optimization of the ELIT electrode spacing and/or injection potentials to reduce the impact of the space charge effect. In some related aspects, the ELIT may additionally provide time-focusing of the various ion groups at the detector as they oscillate along their respective path lengths.
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