160results about "Particle spectrometer methods" patented technology

And re-sampling triggered by uncertain results in mass spectrum screening. The invention provides a system / technical scheme for promoting repeated sample injection triggered by uncertain results in mass spectrum screening. In various embodiments, the system may access a screening list specifying a plurality of target compounds. In aspects, the system can classify a plurality of target compounds as present or absent in a sample, respectively, based on causing a chromatograph and a mass spectrometer to perform an iterative injection scheme on the sample, with subsequent iterations of the iterative injection scheme having progressive compound selectivity, and is triggered by the uncertain presence or absence of the classification result in the previous iteration.

A system includes a first pre-separation device configured to perform a first pre-separation of precursor ions according to mobilities of the precursor ions and a second pre-separation device positioned downstream of the first pre-separation device configured to perform a second pre-separation of precursor ions based on a mass-to-charge ratio (m / z) of the precursor ions. The system further includes a mass spectrometer positioned downstream of the second pre-separation device configured to acquire mass spectra for precursor ions emitted from the second pre-separation device. The second pre-separation device is synchronized with the mass spectrometer such that an m / z range of precursor ions emitted from the second pre-separation device corresponds to a precursor m / z isolation window of the mass spectrometer.

A method for a structural analysis of a sample molecule using a mass spectrometer includes: a process for obtaining a standard analysis condition for each of setting items for performing a molecular-related ion measurement, where the setting items include an ion amount setting item, a mass-to-charge-ratio range setting item, and a signal intensity setting item; a process for performing a product ion measurement under an altered analysis condition, to acquire mass spectrum data of the product ion measurement, where the altered analysis condition is prepared by changing at least one of analysis conditions of the ion amount setting item, the mass-to-charge-ratio range setting item and the signal intensity setting item in the standard analysis condition; a process for extracting peaks corresponding to the fragment ions; and a process for determining at least a portion of the structure of the sample molecule based on mass information of the extracted peaks.

Systems and methods are disclosed for automated method parameter configuration for differential mobility separations. As non-limiting examples, various aspects of this disclosure provide receiving a sample in an open port interface; transferring the sample to an ionization source; ionizing the transferred sample; introducing the ionized sample into a mass spectrometer; mass analyzing the ionized sample to produce an initial mass analysis result; determining a peak width of the initial mass analysis result; and determining a dwell time for subsequent measurements based on the determined peak width, a pre-defined number of data points across subsequent mass analysis peak widths, and a number of different analytes to be assessed for the sample. The sample may be diluted and transferred to the ionization source by a sample introduction apparatus selected from a group including an acoustic droplet ejector (ADE), a pneumatic ejector, a piezoelectric ejector, and a hydraulic ejector.

The invention relates to the quantitative measurement of steroidal compounds by mass spectrometry. In a particular aspect, the invention relates to methods for quantitative measurement of steroidal compounds from multiple samples by mass spectrometry.

Disclosed herein are methods and systems for individual ion mass spectrometry (I2MS). The methods and systems described herein parse I2MS data and allows for informed tandem mass spectrometry analyses by determining a target m / z that increases the yield of an intact mass corresponding to an analyte of interest while reducing the yield of additional detectable masses.

A method for optimizing at least one parameter setting of at least one mass spectrometry device (110) operating at unit resolution is disclosed. The method comprises the following steps:a) determining at least one analyte detection window for detecting an analyte of interest with the mass spectrometry device (110), wherein the analyte detection window is defined by a central mass to charge ratio value of the analyte and a predefined width, wherein the central mass to charge ratio value of the analyte is set to a theoretical mass to charge ratio value of the analyte of interest having more than one decimal place and / or a mass to charge ratio value of the analyte of interest determined by a high resolution mass spectrometry measurement having more than one decimal place;b) determining at least one internal standard detection window for detecting an internal standard substance with the mass spectrometry device (110), wherein the internal standard detection window is defined by a central mass to charge ratio value of the internal standard substance and the pre-defined width, wherein the central mass to charge ratio value of the internal standard substance is set to a mass to charge ratio value of the internal standard substance calculated relative to the analyte of interest and having more than one decimal place and / or to a mass to charge ratio value of the internal standard substance determined by a high resolution mass spectrometry measurement having more than one decimal place.

A miniature electrode apparatus is disclosed for trapping charged particles, the apparatus includes, along a longitudinal direction, a first end cap electrode, a central electrode having an aperture, and a second end cap electrode. The aperture is elongated in the lateral plane and extends through the central electrode along the longitudinal direction and the central electrode surrounds the aperture in a lateral plane perpendicular to the longitudinal direction to define a transverse cavity for trapping charged particles. Electric fields can be applied in a y-direction of the lateral plane across one or more planes perpendicular to the longitudinal axis to translocate and / or manipulate ion trajectories.

A method for multiple reaction monitoring using a mass spectrometer (106) is proposed. The method comprises i) measuring (128), using a mass spectrometer (106), multiple reaction monitoring transitions of both a quantifier and a qualifier of both an internal standard and an analyte using alternating multiple reaction monitoring, the alternating multiple reaction monitoring comprising at least three multiple reaction monitoring channel groups, one of the multiple reaction monitoring channel groups being measured at the respective theoretical m / z values of both the quantifier and the qualifier of both the internal standard and the analyte, and the two other multiple reaction monitoring channel groups being measured at respective m / z values shifted by a predetermined level higher and lower; ii) comparing (130), for at least two of the groups, at least two of the quantifier / qualifier ratios of the multiple reaction monitoring transitions of the internal standard with reference values from a database (126) using at least one processing device (120), the comparing including determining a deviation between the quantifier / qualifier ratio and the reference value; iii) determining (132), if at least one deviation of the quantifier / qualifier ratio is within at least one predetermined tolerance range, using a processing device (120), a measurement result from the measured multiple reaction monitoring transitions of the analyte and the internal standard, and, if not, rejecting (136) the measured multiple reaction monitoring transitions; and including.

A system includes a first pre-separation device configured to perform a first pre-separation of precursor ions according to mobilities of the precursor ions and a second pre-separation device positioned downstream of the first pre-separation device configured to perform a second pre-separation of precursor ions based on a mass-to-charge ratio (m / z) of the precursor ions. The system further includes a mass spectrometer positioned downstream of the second pre-separation device configured to acquire mass spectra for precursor ions emitted from the second pre-separation device. The second pre-separation device is synchronized with the mass spectrometer such that an m / z range of precursor ions emitted from the second pre-separation device corresponds to a precursor m / z isolation window of the mass spectrometer.

A data-dependent analysis (DDA) mass spectrometry technique involves ionizing a sample to generate sample ions, analyzing the sample ions by performing one or more MS1 mass analysis scans to obtain MS1 ​​data, identifying one or more precursor ions from the MS1 data, and subsequently analyzing the sample ions by performing one or more MS2 mass analysis scans. Each MS2 scan targets one of the one or more precursor ions identified from the MS1 data.The procedure further includes, for each of the one or more precursor ions identified from the MS1 data: determining a value from the MS1 data that is indicative of a collision cross section (CCS) of that precursor ion; and selecting, based on the CCS-indicative value(s), which precursor ion(s) the one or more MS2 bulk analysis scans should target, and / or determining, based on the CCS-indicative value(s), an order in which the one or more MS2 bulk analysis scans should target the precursor ions.

A system for controlling experiment execution. The system includes an instrument electronic device and a workflow electronic device. The workflow electronic device includes an electronic processor. The electronic processor is configured to receive a submission request via a web application. The submission request includes an experiment design including an acquisition task. The electronic processor is also configured to receive an acquisition rule including pass criteria and an action to take when acquired data does meet not the pass criteria. The electronic processor is further configured to associate the acquisition rule with the acquisition task generate a request to perform the acquisition task, and send, to the instrument electronic device, the request to acquire data. The electronic processor is also configured to determine whether the acquired data meets the pass criteria and, in response to determining the acquired data does not meet the pass criteria, perform the action.

Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, an instrument includes a sample introduction device and a mass spectrometer. The mass spectrometer includes first logic for receiving a sample containing an analyte from a queue, second logic for determining instrument methods and data analysis parameters based on a property of the analyte, and third logic for processing the sample by applying the instrument methods and data analysis parameters.

An ion source is disclosed that comprises a positioning assembly that can position a sprayer with respect to an ion inlet. The ion source includes a first imaging device that can provide a first view of a position of the sprayer with respect to the ion inlet, and a second imaging device that can provide a second, different view of a position of the sprayer with respect to the ion inlet. The second view has a higher magnification than the first view.

A sampling interface enables the sampling of ions in a mass spectrometer for subsequent spectroscopic analysis. The sampling interface comprises: an inlet receiving a quantity of particles from an ion source, the quantity of particles including ions for spectroscopic analysis; a skimmer downstream of the inlet and comprising an aperture through which particles from the inlet pass; an extraction lens downstream of the skimmer and configured for extracting ions from the particles passed through the aperture at the skimmer; an adjustable voltage source applying a bias voltage to the extraction lens so as to generate an electric field in at least a region between the extraction lens and the skimmer; and a controller controlling the adjustable voltage source to apply a bias voltage to the extraction lens, in order to control the reduced electric field in the region immediately downstream of the skimmer.

Methods for acquiring mass spectral data of a sample across at least a portion of an m / z range include receiving mass spectral data of the sample across the m / z range. The m / z range is partitioned into one or more sets of m / z sub-ranges, each set comprising one or more m / z sub-ranges, by dividing the m / z range into a plurality of m / z bins, determining an indication of ion abundance for each m / z bin, based on the mass spectral data, and forming an m / z sub-range of the one or more sets of m / z sub-ranges by assigning m / z bins having ion abundances that correspond to at least a threshold degree to the formed m / z sub-range. A mass analysis is performed on the sample for each set of m / z sub-ranges, thereby acquiring one or more partial mass spectral data sets.

A pump management system may determine an operating mode for a mass spectrometer; set, based on the operating mode, a pump speed of a turbo pump used to create one or more vacuum stages for the mass spectrometer; and cause the turbo pump to operate at the pump speed while the mass spectrometer operates in accordance with the operating mode. Additionally or alternatively, the pump management system may monitor, using one or more instruments external to the turbo pump, a condition associated with the mass spectrometer while the mass spectrometer operates in accordance with the operating mode; determine, based on the monitoring, that the condition changes by more than a threshold value; and adjust, based on the condition changing by more than the threshold value and while the mass spectrometer is in operation, the pump speed.

The invention relates to an imaging elemental analyzer for imaging one or more analyte elements in an organic sample, wherein the analyzer comprises: a chamber for receiving an organic sample containing one or more analyte elements to be imaged, wherein the internal chamber pressure surrounding the sample is in the range of 10 -5 up to 10 -2mbar; at least one irradiant selected from: (i) an ion gun for irradiating the sample with a high-intensity primary ion beam, wherein the primary ions are generated in the ion gun at a pressure below 1 mbar, the ion gun serving to focus the primary ion beam onto a localized spot on the sample surface and to move the spot over time to a plurality of locations on the sample surface; (ii) a laser for irradiating a localized spot on the sample surface and to move the spot over time to a plurality of locations on the sample surface; a gas-filled RF ion guide for receiving the generated ions, comprising the elements released from the sample in response to irradiation by the primary ions or the laser, wherein the RF ion guide prevents the propagation of any ions whose m / z values ​​are less than the mass or mass range of the analyte elements;and a time-of-flight (TOF) mass analyzer for recording the ions or reaction products of the secondary ions formed from the RF ion guidance, wherein the TOF mass analyzer is configured for a repetition rate of at least 5 kHz. The invention also relates to a corresponding method and a corresponding device for imaging one or more inorganic, non-volatile elements.

Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, a scientific instrument support apparatus comprising first logic to generate an electrical signal in a first component of a scientific instrument, wherein the generated electrical signal induces, through capacitive coupling, an electrical response signal in a second component of the scientific instrument, second logic to monitor the electrical response signal induced in the second component, third logic to determine an operational status of the second component based on the monitored electrical response signal, wherein the operational status indicates that the second component is not functioning properly when the monitored electrical response signal is not within a predetermined signal range is disclosed.

The present invention relates to systems and methods for inductively coupled plasma (ICP) analysis, including mass cytometry. Inductively coupled plasma (ICP) analyzers use an ICP torch to generate a plasma that atomizes and ionizes a sample. Analysis of the atomic ions can be performed by atomic analysis, such as mass spectrometry (MS) or atomic emission spectrometry (AES). Particle-based ICP analysis includes analysis of particles, such as cells, beads, or laser ablation plumes, by atomizing and ionizing the particles in an ICP torch prior to atomic analysis. In mass cytometry, the mass tags of the particles are analyzed by mass spectrometry, such as ICP-MS. The systems and methods of the present application include one or more of an ICP load coil including annular fins, particle suspension sample introduction fluidics, and an ICP analyzer.

Techniques for performing data acquisition and analysis are described. A multi-mode acquisition strategy may be performed which iteratively selects mass isolation windows of different sizes in different scan cycles to acquire experimental data. The mass isolation windows selected may provide for acquiring elevated energy scan data for a defined set of m / z values. Single scan data analysis may be performed. Data analysis may include forming precursor charge clusters, chaining precursor charge clusters having the same mass to charge ratio to form peaks profiles, and using criteria to align precursor and product ions of the experimental data. Unsupervised and supervised clustering may be performed using a database and composite ion spectra formed from experimental data. Also described are a small molecule acquisition enhancement and additional techniques applicable for biopharmaceutical and other applications.

To provide a system for performing multiplexed ion pre-separation for mass spectrometry.SOLUTION: The system includes a pre-separation device for separating the precursor ions into a set of discrete fractions of precursor ions based on a physical property of the precursor ions and for sequentially transmitting a first subset of the discrete fractions of precursor ions included in the set of discrete fractions of precursor ions. The system further includes a mass spectrometer positioned downstream of the pre-separation device for receiving the first subset of the discrete fraction of precursor ions. The mass spectrometer includes an ion storage for accumulating a first population of product ions generated from each discrete fraction of precursor ions included in the first subset of discrete fractions of precursor ions and a mass analyzer for performing mass analysis of the first population of product ions.SELECTED DRAWING: Figure 1

A method of mass and / or mobility spectrometry comprises: separating a sample with a chromatography device such that different analytes in the sample have different retention times in the chromatograph

The technical problem of the present application is to rapidly stabilize lactone in a sugar chain. A sample preparation method is a sample preparation method for preparing a sample containing a sugar chain, the preparation method including the steps of: performing a lactonization reaction that lactonizes at least a portion of sialic acid contained in the sugar chain; and performing an amidation reaction that amidates the lactone of the lactonized sialic acid by adding an amidation reaction solution to the sample, the amidation reaction solution containing at least one selected from the group consisting of ammonia, amines, and salts thereof that react with the lactonized sialic acid.

A method of mass spectrometry and / or mobility spectrometry includes: providing an ion separation device including a plurality of electrodes; providing a first force to urge the ions in a first direction along an axis of the ion separation apparatus while also providing a second force to urge the ions in a second, opposite direction such that ions of different mobility or mass-to-charge ratios reach different equilibrium positions at different locations along the axis; and varying the first force and / or the second force during a single elution cycle of the ion separation device so as to sequentially release ions from the ion separation device in an increase order of ion mobility or mass-to-charge ratio or in a decrease order of ion mobility or mass-to-charge ratio; wherein the altering step is performed such that, during the elution cycle, ions in a first range of mobility or mass-to-charge ratio are eluted from the ion separation device at a first rate and ions in a second, separate range of mobility or mass-to-charge ratio are eluted from the ion separation device at a second, different rate.

A method for optimizing at least one parameter setting of at least one mass analyzer (110) operating at unit resolution is disclosed. The method includes: a) determining at least one analyte detection window for detecting an analyte of interest using a mass analyzer (110), the analyte detection window being defined by a central mass-to-charge ratio value of the analyte and a predefined width, the central mass-to-charge ratio value of the analyte being set to a theoretical mass-to-charge ratio value of the analyte of interest having two or fewer decimal places and / or a mass-to-charge ratio value of the analyte of interest determined by a high-resolution mass spectrometric measurement having two or fewer decimal places; and b) determining at least one internal standard detection window for detecting an internal standard using the mass analyzer (110), the internal standard detection window being defined by a central mass-to-charge ratio value of the internal standard and a predefined width, the central mass-to-charge ratio value of the internal standard being set to a mass-to-charge ratio value of the internal standard calculated for the analyte of interest having two or fewer decimal places and / or a mass-to-charge ratio value of the internal standard determined by a high-resolution mass spectrometric measurement having two or fewer decimal places.

A business method for use in classifying patient samples. The method includes steps of collecting case samples representing a clinical phenotypic state and control samples representing patients without said clinical phenotypic state. Preferably the system uses a mass spectrometry platform system to identify patterns of polypeptides in said case samples and in the control samples without regard to the specific identity of at least some of said polypeptides. Based on identified representative patterns of the state, the business method provides for the marketing of diagnostic products using representative patterns. The present invention relates to systems and methods for identifying new markers, diagnosing patients with a biological state of interest, and marketing / commercializing such diagnostics. The present invention relates to systems and methods of greater sensitivity, specificity, and / or cost effectiveness.

Disclosed herein are scientific instrument support systems, as well as related methods, computing devices, and computer-readable media. For example, in some embodiments, an apparatus, includes a sample introduction device and mass spectrometer. The mass spectrometer includes first logic to receive a sample from a queue, the sample comprising an analyte; second logic to determine instrument methods and data analysis parameters based on a nature of the analyte; and third logic to process the sample by applying the instrument methods and data analysis parameters.

The present invention discloses a large-flow membrane sampling device and a method for using the device for realizing high-sensitivity mass spectrometry analysis of gas, relates to the technical field of mass spectrometer sampling analysis, solves the problem of low membrane enrichment efficiency of existing membrane sampling devices, and improves the analysis sensitivity of the instrument. The specific scheme is as follows: it includes a gas supply mechanism, a membrane enrichment mechanism and a mass spectrometer connected in sequence, two gas outlet joints and one gas inlet joint are provided on the membrane enrichment mechanism, the three joints are arranged in an equilateral triangle and the center of the equilateral triangle coincides with the center of the membrane enrichment mechanism, an enrichment membrane is provided in the membrane enrichment mechanism, the enrichment membrane divides the inner chamber of the membrane enrichment mechanism into an independent sample flow chamber and a sample enrichment chamber, and the sample enrichment chamber is connected to the mass spectrometer through a capillary.

Mass spectrometric method (100) for detecting an analyte in a biological sample solution comprising the steps: providing (101) a constant stream of ionized sample molecules comprising the analyte from the biological sample solution and an analyte-specific internal standard including electrospray ionization (ESI), and / or nano-electrospray ionization (nano-ESI); performing (102a) a spatial accumulation of the analyte and the analyte-specific internal standard and performing (102b) at least partially a first separation of the analyte and the analyte-specific internal standard from other components of the ionized sample molecules based on the size and / or shape of the ionized molecules; performing (103) at least partially a second separation of the analyte and the analyte-specific internal standard from remained other components of the ionized sample molecules based on the mass to charge ratio of the ionized molecules; fragmenting (104) the ionized analyte into ionized analyte fragments and the analyte-specific internal standard into ionized analyte-specific internal standard fragments by collision with particles of a gas phase; providing (105) a stream comprising the ionized analyte fragments and the ionized analyte-specific internal standard fragments on a detection mass spectrometer; and recording (106) with the detection mass spectrometer at least two pre-summed mass-resolved spectra and summing (107) the at least two pre-summed mass-resolved spectra to obtain a final mass-resolved spectrum.