78results about "Portable spectrometers" patented technology

The ionization device of the present invention is intended for use in conjunction with an aerosol TOF MS operating in a continuous mode and is capable of ionizing particulated substances in a wide range of particle masses. In the illustrated embodiment, the ionization unit consists of three coaxial cylindrical bodies having a three aligned longitudinal slits for directing electron beams from externally located electron gun onto the axially arranged flow of droplets. The cylindrical bodies are connected to voltage sources so that the external cylindrical body functions as an anode that extracts electrons from the current-heated filament. The central cylindrical body, in combination with the aforementioned anode, serves as an electron-energy control member for precisely controlling and selecting the energy of electrons that reach the flow of particles, while the inner cylindrical body functions as a decelerating member that can be used for adjusting energy of electrons which reached the flow of particles. The heated filament of each electron gun, which is used as a source of electrons, is inclined with respect to the aforementioned longitudinal axis whereby modulation applied to the elongated outer electrode of the electron gun provides different ionization conditions for specific particles of predetermined masses for analysis of which the aerosol TOF MS is tuned.

A mass spectrometry system for continuous control of environment based on the use of an aerosol TOF MS that provides operation with a high duty cycle of up to 98% and can be realized in the form of a mobile unit having a data acquisition and analysis system with three levels of data correlation on the basis of constant interaction between various actuating mechanisms of the system via a central processing unit. The TOF MS is based on the use of quadrupole lenses with angular gradient of the electrostatic field. On the entrance side, the TOF MS contains an ion-optic system that is used for focusing, aligning, and time-modulating the ionized flow of particles and a deflector modulator that provides alternating deflections of the flow of particles between two positions for aligning the flow with two inlet openings into the TOF MS. As a result, two independently analyzed discrete flows of particles pass through the ion mass separation chamber of the TOF MS without interference with each other. The charged particles fly in direct and return paths along helical trajectories which extend the length of the flight time. The time of the collision and the magnitude of the collision pulse will contain information about the M / Z ratio for the particles being registered. Multiplication of a single flow of particles into a plurality of independent and spatially separated flows propagating in one chamber increases efficiency of the TOF MS and makes it possible to use it in continuous and high-duty applications with the duty cycle as high as 98%, which is unattainable with any known device of this class. The system can be mounted either on an underwater and ground vehicle, or on an aircraft.

A combined analyzing apparatus includes (i) a front end unit 30 including a photoacoustic spectroscope that takes a gas sample inside and analyzes the gas sample by a photoacoustic spectroscopy, (ii) an FTIR 10 that is a light analyzing apparatus that takes the analyzed gas sample inside and analyzes the gas sample based on a change of light which is transmitted through the gas sample, (iii) an MS 20 that is a mass analyzing apparatus that further takes the analyzed gas sample inside and analyzes a mass of an ingredient of the gas sample, (iv) a battery 40 that supplies the front end unit 30, and the FTIR 10 and the MS 20 with electric power source, and (v) a portable case 50 that houses the front end unit 30, the FTIR 10, the MS 20 and the battery 40.

A sample collection and detection system is described. The detection system provides a sample chamber fluidly coupled to a secondary ionisation source to allow the introduction of vapour generated from the sample into an ion path generated from the secondary ionisation source. The secondary ionisation source is a secondary electrospray ionisation (SESI) source, and is usefully employed in dust analysis.

The invention generally relates to enclosed desorption electrospray ionization probes, systems, and methods. In certain embodiments, the invention provides a source of DESI-active spray, in which a distal portion of the source is enclosed within a transfer member such that the DESI-active spray is produced within the transfer member.

An apparatus for heating a surface to liberate at least one analyte for detection thereof includes a source of energy to irradiate the surface and a collector to collect at least one gas from the surface, the at least one gas being capable of including the a least one liberated analyte. The apparatus further includes a detector linked to the collector to detect the presence of the at least one liberated analyte wherein the detection is used to control the power of the energy source by utilizing feedback relating to at least one condition of the surface.

Method and apparatus for chromatographic high field asymmetric waveform ion mobility spectrometry, including a gas chromatographic analyzer section intimately coupled with an ionization section, an ion filter section, and an ion detection section, in which the sample compounds are at least somewhat separated prior to ionization, and ion filtering proceeds in a planar chamber under influence of high field asymmetric periodic signals, with detection integrated into the flow path, for producing accurate, real-time, orthogonal data for identification of a broad range of chemical compounds.

A field portable mass spectrometer system comprising a sample collector and a sample transporter. The sample transporter interfaces with the sample collector to receive sample deposits thereon. The system further comprises a time of flight (TOF) mass spectrometer. The time of flight mass spectrometer has a sealable opening that receives the sample transported via the sample transporter in an extraction region of the mass spectrometer. The system further comprises a control unit that processes a time series output by the mass spectrometer for a received sample and identifies one or more agents contained in the sample.

Person-portable mass analysis instrumentation configured to perform nultidimensional mass analysis is provided. Mass analysis instrumentation can include a housing encompassing components of the instrumentation with the housing of the instrumentation defining a space having a volume of equal to or less than about 100,000 cm3. Instrument assemblies are also provided that can include a housing coupled to an instrument component isolation assembly, wherein the component isolation assembly is isolated from an environment exterior to the housing. Exemplary instrument assemblies can include at least first and second components configured to provide analysis with a housing of the instrument at least partially encompassing the first and second components and the first component being rigidly affixed to the housing. An isolation assembly can also be provided that is rigidly affixed to the second component with the isolation assembly being isolated from received inputs of the housing.

The present invention relates to a mobile analytical system to make stable carbon isotope measurements of both bulk hydrocarbon and individual hydrocarbon compounds in natural gas at the exploration and production well site.

Methods and apparatuses for portable mass spectrometry are disclosed. The apparatuses comprise at least one source of ionized analyte, at least one frequency scanning subsystem, at least one detector, and optionally at least one vacuum pump, and are portable. In some embodiments, the apparatuses comprise multiple sources of ionized analyte and / or are configured to obtain mass spectra of a large analyte, such as analyte with an m / z ratio of at least 105, or analyte with a molecular weight of at least 105 Da, as well as mass spectra of small molecule analyte. In some embodiments, the methods comprise obtaining mass spectra with a portable apparatus described above.

A field portable mass spectrometer system comprising a sample collector and a sample transporter. The sample transporter interfaces with the sample collector to receive sample deposits thereon. The system further comprises a time of flight (TOF) mass spectrometer. The time of flight mass spectrometer has a sealable opening that receives the sample transported via the sample transporter in an extraction region of the mass spectrometer. The system further comprises a control unit that processes a time series output by the mass spectrometer for a received sample and identifies one or more agents contained in the sample.

Mass spectrometry systems or assemblies therefore include an ionizer that includes at least one planar conductor, a mass analyzer with a planar electrode assembly, and a detector comprising at least one planar conductor. The ionizer, the mass analyzer and the detector are attached together in a compact stack assembly. The stack assembly has a perimeter that bounds an area that is between about 0.01 mm2 to about 25 cm2 and the stack assembly has a thickness that is between about 0.1 mm to about 25 mm.

Mass spectrometry systems include an ionizer, mass analyzer and the detector, with a high pressure chamber holding the mass analyzer and a separate chamber holding the detector to allow for differential background pressures where P2<P1 which generates gas flow through an unsealed, sealed or partially sealed ion trap and enhances detected signal relative to when P2=P1.

The present invention relates to portable systems and devices, and corresponding methods, for detecting bioagents. In particular, the present invention provides systems, devices, and methods that utilize one or more of a sample preparation component, sample analysis component employing broad range primers, and sample detection component.

A mass spectrometer system includes a pulsed ion source configured to generate ionized molecules and neutral molecules. The system also includes a first enclosure coupled in flow communication with the pulsed ion source. The first enclosure defines a first vacuum chamber and an ion inlet aperture. The system further includes a detector positioned within said first enclosure and a plurality of ion transmission devices positioned within the first vacuum chamber and aligned with the ion inlet aperture. The plurality of ion transmission devices is configured to channel and accelerate ionized molecules through a first transmission path such that the ionized molecules and the neutral molecules are physically separated in space and temporally separated.

The present invention relates to an ultraviolet diode and an atomic mass analysis ionization source collecting device using an MCP. In the manufacturing of a portable atomic mass analyzer, an object of the present invention is to use an MCP electron multiplier plate, whereby ultraviolet photons emitted from an ultraviolet diode are irradiated on a front surface plate of the MCP electron multiplier plate to induce primary electrons, an amplified electron beam is collected from the electrons, and an electron beam is generated at a low temperature and low power and having a discharge time that is accurately controlled. The atomic mass analysis ionization source collecting device using an ultraviolet diode and an MCP according to the present invention comprises: an ultraviolet diode emitting ultraviolet rays by means of supplied power; an MCP electron multiplier plate inducing and amplifying primary electron discharge from ultraviolet photons from the ultraviolet diode, and collecting a large amount of electron beams from an MCP reverse surface plate; an electron condenser lens condensing the electron beam amplified through the MCP electron multiplier plate; an ion trap atomic mass separator ionizing gas sample molecules by means of an electron beam injected through the electron condenser lens; and an ion detector performing detection of ions separated from the ion trap atomic mass separator, by means of an atomic mass spectrum.

A combined analyzing apparatus includes (i) a front end unit including a photoacoustic spectroscope that takes a gas sample inside and analyzes the gas sample by a photoacoustic spectroscopy, (ii) a light analyzing apparatus that takes the analyzed gas sample inside and analyzes the gas sample based on a change of light which is transmitted through the gas sample, and (iii) a mass analyzing apparatus that further takes the analyzed gas sample inside and analyzes a mass of an ingredient of the gas sample. The combined analyzing apparatus also includes (iv) a battery that supplies the front end unit, and the light analyzing apparatus and the mass analyzing apparatus with electric power source, and (v) a portable case that houses the front end unit, the light analyzing apparatus, the mass analyzing apparatus and the battery.

A measurement state in a mass spectrometer device is determined so that the measurement method for the next round of measurement can be automatically determined. The mass spectrometer device (1) is provided with: a first calculation unit (6) that calculates the total amount of ion in a mass spectrum; a second calculation unit (6) that calculates the half-value width of a representative peak selected from peaks appearing in the mass spectrum; and a control unit (7) that determines the measurement method for use in the next round of measurement on the basis of the total amount of ion and the half-value width of the representative peak.

An inlet and vacuum system for a portable, or handheld, mass spectrometer. The mass spectrometer comprises three vacuum chambers, which includes two ion funnels connected in series in the first two vacuum chambers, followed by a mass spectrometer analyzer and ion detector in the third vacuum chamber. The ion funnels are arranged with their central axes aligned in a linear fashion. The sample inlet to the portable mass spectrometer is from an external ion source, typically operating at atmospheric, or near atmospheric, pressure. An improvement in desolvation, and a reduction in the injection of neutrals, excited state molecules, and particulates into the analyzer is achieved by incorporating a lateral offset for the inlet capillary used to transfer ions into the first injection funnel. Additional efficiency for ion focusing is achieved by replacing the ion guide, typically used with atmospheric pressure ionization sources, with an additional ion funnel.

The invention generally relates to enclosed desorption electrospray ionization probes, systems, and methods. In certain embodiments, the invention provides a source of DESI-active spray, in which a distal portion of the source is enclosed within a transfer member such that the DESI-active spray is produced within the transfer member.

A portable detection device includes a surface sampling probe connected to a mass spectrometer, preferably mounted on a portable cart, and a transfer line for transporting samples from the probe to the mass spectrometer. The surface sampling probe is formed from a circular block or disk of metal such as copper and is provided with various holes in which cartridge heaters are located. The disk is preferably electroplated with nickel and then gold to allow for efficient heat transfer to the surface to be sampled. With this arrangement, in addition to other advantages, the presence of very low volatile or non-volatile materials may be determined.

The present invention relates to a device for obtaining the ion source of a mass spectrometer using an ultraviolet diode and a CEM module, having the purpose of inducing initial electron emission using a CEM module and by radiating ultraviolet photons emitted from the ultraviolet diode to the entrance of the CEM module to obtain a large amount of amplified electron beams from the exit and to produce electron beams the emission times of which are accurately controlled at low temperature and at low power. The present invention is characterized by a device for obtaining the ion source of a mass spectrometer using an ultraviolet diode and a CEM module, the device consisting essentially of: an ultraviolet diode emitting ultraviolet rays by means of supplied power; an electron multiplier inducing and amplifying the initial electron emission of ultraviolet photons from the ultraviolet diode and obtaining a large amount of electron beams from the exit; an electron condenser lens condensing the electron beams amplified by the electron multiplier; an ion trap mass separator ionizing gas sample molecules by the electron beams injected through the electron xondensing lens; and an ion detector detecting ions separated from the ion trap mass separator by mass spectrum, wherein the electron multiplier is a CEM module.