A method of separating chemical constituents by gas ion distillation, comprising introducing a gaseous sample into a reaction space at a pressure above about 10 torr, wherein the gaseous sample comprises at least two chemical constituents; introducing a gaseous reactant into the reaction space, wherein the reactant comprises reactant ions configured to selectively ionize the at least two chemical constituents of the sample; allowing the reactant ions to selectively ionize the at least two chemical constituents of the sample to form product ions, wherein the order of product ion formation is governed by the vapour concentrations of the at least two chemical constituents, the concentration of the reactant ions and the reaction rate coefficients of the at least two chemical constituents; and subsequently removing the ionized at least two constituents from the reaction space in the order of product ion formation.
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
Method and device for identifying gases and/or ion mobility spectrometer and method for offsetting residual humidity are provided. The object of the invention is to develop a generic method for offsetting residual humidity in an ion mobility spectrometer and a related device, which has a simple structure and which fully exploits the reduced diffusion. This is achieved by a variable drift chamber drift gas velocity, which leads to differing penetration depths of the humidity into the drift chamber, and thus to variable residual humidities in the drift chamber. Methods of this type and the associated devices for detecting and identifying gases are used to recognise and identify chemical compounds, in particular explosive materials or material compounds and/or those which are damaging to health, and which must be identified in very low concentrations.
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
H01J 49/00 - Particle spectrometers or separator tubes
3.
METHOD AND DEVICE FOR DETECTING AND IDENTIFYING NOT EASILY VOLATILIZED SUBSTANCES IN A GAS PHASE BY MEANS OF SURFACE-ENHANCED VIBRATION SPECTROSCOPY
The invention relates to the identifying of not easily volatilized substances, in particular hazardous materials, in a gas phase. A measurement cell (2) and a gas supply device (14) connected to the measurement cell (2) are heated and a plasmonic surface (1) arranged in the measurement cell (2) is temperature-controlled such that the plasmonic surface (1) has a lower temperature than the measurement cell (2) and the gas supply device (14). The gas phase is guided through the gas supply device (14) into the measurement cell (2) in such a manner that the gas phase reaches the temperature-controlled plasmonic surface (1). Substances adsorbed from the gas phase on the plasmonic surface (1) are analyzed by an optical process. Surface-enhanced Raman spectroscopy or surface-enhanced infrared spectroscopy can be used as the optical process. Selectivity can be increased by combining both methods. Selectivity can be additionally increased by using a gas detector, preferably an ion-mobility spectrometer, along with one or both optical processes, and thus the false alarm rate reduced without loss of time.
G01N 21/35 - Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
The invention relates to a method for identifying gases, which are ionized and the drift times of the positive and negative product ions through drift spaces are measured and the measured drift times are evaluated, wherein for measuring the drift times the product ions are accelerated to drift velocities by a resulting electrical field. It is provided that the positive and negative product ions move synchronously and in parallel in the same direction.
The invention further relates to a device for identifying gases, which includes at least two drift tubes, wherein each of the drift tubes has at least one respective detector for detecting product ions. For this purpose, at least two drift tubes are arranged in parallel next to each other and are delimited, on one hand, by a common inlet system and, on the other hand, by at least one detector.
H01J 49/00 - Particle spectrometers or separator tubes
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
5.
Method and apparatus for ionizing gases using UV radiation and electrons and identifying said gases
The invention relates to a method for ionizing and identifying gases, wherein the gases to be identified are ionized in a reaction chamber and the product ions are measured, wherein the measurement of the product ions takes place via electrical fields acting on the product ions and the detection is performed with a detector for ions. It is provided that ionization takes place via UV radiation, and that simultaneously or sequentially ionization by electrons takes place. The invention further relates to a device for ionizing and identifying gases, which includes an ion source chamber having an ion source and an ion mobility spectrometer. For this purpose, a partition between the ion source chamber and the ion mobility spectrometer has a UV-transparent window and a window permeable for electrons, wherein UV radiation and electron radiation can be generated in the ion source chamber with the ion source.
INTEGRATED FINGERPRINT AND HAZARDOUS MATERIAL SENSOR, AUTOMATIC ENTRY CONTROL FOR PEOPLE, SAID ENTRY CONTROL COMPRISING SUCH AN INTEGRATED SENSOR, AND USE OF SUCH A SENSOR FOR SECURITY CHECKPOINTS IN AN AIRPORT
The invention relates to an integrated fingerprint and hazardous material sensor arrangement for checkpoints for persons and hazardous materials. First, the fingerprint sensor can detect a fingerprint. The fingerprint sensor is then brought into the active region of a hazardous material sensor device which can analyze a material sample provided by the person to be checked upon touching the scanner. The security checkpoints in airports can thereby be designed to be more efficient.
Method for identifying gases, in which the gases to be identified are ionized and the drift times of the positive and negative product ions through drift spaces are measured and the measured drift times are evaluated, wherein, in order to measure the drift times, the product ions are accelerated to drift speeds by a resultant electric field. Provision is made for the positive and negative product ions to simultaneously move in the same direction in a parallel manner. Also an apparatus (100) for identifying gases, which apparatus has at least two drift tubes (19, 20), wherein each of the drift tubes (19, 20) respectively has at least one detector (9, 10) for detecting product ions. For this purpose, provision is made for at least two drift tubes (19, 20) to be beside one another in a parallel manner and to be bounded by a common inlet system (1), on the one hand, and by at least one detector (9, 10) in each case, on the other hand. The invention also relates to an apparatus for introducing ions into a drift space of an ion mobility spectrometer.
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
8.
METHOD AND APPARATUS FOR IONIZING GASES USING UV RADIATION AND ELECTRONS AND IDENTIFYING SAID GASES
Method for ionizing and identifying gases, in which the gases to be identified are ionized in a reaction space and the product ions are measured, wherein the product ions are measured by way of electric fields acting on the product ions and detection is carried out using a detector for ions. Provision is made for the ionization to take place using UV radiation and for ionization using electrons to take place at the same time or successively. Furthermore disclosed is an apparatus for ionizing and identifying gases, which apparatus comprises an ion source chamber (5) with an ion source (1) and an ion mobility spectrometer (2). In this respect, provision is made for a separating wall (6) between the ion source chamber (5) and the ion mobility spectrometer (2) to have a UV-radiation-permeable window (8) and an electron-permeable window (7), wherein UV radiation and electron radiation are generatable in the ion source chamber (5) using the ion source (1).
G01N 27/64 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
The invention relates to a device (10) for detection of harmful substances with a measurement unit (28) for measuring at least one harmful substance and an evaluation unit (30) for determining the concentration of the at least one harmful substance. The invention also relates to a method for detecting harmful substances in a gas mixture. It is hereby provided that the gas mixture is tested for a gaseous harmful substance or simultaneously for several gaseous harmful substances, wherein the gaseous harmful substance or the gaseous harmful substances is/are measured with different sensor means, and the gaseous harmful substances are optionally chemically modified such that a measurement is performed with the existing sensor means.
G01N 1/22 - Devices for withdrawing samples in the gaseous state
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
G01N 31/00 - Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroupsApparatus specially adapted for such methods
10.
Method and device for the detection and identification of gases in airplane interior spaces
The concept underlying the invention is the development of a generic method for the detection and identification of gases in airplane interior spaces and an associated device, which is small and manageable, has a simple design, and allows the immediate and simultaneous detection and identification of the gases to be examined. This is achieved in that the supply air of the airplane interior space (20) is fed to a measuring device (1) and the measurement results of the measuring device (1) are analyzed by means of mathematical methods. Such methods and the associated devices for the detection and identification of gases in airplane interior spaces are used in order to spot and verify gases, particularly odors and explosive gases and/or gases harmful to people's health.
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
H01J 49/04 - Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locksArrangements for external adjustment of electron- or ion-optical components
B64D 45/00 - Aircraft indicators or protectors not otherwise provided for
11.
Method and device for detection and identification of gases
Methods and devices identify gases and allow immediate and simultaneous detection of the chemical compounds to be tested. The methods and devices use a function of the electric field strength, for identification the material-specific mobility and simultaneously the change in this mobility, which is achieved in that due to the resulting electric field, each ionized molecule has a drift velocity which is partially increased or decreased, wherein the resulting electric field is a DC field, on which an asymmetric AC field is superimposed. The methods and devices for the detection and identification of gases are used to identify and detect chemical compounds, such as, explosive and/or unhealthy substances or compounds, which may be detected in very small concentrations.
G01N 27/64 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
G01N 27/62 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode
H01J 49/00 - Particle spectrometers or separator tubes
12.
METHOD AND DEVICE FOR THE DETECTION AND IDENTIFICATION OF GASES IN AIRPLANE INTERIOR SPACES
The concept underlying the invention is the development of a generic method for the detection and identification of gases in airplane interior spaces and an associated device, which is small and manageable, has a simple design, and allows the immediate and simultaneous detection and identification of the gases to be examined. This is achieved in that the supply air of the airplane interior space (20) is fed to a measuring device (1) and the measurement results of the measuring device (1) are analyzed by means of mathematical methods. Such methods and the associated devices for the detection and identification of gases in airplane interior spaces are used in order to spot and verify gases, particularly odors and explosive gases and/or gases harmful to people’s health.
G01N 27/64 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
13.
METHOD AND DEVICE FOR DETECTION AND IDENTIFICATION OF GASES
The aim of the invention, is to develop a method of the type in question, for identification of gases and a corresponding device, which has a simple construction permitting an immediate and concurrent detection of the chemical compounds under examination and hence for identification of the material-specific mobility and at the same time the change in said mobility as a function of electrical field strength. Said aim is achieved, wherein each ionised molecule has a drift speed through the resultant electrical field, which is partly increased or reduced, the resulting electrical field being a DC field, with a superimposed asymmetrical alternating field. Said method and corresponding devices for detection and identification of gases are used for recognition and detection of chemical compounds, in particular of explosive and/or toxic materials or material compounds for detection in extremely low concentrations.
G01N 27/64 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosolsInvestigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electric discharges, e.g. emission of cathode using wave or particle radiation to ionise a gas, e.g. in an ionisation chamber
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Chemical measuring apparatus for scientific research in laboratories, namely, measuring cups, scales and dispensers that measure output for use in the detection of gaseous compounds, such as toxic gases or odors, and for use in the food and chemical industry and also in the safety industry [ Chemical analyses ]
