Provided is an analysis device capable of obtaining sufficient sensitivity to a gas phase component, which is the analysis target, by a mass spectrometer even when a reactive gas is used as a carrier gas in evolved gas analysis. An analysis device 1 includes a heating device 3, a first carrier gas introduction device 4, a connecting conduit 5, a capillary tube 6, an oven 2, a mass spectrometer 7, and a second carrier gas introduction device 8. The second carrier gas introduction device 8 is configured to introduce helium, hydrogen and/or nitrogen into the connecting conduit 5.

An air quality monitoring device and associate method of monitoring air quality is provided. An example air quality monitoring device may include a housing comprising a chamber and an inlet port, a plurality of sensors to measure air quality data, and a controller. The inlet port is structured to selectively receive ambient air flow such that the sensors measure air quality data associated with the ambient air flow and to selectively receive air flow directly from an outlet port of a positive airway pressure machine such that the sensors measure air quality data associated with the air flow from positive airway pressure machine. The controller compares the measured air quality data associated with the ambient air flow with the measured air quality data associated with the air flow from the positive airway pressure machine to determine net air quality data associated with air flow from the positive airway pressure machine.

Proposed is a geological hydrogen productivity evaluation system. The system may include a gas injection device configured to inject a reactive gas, a water vapor collecting device configured to collect water vapor generated in the gas injection device when the gas is injected. The system may also include a main reacting device in which a reaction between a solvent and a rock sample, which are loaded into the inside thereof, is performed using the gas supplied from the gas injection device. The system may further include a discharging device through which reactants generated by the reaction in the main reacting device are discharged, and a collecting device configured to collect gas from reactants produced by the reaction by being connected to the discharging device. The system may capture hydrogen from a reactant produced by the reaction of the rock sample in the main reacting device, in the collecting device.

A method of testing an air sample and/or testing equipment may comprise introducing aerosolized sample particles into an air flow to create sample air upstream from an air quality sampling device. The method may include introducing the sample air to an offset sample inlet of a bell cap inlet adaptor coupled to a sample tube. The method may include merging at least a portion of the introduced sample air with axially flowing air with little to no turbulence based on the geometry of the bell cap inlet adaptor and/or a containment cavity. The method may include introducing at least a portion of the sample air into the sample tube. Next, a test of at least one of the quality of the sample air and/or the functionality of the bell cap inlet may be performed.

A method for a multistep analysis of a measuring program of a portable gas measuring device includes performing a factory setting of the portable gas measuring device, connecting a container having a known gas standard and performing a reference measurement, wherein a multidimensional reference measurement is recorded, selecting a measuring program for target materials from a list on the device, performing a measurement on a sample in dependence on the selected measuring program, wherein a multidimensional measured variable is recorded, automatically performing an analysis to identify at least one of the one or more target materials in the sample and the respective concentrations thereof, wherein the analysis is based on the multidimensional measured variable from the measurement on the sample, the multidimensional reference measurement for the gas standard, the values for the plurality of target materials or measuring programs, and the factory setting for the portable gas measuring device.

Provided is an analysis device capable of obtaining sufficient sensitivity to a gas phase component, which is the analysis target, by a mass spectrometer even when a reactive gas is used as a carrier gas in evolved gas analysis. An analysis device 1 includes a heating device 3, a first carrier gas introduction device 4, a connecting conduit 5, a capillary tube 6, an oven 2, a mass spectrometer 7, and a second carrier gas introduction device 8. The second carrier gas introduction device 8 is configured to introduce helium, hydrogen and/or nitrogen into the connecting conduit 5.

A method of testing an air sample and/or testing equipment may comprise introducing aerosolized sample particles into an air flow to create sample air upstream from an air quality sampling device. The method may include introducing the sample air to an offset sample inlet of a bell cap inlet adaptor coupled to a sample tube. The method may include merging at least a portion of the introduced sample air with axially flowing air with little to no turbulence based on the geometry of the bell cap inlet adaptor and/or a containment cavity. The method may include introducing at least a portion of the sample air into the sample tube. Next, a test of at least one of the quality of the sample air and/or the functionality of the bell cap inlet may be performed.

A method of testing an air sample and/or testing equipment may comprise introducing aerosolized sample particles into an air flow to create sample air upstream from an air quality sampling device. The method may include introducing the sample air to an offset sample inlet of a bell cap inlet adaptor coupled to a sample tube. The method may include merging at least a portion of the introduced sample air with axially flowing air with little to no turbulence based on the geometry of the bell cap inlet adaptor and/or a containment cavity. The method may include introducing at least a portion of the sample air into the sample tube. Next, a test of at least one of the quality of the sample air and/or the functionality of the bell cap inlet may be performed.

A self-contained mobile apparatus which replicates the evaluation of scents, fragrances, aromas and odors in controlled and home environments. The apparatus simulates various stages of the consumer experience and has adjustable settings for dosing, air flow, and room size. The scented compound sample is placed within a cabinet having an enclosed sample chamber which is connected to an upward facing sample tube. An air fan is mounted within the sample chamber which circulates and controls sample air flow upward to a testing station wherein the sample air flow is tested for the identification and the concentration of the scent contained therein. A return air chamber and filter are mounted below the testing station. The filtered return air is controlled downward by a return air blower to provide an exhaust out through the bottom of the apparatus.

Devices and methods for detecting an analyte in a gas involve the use of plasmonic excitation of a nanostructured sensing element that is tuned to absorb at a narrow bandwidth specific for light absorbed by the analyte. The sensing element can be used as a capacitive or inductive element in a circuit.