According to an example aspect of the present invention, there is provided analyzing fault gas concentrations in a liquid. Concentration of at least one dissolved fault gas in the liquid is measured at least at two temperatures. Disturbing gas contribution is determined in at least one temperature on the basis of the fault gas concentration measurements. Fault gas concentrations are analyzed by compensating fault gas concentrations on the basis of the determined disturbing gas contribution.

A sensor layer system precursor (48) configured for forming a sensor layer system (26), the sensor layer system (26) being configured for absorbing hydrogen, includes a sensing layer precursor (42) made from a sensing layer precursor material that consists of: 20% by weight to 90% by weight palladium or palladium alloy, the palladium alloy consisting of palladium and at least one palladium alloy partner chosen from group VIIIB, wherein the amount-of-substance fraction of palladium is at least 85% and the sum of the amount-of-substance fractions of all palladium alloy partners contained in the palladium alloy is at most 15% with respect to the whole amount of substance of the palladium alloy, respectively; 10% by weight to 80% by weight sacrificial metal, the sacrificial metal being at least as electropositive as palladium and each palladium alloy partner and/or the sacrificial metal being selectively transformable by a chemical process into a soluble and/or ionic form; remainder unavoidable impurities; and optionally up to and including 30% by weight pore filler precursor metal that is transformable into a pore filler by means of a pore filler reaction component.

Systems, devices, and methods are described herein for a mobile scientific or measuring platform. In one aspect, a mobile scientific platform may include a vehicle having an electric energy source and a measuring device, such as a mass spectrometer, coupled to the electric energy source. An input line may be coupled to the measuring device and one or more sample collectors, for example, for obtaining gas samples. In some aspects, the input line may include a heating element configured to maintain a line temperature that is equal to or above the temperature of the samples collected, to reduce or prevent the formation of condensates in collected samples. In some aspects, the mobile scientific platform may run, or be switched to run, on electric, propone, compressed natural gas, or other similar fuel to enable the collection of gas samples free of (or having reduced levels of) vehicle caused contamination.

An electrochemical hydrogen cyanide sensor (1) comprises a housing (10) comprising an opening (2) allowing gas to enter the sensor (1); an electrolyte disposed within the housing (10); a plurality of electrodes in contact with the electrolyte within the housing (10), wherein the plurality of electrodes comprise a working electrode (5) and a counter electrode (7), and wherein the electrodes comprise a metal catalytic material; and a filter (3) operable to cover the opening (2) of the housing (10), and prevent hydrogen sulfide from reaching the electrodes, wherein the filter (3) comprises silver sulfate layered onto a polytetrafluoroethylene support material.

According to an example aspect of the present invention, there is provided analyzing fault gas concentrations in a liquid. Concentration of at least one dissolved fault gas in the liquid is measured at least at two temperatures. Disturbing gas contribution is determined in at least one temperature on the basis of the fault gas concentration measurements. Fault gas concentrations are analyzed by compensating fault gas concentrations on the basis of the determined disturbing gas contribution.

A microelectromechanical gas sensor including a fixed part, at least one suspended part in relation to fixed part, at least one sensitive zone carried on the suspended part, the sensitive zone being able to adsorb/absorb and desorb gaseous species or families of gaseous species, a heater for heating at least the sensitive zone, a detector for detecting the adsorption/absorption and desorption of gaseous species or families of gaseous species on the sensitive zone, a controller of controlling the heater so that the heating is applied to at least the sensitive zone with one or more temperature profiles ensuring the adsorption/absorption and desorption of the gaseous species in a controlled manner so as to obtain an individual desorption of each species or families of gaseous species.

The invention relates to an electrochemical gas sensing apparatus for sensing one or more analytes, such as NO.sub.2 and/or O.sub.3, in a sample gas and a method of using same. The apparatus uses Mn.sub.2O.sub.3 as a filter for ozone. The Mn.sub.2O.sub.3 may take the form of a powder which may be unmixed, mixed with various PTFE particles sizes, formed into a solid layer deposited onto a membrane and/or pretreated with NO.sub.2.

Systems, devices, and methods are described herein for a mobile scientific or measuring platform. In one aspect, a mobile scientific platform may include a vehicle having an electric energy source and a measuring device, such as a mass spectrometer, coupled to the electric energy source. An input line may be coupled to the measuring device and one or more sample collectors, for example, for obtaining gas samples. In some aspects, the input line may include a heating element configured to maintain a line temperature that is equal to or above the temperature of the samples collected, to reduce or prevent the formation of condensates in collected samples. In some aspects, the mobile scientific platform may run, or be switched to run, on electric, propone, compressed natural gas, or other similar fuel to enable the collection of gas samples free of (or having reduced levels of) vehicle caused contamination.

A hydrogen sensing device includes a multi-layered structure member. The multi-layered structure member includes a stack of alternatingly disposed magnetic layers and non-ferromagnetic layers. One of the magnetic layers is a topmost layer of the multi-layered structure member. The topmost layer includes a palladium-based material to detect hydrogen.

An illustrative example hydrogen concentration sensor includes a hydrogen chamber configured to isolate hydrogen within the hydrogen chamber from gas outside the hydrogen chamber. A hydrogen evolving electrode is configured to generate pure hydrogen within the hydrogen chamber. A reference electrode is situated to be exposed to pure hydrogen within the hydrogen chamber. A detection electrode associated with the reference electrode is situated to be exposed to gas outside the hydrogen chamber. The detection electrode is configured to provide an indication of a concentration of hydrogen in the gas outside the hydrogen chamber.