Abstract: The invention relates to a device (1) for detecting an analyte in a gas mixture or a liquid, comprising: (a) a polymer sorption filter (2) configured to separate methanol from ethanol; and/or to separate hydrogen and/or methane from interferants; and (b) means configured to detect (4) at least one of methanol, ethanol, hydrogen and methane. Furthermore, described is a method for detecting an analyte using the device and the use of the device.

Abstract: An analyzer for detection of a target compound in a complex gas mixture in the gas phase includes a detector for detecting the target compound and further has a sensing cavity. The detector is arranged in the sensing cavity. The analyzer also has a separate first membrane that is equipped to close the cavity and simplifies the composition of the complex gas mixture into a first gas mixture, wherein the first gas mixture includes the first target compound and wherein the first membrane is equipped to let the first gas mixture traverse through the first membrane into the sensing cavity. The detector is equipped to detect the first target compound.

Abstract: Method of producing a gas sensor includes positioning a sensor substrate in a flame spray pyrolysis apparatus, generating an aerosol phase with sensing material nanoparticles by flame spray pyrolysis of a precursor substance, depositing the sensing material particles contained in the aerosol, in particular nanoparticles of the sensing material, onto the sensor substrate directly from the aerosol phase to form a porous sensing layer on the sensor substrate.

Abstract: The invention relates to a method of producing a gas sensor comprising the steps of a. Positioning a sensor substrate (7) in a flame spray pyrolysis apparatus (1); b. Generating an aerosol phase comprising sensing material nanoparticles by flame spray pyrolysis (FSP) of a precursor substance; c. Depositing the sensing material particles contained in the aerosol, in particular nanoparticles of the sensing material, onto the sensor substrate (7) directly from the aerosol phase to form a porous sensing layer (15).

Abstract: Described is a method for the production of pure or mixed metal oxides, wherein at least one metal precursor that is a metal carboxylate with a mean carbon value per carboxylate group of at least 3, e.g. the 2-ethyl hexanoic acid salt, is formed into droplets and e.g. flame oxidized. The method is performed at viscosities prior to droplet formation of usually less than 40 mPa s, obtained by heating and/or addition of one or more low viscosity solvents with adequately high enthalpy.

Abstract: The present invention relates to dental composites comprising at least one nanoparticulate mixed oxide (a) of SiO2 with X-ray-opaque metal oxides of one or more elements selected from the group consisting of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu which has been prepared by flame spraying.