A system for collecting a biological sample from a passenger cabin includes a collector for collecting particulate samples positioned within at least one of a passenger cabin or a cabin air outflow flow path. A method for collecting particulates from cabin air includes capturing particulates in at least one of a passenger cabin or a cabin air outflow flow path with a collector for a period of time. The method includes removing the collector from at least one of the passenger cabin or air outflow flow path for testing. The method includes placing a clean collector into at least one of the passenger cabin or a cabin air outflow flow path for use during another period of time.

A method for collecting an aircraft cabin representative biological sample from an aircraft HEPA (high efficiency particulate air) filter including collecting a used HEPA filter after flight, transferring the HEPA filter to a remote location, processing the HEPA filter in order to remove an air sample, and concentrating the collected sample to be used on a pathogen identifying tester.

Disclosed is a sample pretreatment method of microextraction tube injection, comprising providing a capillary micro-extraction tube with extracting medium in it as an injector, passing a sample through the capillary micro-extraction tube, during which an analyte is extracted into an extracting medium inside the capillary micro-extraction tube; then, filling the capillary micro-extraction tube with an organic solvent and keeping the filling for a certain period of time, so that the extracted analyte is dissolved in the organic solvent inside the capillary micro-extraction tube to form an injection solution; finally, keeping one end of the capillary micro-extraction tube sealed and inserting the other end directly into an injection port of a gas chromatography, such that the injection solution is automatically ejected out from the capillary micro-extraction tube into the injection port.

A method for detecting concentration of organic particles (14), in particular viruses, with a determined target diameter in air (10) comprises organic and/or inorganic aerosol particles. Aerosol particles contained in the air (10) are bound in a fluid (40), so that said aerosol particles are contained as particles in the fluid (40). The fluid (40) with particles is exposed in measurement chamber (30) to a second light (B) fragmenting the organic particles and/or to an ultrasound (C) fragmenting the organic particles in the fluid (40). Before fragmentation of organic particles, a first light scattering of a first light (A) and after the fragmenting of organic particles, a second light scattering of the first light (A) on the fluid (40) are determined. Using difference between the first light scattering and the second light scatterings, the concentration of the organic particles (14) in the fluid (40) and thus in the air is determined.

Methods, apparatuses, and systems associated with aerosol collection devices (such as, but not limited to, breath-aerosol collector devices, breathalyzers) are provided. An example aerosol collection device includes a sample transfer adapter configured to receive a sample and a device body connected to the sample transfer adapter. In some examples, the device body defines a flow channel that guides the sample to a filter component, and the filter component contains a buffer solution.

A droplet generator includes a chamber including an enclosed space filled with gas having vapor, a tube extending through the chamber, a gas flow channel inside the tube, and a heater in the chamber. The tube includes a sidewall having an outer surface exposed to the enclosed space of the chamber, and an inner surface. The tube contains liquid. The heater is operable to change a phase of the liquid contained in the tube to vapor such that the vapor is provided into the enclosed space. A pressure in the enclosed space is higher than a pressure in the gas flow channel such that the vapor in the enclosed space flows to the gas flow channel by passing through the tube.

A passive sampling device is provided that is comprised of a member having a first surface and a second surface opposite the first surface and a hole through the member extending from the first surface to the second surface. An adsorbent material is positioned between two mesh members. The adsorbent material allows for efficient and selective removal of organic molecules, such as, for example, perfluoroalkyl substances.

A passive sampling device is provided that is comprised of a member having a first surface and a second surface opposite the first surface and a hole through the member extending from the first surface to the second surface. An adsorbent material is positioned between two mesh members. The adsorbent material allows for efficient and selective removal of organic molecules, such as, for example, perfluoroalkyl substances.

A chemical sensor includes a sensor element. The sensor element includes a sensitive film and a treatment material. Physical properties of the sensitive film vary as bonding of a target substance to the sensitive film. The sensor element is configured to detect the variation in the physical properties. The treatment material is configured to carry out a treatment onto the target substance before the target substance bonds to the sensitive film. The treatment enhances the variation in the physical properties as compared to a case without the treatment.

An aerosol collection system and method. The system includes a bio-aerosol delivery device configured to supply bioparticles in a gas stream, a moisture exchange device including a partition member coupled to the gas stream and configured to humidify or dehumidify the bioparticles in the gas stream, and an aerosol collection medium downstream from the moisture exchange device and configured to collect the bioparticles. The method includes delivering bioparticles in a gas stream, humidifying or dehumidifying the bioparticles in the gas stream by transport of water across a partition member and into a vapor phase of the gas stream, and collecting the bioparticles by a collection medium.