The present disclosure relates to a colorimetric aerosol detection device for detecting target compounds in an aerosol generated from an aerosol delivery device. The colorimetric aerosol detection device includes a tubular housing with a first open end (which can be configured to engage a mouthpiece of the aerosol delivery device) and a second open end (which may be configured as a mouthpiece) such that a stream of vapor can pass through the tubular housing in a direction from the first open end to the second open end. A colorimetric indicator material is located inside the tubular housing, and is configured to signal detection of a target compound in the vapor stream by a change in color visible to the user through a transparent or translucent portion of the tubular housing.

A battery includes a first power generating element including a first electrode layer and a first counter electrode layer, a first current collector that is in contact with the first electrode layer, a second current collector that is in contact with the first counter electrode layer, a first sealing portion that seals a gap between the first current collector and the second current collector, a first void disposed between the first sealing portion and the first power generating element, and a first gas detection unit that detects gas. The first gas detection unit detects the gas in the first void.

An apparatus is provided for sensing an analyte in a fluid. The apparatus includes a fluid collecting device configured to collect the fluid containing the analyte; a fluid input in fluid communication with the fluid collecting device configured to input the fluid containing the analyte into the fluid collecting device, an analyte interactant in fluid communication with the fluid collecting device, wherein the analyte interactant, when contacted by the analyte, reacts to cause a first change in thermal energy within the fluid collecting device; a modulator that causes a second change in thermal energy; a thermal sensing device comprising at least one pyroelectric device thermally coupled to the fluid collecting device to generate a first signal in response to at least one of the first change in thermal energy and the second change in thermal energy; a control device operatively coupled to the thermal sensing device and the modulator that generates a second signal, wherein the second signal comprises information useful in characterizing the analyte. A related method also is disclosed.

The present disclosure is directed to methods and systems for detecting a chemical substance. The methods and systems include using gas-solid phase chemistry to chemically and/or physically modify a substance of interest so that the substance can be vaporized and detected through an analysis of the substance.

A battery includes a first power generating element including a first electrode layer and a first counter electrode layer, a first current collector that is in contact with the first electrode layer, a second current collector that is in contact with the first counter electrode layer, a first sealing portion that seals a gap between the first current collector and the second current collector, a first void disposed between the first sealing portion and the first power generating element, and a first gas detection unit that detects gas. The first gas detection unit detects the gas in the first void.

A sensor has a transparent polymer aerogel, and sensing materials dispersed into the transparent, polymer aerogel, where the sensing materials change color in response to environmental conditions. A method of forming a sensor includes providing a substrate, forming a polymer aerogel layer on the substrate, and infusing the polymer aerogel layer with sensing molecules.

A method of collecting a fluid sample includes flowing the fluid sample into an isolating container, wherein the isolating container includes a reactant material; removing a component from the fluid sample by reacting the component with the reactant material; and collecting the fluid sample leaving the isolating container into a sample container.

In the field of monitoring air quality, and more specifically, the field of identification of the presence of gaseous chemical pollutants such as volatile organic compounds, in an enclosed environment, there is disclosed a system including: a substrate; a gaseous chemical pollutant sensor; and at least one colorimetric marker of a predetermined colour situated on the substrate.

The present disclosure relates to a colorimetric aerosol detection device for detecting target compounds in an aerosol generated from an aerosol delivery device. The colorimetric aerosol detection device includes a tubular housing with a first open end and a second open end such that a stream of vapor can pass through the tubular housing in a direction from the first end to the second end. The first open end is configured to engage a mouthpiece of the aerosol delivery device and the second open end is configured as a mouthpiece through which a user can draw a stream of vapor generated by the aerosol delivery device into the tubular housing by suction. A colorimetric indicator material is located inside the tubular housing configured to signal detection of a target compound in the vapor stream by a change in color visible to the user through a transparent or translucent portion of the tubular housing.

Methods and apparatus for the collection, transportation, and analysis of gas samples which may be required in various scientific, environmental, and natural resource contexts is provided. An isolating container for removing a component from a fluid sample includes a body defining a sampling chamber having a first end and a second end; a first valve assembly coupled to the first end; a reactant material positioned within the sampling chamber for reacting with the component; and a second valve assembly coupled to the second end, wherein the fluid sample enters the sampling chamber through the first valve assembly and exits through the second valve assembly.