Sorbent based gas concentration monitor

A method comprising:

• receiving an indication of a first temperature of a sorbent, wherein the sorbent changes temperature based on a heat of adsorption of a target gas, wherein the sorbent is configured to passively absorb the target gas without heat being provided to the sorbent;
• determining a second temperature based on a second indication of the second temperature received from a thermistor coupled to a reference material, wherein the reference material comprises a same material as the sorbent that is encapsulated such that the reference material does not respond to the target gas;
• and
• determining, based at least in part on the indication of the first temperature of the sorbent and the second temperature of the reference material, a concentration of the target gas in a monitored environment in contact with the sorbent.

A method comprising:

• coupling a first thermistor and a second thermistor to a substrate;
• depositing a sorbent material on the substrate to couple the sorbent material to the first thermistor, wherein the sorbent material selectively adsorbs a target gas based on a concentration of the target gas in a monitored environment, and wherein the sorbent material is configured to passively absorb the target gas without heat being provided to the sorbent material;
• depositing a reference material on the substrate to couple the reference material to the second thermistor, wherein the reference material comprises a same material as the sorbent material that is encapsulated such that the reference material is not responsive to the target gas;
• and
• coupling the first thermistor and the second thermistor to a processing device.