Conversion of nitrogen dioxide (NO
View Patent ↗Various systems, devices, NO 2 absorbents, NO 2 scavengers and NO 2 recuperator for generating nitric oxide are disclosed herein. According to one embodiment, an apparatus for converting nitrogen dioxide to nitric oxide can include a receptacle including an inlet, an outlet, a surface-active material coated with an aqueous solution of ascorbic acid and an absorbent wherein the inlet is configured to receive a gas flow and fluidly communicate the gas flow to the outlet through the surface-active material and the absorbent such that nitrogen dioxide in the gas flow is converted to nitric oxide.
1. A method of sampling NO and NO 2 gas in a NO delivery system comprising
obtaining a sample of gas from the NO delivery system, wherein the gas includes nitric oxide and oxygen;
diluting the sample of gas no more than by 50% with air to reduce the concentration of nitric oxide and oxygen in the sample of gas; and
measuring the amount of NO and NO 2 gas in the sample with a gas analyzer.
2. The method of claim 1 , wherein the sample of gas is diluted with air from a hospital room.
3. The method of claim 1 , wherein the sample of gas is diluted with air from a wall.