Figure 22.
Gas responses of tungsten oxide and zeolites modified tungsten oxide sensors to 100, 120, 140, 160, 180, 200 ppb NO2 in dry air at 350 °C.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.