To increase CO sensitivity, SnO2 sensors are doped with a palladium compoun
d. A procedure has been developed to determine quantitatively the ratio Pd/
SnO2. It is possible to derive the amount of impregnated Pd in the samples
using ICP-MS with a precision of approximately 5%. (C) 2000 Elsevier Scienc
e S.A. All rights reserved.