S. Zabarnick et al., SILVER CORROSION AND SULFUR DETECTION USING A QUARTZ-CRYSTAL MICROBALANCE WITH SILVER ELECTRODE SURFACES, Industrial & engineering chemistry research, 35(8), 1996, pp. 2576-2580
A quartz crystal microbalance (QCM) with silver electrodes is used for
detection of sulfur and measurement of silver corrosion by sulfur in
jet fuels. It is found that the device responds very sensitively to el
emental sulfur by reaction at the silver surface, resulting in the for
mation of surface silver sulfide. It is also expected that the device
will respond to hydrogen sulfide. The response of the QCM is found to
depend on the fuel matrix, The presence of oxygen inhibits the surface
reaction, resulting in a lower mass accumulation. It is also found th
at the sulfur compounds which produce a response in this test are not
players in the formation of autoxidative surface deposition. It is sho
wn that the QCM response (surface mass per unit time) is proportional
to the concentration of elemental sulfur present in the fuel.