This follow-up paper by Sedlak, Sikula, Majzner, Vrnata, Fitl, Kopecky, Vyslouzil, and Handel, published in Sensors and Actuators B Chemical, examines adsorption-desorption noise in QCM gas sensors. The research focuses specifically on noise generated by random molecular binding and unbinding events at the quartz crystal microbalance surface during gas detection, analyzing how these stochastic adsorption-desorption processes produce low-frequency noise that limits detection sensitivity and analyzing strategies for minimizing this noise through surface chemistry optimization and signal processing.