 The researchers studied the effects of gold deposits on glassy carbon electrodes, GCEs. They found that these deposits can be used as catalysts, increasing the rate of oxidation of tetracycline by up to two times. Additionally, they were able to develop a volatometric method for detecting tetracycline levels in milk samples. This article was authored by LG Shaterova, A.V. Gidmina, V. Insiatkina, and others.