“…The correlation coefficients of the plottings for different processes shown in Table S1 support the assumption of first-order kinetics. First-order kinetics was also shown by many other reports involving the OS from various countries, such as Spain [40], Estonia [41], Morocco [33], Jordan [4,29], North Korea [3], USA [27,42], Parkistan [43], Turkey [42], etc [26,37]. Fig.…”