“…In the case of In(III), analytical methods for trace determination include ETAAS [ 30 , 45 , 49 , 50 , 51 , 52 , 53 , 54 ], FAAS [ 27 , 55 , 56 ], ICP-OES [ 57 , 58 , 59 , 60 ] and ICP-MS [ 61 , 62 , 63 ]. To a lesser extent, because they do not achieve sufficient sensitivity, Vis-UV molecular absorption spectrometry [ 46 , 47 , 64 , 65 , 66 , 67 , 68 ] and electrochemical methods are used [ 40 , 41 ].…”