“…3,4 Therefore, it is important for environmental protection and human health to establish a Ag + detection method, which has high sensitivity, high selectivity and low cost. At present, the methods of measuring Ag + mainly include atomic absorption spectrometry, 5,6 voltammetry, 7,8 inductively coupled plasma atomic emission spectrometry, 9,10 inductively coupled plasma mass spectrometry, 11,12 ion selective electrode methods, 3,4 fluorescence methods, [13][14][15][16] colorimetric methods 17,18 and surface plasma resonance. 19,20 Among them, atomic absorption spectrometry is suitable for determination of ultratrace silver 5 in water environments with a detection limit of 1.2 ng L 21 .…”