【摘要】 在ｐＨ５．０的ＨＯＡｃ－ＮａＯＡｃ缓冲溶液中，当有０．１０％ＳＬＳ存在时，Ａｇ（Ｉ）与ＱＡＲＨ形成１：１络合物，λ＿（ｍａｘ）为５３５ｎｍ，ε为１．０５×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１），Ａｇ（Ｉ）含量在０．００５～１．００μｇ／ｍＬ范围内服从Ｂｅｅｒ定律，稳定常数为１．７８×１０￣（１５）．所提出的方法用于精铜矿中微量银的测定，结果满意更多还原

【Abstract】 In a pH 5.0 buffer solution containing 0.10%SLS,silver(I) forms a redcomplex with QARH,the molar absorptivity being 1.05×10￣5L·mol￣(-1)·cm￣(-1) at 535nm.In the range of silver(I)concentration from 0.005 to 1.00μg/mL,the Beer’s law hasbeen obeyed.The proposed method has been used to determine microamount of silver inore samples and tl1e results are satisfactory.更多还原