【摘要】 本文提出用硫代米氏酮(TMK)双波长分光光度法同时测定金和银的新方法。该法选择性。灵敏度及稳定性均较好,对Au(111)和Ag(1)的表观摩尔吸光系数分别为,同时在0—60.0μgAu/25ml和0—8.1μgAg/25ml范围内符合比耳定律。更多还原

【Abstract】 A new method for the dual-wevelength spectrophotometric determination of Au （Ⅲ） and Ag （Ⅰ） with Thio-Michler’s Ketone（TMK） has been developed. In the buffer solution of Na₂HPO₄-Hcit at PH3.2 and with the presence of Tween-60, a solube colored coordination compound can be formed.Based on this fact we simultaneously determined Au（Ⅲ）and Ag （Ⅰ） with dual-wavelength with the resalts of 509nm—484nm and495nm—585nm respectively.Beer’s law is abeyed within the range of 0.0—60.0μg au/25ml and 0.0—8.1μg Ag/25ml separately.the conditional molarabsorption coefficient is 5.74×10⁴ and is 1.11×10⁵更多还原