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二安替比林甲烷与金和银离子形成的络合物在HCl-H_3PO_4-H_2SO_4混合低酸度中可溶于甲基异丁基甲酮而被近于定量地萃取,将萃取有机相直接喷雾于空气—乙炔火焰中进行金和银的原子吸收连续测定,是行之有效地准确方法。试验了四十余种元素的离子对萃取金和银的影响,消除和抑制了碱金属、碱土金属、铁、铜、钨、钼、锑等元素的干扰,因而提高了测定金和银的准确度.方法适用于铜精矿和地质样品中微量金和银的测定。可测定0.05克/吨以上的金阳0.01克/吨以上的银,变动系数金为0.06-3.85%和银为0.71-2.47%。
The complex of diantipyrine methane with gold and silver ions is soluble in methyl isobutyl ketone in a low acidity of HCl-H 3 PO 4 -H 2 SO 4 mixed with nearly quantitative extraction, and the extracted organic phase is sprayed directly onto the air - acetylene flame flame atomic absorption of gold and silver continuous determination of the method is an effective and accurate method. The effect of ions of more than 40 elements on gold and silver extraction was tested, and the interference of alkali metals, alkaline earth metals, iron, copper, tungsten, molybdenum, antimony and other elements was eliminated and suppressed, thus improving the accuracy of determining gold and silver Degree.The method is suitable for the determination of trace gold and silver in copper concentrates and geological samples. It can measure 0.01g / tonne above 0.05g / t Jinyang, the coefficient of variation gold is 0.06-3.85% and silver is 0.71-2.47%.