【摘要】 在近中性溶液中,用Co（Ⅱ）—双硫腙—CCl₄萃取含铜溶液时,Cu（Ⅱ）定量（?）代（?）出Co（Ⅱ）（?）双硫腙中的Co（Ⅱ）,形成在435nm处具有最大吸收的Cu（Ⅱ）一双硫腙络合物,其表观摩尔吸光系数为1.25（?）⁴。当有大量NaF存在时,方法不仅克服了钴镍的干扰,还消除了基本铁对测定铜的影响。一般存在于钢铁中的合金元素不干扰测定。方法简便、快速。更多还原

【Abstract】 In extraction of copper with Co(II)-diphenylearbazone-CCl4 in teutial solution, Cu(II) can guantitatively substitute Co(II) contained in Co (II)-diphenylcarbazone,and form Cu(II)-di-phenylcarbazohr complex that has maximum absorption fit 435nm, with its apparent molar abso-rption coefficient being 1.25x104. When there exists a large quantity of NaF, the speetrophotom-etry can not only overcome the interference from cobalt and nickel, but can also eliminate the influence of base metal iron on the determination of copper, and the alloying elements that generally exist in iron and steel. The spectrophotomelry is a convenient and rapid method for determining copper in iron arid steel.更多还原