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本文研究了在较宽的PH范围内以PAN-Triton X-100吸光光度法直接测定铜合金中钴,用草酸、柠檬酸、硫脲掩蔽一定量的铁、镍、铜,发色后用盐酸分解法消除有关元素的干扰。本法简单、准确、快速、有较高的灵敏度(对钴ε_(580nm)=2.7×10~4)。由于在配制非离子型表面活性剂中加入了十二烷基磺酸钠后,便显色溶液具有不易沾附比色皿、便于洗涤的特点。
In this paper, we studied the direct determination of cobalt in the copper alloy by PAN-Triton X-100 spectrophotometry in a wide range of pH, masked a certain amount of iron, nickel and copper with oxalic acid, citric acid and thiourea, Decomposition method to eliminate the interference of elements. The method is simple, accurate, rapid and has high sensitivity (for cobalt ε_ (580nm) = 2.7 × 10 ~ 4). Due to the preparation of non-ionic surfactant added sodium dodecyl sulfate, then the color solution is not easy to adhere to the cuvette, easy to wash.