混合液中Ni(Ⅱ)和Co(Ⅱ)的快速测定与应用

Rapid determination and application of Ni(Ⅱ) and Co(Ⅱ)in liquid mixture

采用分光光度法测定混合液中的Ni2+和Co2+质量浓度,考察了Ni2+和Co2+测定及相互的干扰影响,并将分光光度法应用于分离过程的质量浓度分析。结果表明:分光光度法可以在720 nm和510 nm下分别快速测定混合液中的高质量浓度Ni2+和Co2+,720 nm下Co2+不影响Ni2+的测定,510 nm下Ni2+对Co2+的测定影响呈线性;分光光度法分析完全达到分离效果测定的需要。

The mass concentrations of Ni^2＋ and Co^2＋ in liquid mixture were determined with spectrophotometry. The determination and the interference impacting each other of cobalt and nickel were inspected. This methods has been applied in mass concentrations analysis of separation process. The results indicate that the content of high concentration Ni^2＋ under 720 nm and the content of high mass concentrations Co^2＋ under 510 nm in liquid mixture can be rapidly determined with spectrophotometry; Co^2＋ has no interference to Ni^2＋ determination under 720 nm; Ni^2＋ has linear interference to Co^2＋ determination under 510 nm; this analysis method satisfies the needs of the determination of separation effect.