Wang N, Liang W, Qi P
Department of Chemistry, Shandong University, Jinan, 250100, People's Republic of China.
Talanta. 1993 Jun;40(6):897-9. doi: 10.1016/0039-9140(93)80048-v.
A method is proposed for the simultaneous determination of copper and nickel by third-derivative spectrophotometry based on the absorption spectra of their complexes with cyanide ion in the ultraviolet range. The method allows the determination of 0.55-5.8 mug/ml of copper and 0.55-6.8 mug/ml of nickel. The relative standard deviation for 11 determinations of 1.5 mul/ml of copper and nickel were 0.78 and 0.72%, respectively. The detection limits were 0.10,mug/ml for nickel and 0.13 mug/ml for copper. The method has been applied to direct determination of copper and nickel in iron alloys and an aluminium alloy without any separation.
提出了一种基于铜和镍与氰离子在紫外区形成的配合物的吸收光谱，用三阶导数分光光度法同时测定铜和镍的方法。该方法可测定0.55 - 5.8μg/ml的铜和0.55 - 6.8μg/ml的镍。对1.5μg/ml的铜和镍进行11次测定的相对标准偏差分别为0.78%和0.72%。镍的检测限为0.10μg/ml，铜的检测限为0.13μg/ml。该方法已应用于铁合金和铝合金中铜和镍的直接测定，无需任何分离。
