【摘要】 采用目标因子分析技术与导数光度法相结合，同时测定镍、铜、锌。用ＰＡＲ作显色剂，三种离子在一阶导数光谱最大吸收波长处的摩尔吸光系数分别为３．８×１０￣５，２．７×１０￣５和５．５×１０￣５Ｌ·ｍｏｌ￣（－１）·ｃｍ￣（－１）比基本光谱最大吸收波长处的摩尔吸光系数分别提高５．８、７．１和５．７倍。用于人工合成样的分析，结果良好。更多还原

【Abstract】 n this paper,the factor analysis deriva-tive spectrophotometry method is describedfor simultaneous determination of Ni,Cu, Znwith4-(2- pyridylazo)-resorcinol(PAR)asthe colour reagent.The method offers theadvantages of factor analysis and derivativespectrophotometry. The first derivative mo-lar absorptivities of Ni,Cu and Zn are 3.8×10￣5,2.7 × 10￣5 and 5.5 × 10￣5L, mol￣(-1)·cm￣(-1),respectively,and are 5.8,7.1 and 5.7 timesthose by conventional spectrophotometry re-spectively. The results of determination ofsynthetic samples are very satisfactory.更多还原