正三辛胺萃取－5－Br－PADAP－OP显色体系光度法测定铜

Determination of Copper with 5-Br-PADAP-OP Coloured System by Trioctylamine Extraction-Spectrophotometry

采用５－Ｂｒ－ＰＡＤＡＰ－ＯＰ显色体系测定铜，考查了测定条件。以正三辛胺萃取分离干扰高子，考查了萃取分离条中。人工合成样品回收率１００．８％，铝合金标样测定误差＜－２．２％，人发分析结果的相对标准偏差＜４．０％。

Br-PADAP-OP coloured system is used to determine copper. The meassuring conditions are researched. Trioctylamine is used to entract and seperate from interference ions. The conditions of extracting and seperating from interference ions are studied. The recovery of synthetic sample is 100. 8%. The relative error of determining results for standard samples of aluminium alloy are less than -2. 2%. The relative standard deviation of analytical results for human hair are less than 4. 0%.