摘要
研究了三氮烯试剂 -铜 -OP乳化剂析相富集体系在Na2 B4O7-NaOH( pH10 2 )介质中 ,于 90± 1℃加热胶束溶液 ,保持 45min ,络合物即被OP乳化剂完全富集。富集液在 5 2 0nm处测定吸光度 ,铜含量在 0～ 3 0 μg/5 0mL范围内服从比尔定律 ,该法与一般光度法相比 ,灵敏度高 ,选择性好。用于铝合金样中铜的测定 ,结果满意。
A study on the phase separation system of triazene copper OP emulsifying agent was carried out. In the medium of Na 2B 4O 7 NaOH buffer at pH 10.2, the complex of triazene copper could be enriched in the phase of OP emulsifying agent, when heating at 90±1℃ for 45min in a boilling water bath. The absorption was measured at 530nm and Beer's law was obeyed in the range of 0～3.0μg Cu 2+ /50mL. The method was characteristic of high sensitivity and selectivity compared with that ordinary spectrophotometry. The method has been applied to determine trace copper in aluminium alloy with satisfactory results.
出处
《冶金分析》
CAS
CSCD
北大核心
2001年第2期4-6,共3页
Metallurgical Analysis
关键词
三氮烯试剂
铜
析相光度法
测定
铝合金
triazene reagent
copper
phase separation spectrophotometry
