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研讨了流动注射在线液 -液萃取火焰原子吸收光谱法测定地表水中痕量铜的分析方法。采用 A PDC为螯合剂 ,MIBK在线萃取后注入原子吸收光谱仪测定。其相对标准偏差 (RSD)为 3.5 % ;检出限 (3σ)为9.11× 10 - 2 μg· L- 1 ,加标回收率为 95 %— 10 3%。
The method for the determination of trace copper in surface water by flow injection on-line liquid-liquid extraction and flame atomic absorption spectrometry was discussed. Using A PDC as a chelating agent, MIBK was injected into the atomic absorption spectrometer after on-line extraction. The relative standard deviation (RSD) was 3.5%. The detection limit (3σ) was 9.11 × 10-2 μg · L-1. The recoveries were 95% -103%.