Determination of trace cobalt（Ⅱ） in waste waters by microemulsion-luminol-hydrogen peroxide-cobalt（Ⅱ）chemiluminescence method
YAO Po1, LIU Juan2, LU Chen-chen3, LI Shao-qing3
1. Shandong Academy of Environmental Science， Jinan 250013, China;2. CNOOC Shandong Chemical Engineering Co., Ltd., Jinan 250013, China；3. School of Environmental Science and Engineering, Chang'an University, Xi'an 710064, China
Abstract：Based on the stabilization, sensitization and solubilization effect of microemulsion, the determination of cobalt （Ⅱ） by chemiluminesence method with microemulsion-luminol-hydrogen peroxide-Co （Ⅱ） system was established. This method could be used to effectively determine Co（Ⅱ） in the range of 1×10-9-1×10-6 mg/mL with detection limit of 9.15×10-10 mg/mL. The method has been applied to the determination of trace cobalt （Ⅱ） in pharmaceutical waste water samples. The results were consistent with those obtained by flame atomic absorption spectrometry, and the relative standard deviations (RSD, n=5) was 1.0 %-2.5 %.
姚坡，刘娟，鲁琛琛，李绍卿. 微乳液-鲁米诺-H2O2-钴（Ⅱ）化学发光法测定废水中痕量钴（Ⅱ）[J]. 冶金分析, 2011, 31(6): 62-65.
YAO Po, LIU Juan, LU Chen-chen, LI Shao-qing. Determination of trace cobalt（Ⅱ） in waste waters by microemulsion-luminol-hydrogen peroxide-cobalt（Ⅱ）chemiluminescence method. , 2011, 31(6): 62-65.
