A flow injection electrogenerated chemiluminescence method for the determination of uranium is described.Uranium(Ⅵ) was on line reduced to uranium(Ⅲ) by a constant potential electrolysis technique at the potential of-0.70 V(vs. Ag/AgCl electrode) using a self-made flow-through carbon electrolytic cell,then the produced uranium(Ⅲ) reacted with luminol in alkaline solution to produce chemiluminescence.The chemiluminescent intensity is linear with the concentration of uranium in the range 1.0×10-9-1.0×10-5 g/mL with a detection limit(3σ) of 2×10-10 g/mL.The relative standard deviation is 2.5% for 1.0×10-7 g/mL uranium in 13 replicated measurements.The method has been applied to the determination of uranium in coal ash samples. 【Keyword】：electrogenerated chemiluminescence;uranium;flow injection;coal ash;constant potential electrolysis
仪器信息网“仪友会”招募令
科学仪器品牌联合“仪器心得”征文活动
【生活中的仪器检测】有奖征文
LC-MS实验瓶颈的突破与优化
