DETERMINATION OF LEAD(II) BY FLOW-INJECTION ANALYSIS USING LUMINOL-POTASSIUM PERIODATE POST-CHEMILUMINESCENCE REACTION

作者：Chen Li; Li Nian Bing; Luo Hong Qun^*

来源：Instrumentation Science & Technology, 2010, 38(2): 151-164.

DOI：10.1080/10739141003591491

• flow injection
• lead(II)
• luminol
• post-chemiluminescence reaction
• potassium periodate

The post-chemiluminescence (PCL) phenomenon arising from the potassium periodate-luminol reaction induced by lead(II) was investigated. A strong PCL signal was observed when lead(II) was injected into the mixture of potassium periodate and luminol in a flow-cell. The influencing factors on the PCL intensity of the system were investigated. Under the optimum experimental conditions, the present method allowed the determination of lead(II) in the concentration range of 1.0x10-8 to 1.0x10-5mol/L and the detection limit for lead(II) was 2.3x10-10mol/L. The relative standard deviation was 3.2% for 11 replicate analyses of 1.0x10-6mol/L lead(II). Combined with cotton cellulose xanthate for separation, the proposed method was applied to the determination of lead(II) in real water samples with satisfactory results.

• 出版日期2010
• 单位西南大学