Citation:
QU Peng, WEI Min, LI Bao-Xin, ZHANG Zhu-Jun. Flow-injection Chemiluminescence Sensor for Determination of Lead(Ⅱ) in Gasoline[J]. Chinese Journal of Applied Chemistry,
;2008, 25(3): 326-329.
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Chemiluminescence(CL) reagent luminol and permanganate were electrostatically immobilized on anion exchange resin separately,and a continuous flow sensor for the determination of lead ions combined with controlled-reagent-release technology in a FIA-CL-system was constructed.Lead ions were sensed by their enhancing effect on the follow-up CL reaction of luminol-KMnO4,which were eluted from the anion exchange column.The calibration curve was linear in the range of 5.0×10-8~1.0×10-5 g/mL,and the detection limit was 3×10-8 g/mL for lead(3σ).A complete analysis could be performed wthin 1 min with a relative standard deviation of 3.2%(2.0×10-6 g/mL,n=9).The sensor showed remarkable stability and could be easily reused over 300 times during 200 h.The sensor has successfully been applied to the determination of lead in gasoline samples.
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Keywords:
- flow injection,
- chemiluminescence sensor,
- lead
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