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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. shu

Flow-injection Chemiluminescence Sensor for Determination of Lead(Ⅱ) in Gasoline

QU Peng ^a,b,, ,
WEI Min ^a ,
LI Bao-Xin ^b ,
ZHANG Zhu-Jun ^b

1.
a Department of Chemistry, Shangqiu Normal College, Shangqiu 476000;
2.
b School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an 710062

Corresponding author: QU Peng,
Received Date: 26 March 2007
Available Online: 4 July 2007
Fund Project: 河南省自然科学基金项目(0511022300) (0511022300)河南省教育厅自然科学基金项目(200410483002) (200410483002)

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.
- flow injection,
- chemiluminescence sensor,
- lead
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