|
| Determination of Lead, Cadmium, Zinc Using Antimony Electrode by Potentiometric Stripping Analysis |
| Received:August 22, 2011 Revised:September 03, 2011 |
| View Full Text View/Add Comment Download reader |
| DOI：10.3969/j.issn.2095-1035.2011.04.0004 |
| KeyWord:antimony electrode; potentiometric stripping analysis; zinc; cadmium; lead |
| Author | Institution |
| WEI Xiaoping |
桂林理工大学化学与生物工程学院，广西 桂林 |
| LIANG Qingmei |
桂林理工大学化学与生物工程学院，广西 桂林 |
| LI Jianping |
桂林理工大学化学与生物工程学院，广西 桂林 |
|
| Hits: 2867 |
| Download times: 2251 |
| Abstract: |
| Potentiometric stripping analysis method was proposed for determination of trace amounts of heavy metals( zinc, cadmium and lead) by use of antimony electrode as working electrode. The experimental conditions for simultaneous determination of zinc, cadmium and lead were optimized. In HAc-NaAc buffer solutions (pH=5.0), the sensitive potentiometric stripping peaks (dt/dE) of Zn2+、Cd2+、Pb2+ ions were obtained as -1.07, -0.70 and -0.52 V, respectively. With the deposition time of 60s, the potentiometric stripping peak value changed linearly with the ion concentrations in the range of 0~16 .0 μg/mL, 0~1.6 μg/mL and 0~0.08 μg/mL for zinc, cadmium and lead, respectively. The detection limit of Zn2+, Cd2+ and Pb2+ was 4, 0.3 and 0.03 μg/L, respectively. The method was applied to determine trace amounts of zinc, cadmium and lead in water samples with satisfactory results. |
| Close |
|
|
|