期刊
ELECTROANALYSIS
卷 24, 期 10, 页码 1995-2004出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201200190
关键词
Crown ether polyamide; Lead(II); Stripping voltammetry
资金
- European Social Fund Cristofor I. Simionescu Postdoctoral Fellowship Programme, Sectoral Operational Programme Human Resources Development [POSDRU/89/1.5/S/55216]
A siloxane-crown ether polyamide copolymer (PDMS-PA-DB18C6) was electrochemically investigated for fabrication of lead-sensitive electrodes for trace analysis in aqueous solutions. The PDMS-PA-DB18C6 electrodes were successfully evaluated for anodic stripping voltammetric determination of lead(II) as a promising alternative for the detection of lead at ppb levels. By a judicious choice of the deposition time, electrolyte concentration and pulse amplitude, good analytical performance of the developed sensor could be achieved, with a linear response in the range of 20700 ppb, when LOD of 3.5 ppb could be attained. This method showed a good degree of selectivity and sensitivity for lead, suitable for the determination of Pb2+ in wastewater sample.
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