Departament de Química Analítica. Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028, Barcelona, Spain.
Anal Bioanal Chem. 2010 Feb;396(3):1365-9. doi: 10.1007/s00216-009-3294-7. Epub 2009 Nov 24.
A commercially available screen-printed carbon electrode coated with an ex situ deposited bismuth film (BiSPCE) has been applied to the determination of Pb(II) and Zn(II) ions in tap water (Barcelona water distribution network) by means of stripping voltammetry (SV) and stripping chronopotentiometry (SCP). A good reproducibility of the measurements and a satisfactory agreement between SV and SCP data were observed for both heavy metal ions. Although, in principle, the procedure could be also suited to the determination of Cd(II), this species was not detected. The results were also consistent with the routine ICP-OES measurements of the water distribution company, thus confirming the potential usefulness of such BiSPCE disposable devices for the analysis of heavy metals in natural waters.
一种市售的丝网印刷碳电极，表面涂有原位沉积的铋膜（BiSPCE），已应用于通过溶出伏安法（SV）和溶出计时电位法（SCP）测定自来水中的 Pb(II) 和 Zn(II) 离子（巴塞罗那配水网络）。对于两种重金属离子，测量的重现性都很好，SV 和 SCP 数据之间的一致性也令人满意。尽管该方法原则上也适用于 Cd(II) 的测定，但未检测到该物质。结果与水分配公司的常规 ICP-OES 测量结果一致，从而证实了这种 BiSPCE 一次性设备在天然水中重金属分析中的潜在有用性。
