Semicontinuous monitoring of cadmium and lead with a screen-printed sensor modified by a membrane
Semicontinuous monitoring of cadmium and lead with a screen-printed sensor modified by a membrane
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DOI：
10.1002/elan.200603722
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发表时间：
2007-01-01
期刊：
影响因子：
3
通讯作者：
Potin-Gautier, Martine
中科院分区：
文献类型：
--
作者：
Betelu, Stephanie;Parat, Corinne;Potin-Gautier, Martine
在实验室评价了该传感器的分析性能，用于L-1级水样中Cd和Ph的半连续监测。研究了氧气、pH和搅拌对这些金属的伏安响应的影响。O-2的去除并不能改善峰值电流。反过来，为了避免扩散层中金属的贫化，搅拌似乎是必不可少的。也明确了在实验室实验中控制pH值和溶液析出的必要性。对自来水中的Cd和Ph进行了42h的半连续监测，结果表明传感器是半连续环境分析的理想工具。
The analytical performances of the developed sensor were evaluated in laboratory for the semicontinuous monitoring of Cd and Ph in water samples at mu g L-1 level. The effects of oxygen, pH, and stirring on the voltammetric response of these metals were investigated. The O-2 removal did not allow to improve the peak current. In return, stirring appeared indispensable to avoid the impoverishment of metals in the diffusion layer. The necessity to control the pH and the solution evolution in laboratory experiments was also clearly established. The semicontinuous monitoring of Cd and Ph was then performed for 42 h in tap water and demonstrated that sensor is a promised tool for semicontinuous environmental analyses.