In this paper a new flow‐through cell for voltammetric determinations using screen printed electrodes is described. This cell is much simpler than one with similar performances described in a previous work. This new flow‐through cell has been coupled to a multisyringe flow injection system (MSFIA) and to a multiport selection valve allowing the online calibration using the standard addition method. The uses of the MSFIA, together with the small volume of the flow cell and the reduced surface area of the solid phase electrode (SPE) have considerably reduced the volume of reagents and samples to be used. This system has allowed obtaining similar or better detection limits than those obtained using other techniques and flow analysis devices such as SIA, FIA, LOV and microfluidic channels. Graphite ink has been used for the development of screen‐printed electrodes. The determination of Cd and Pb with ASV has been made through its co‐deposition with Bi. For this, Bi(III) solution and the sample were mixed in line. Due to the creation of a new Bi film in each voltammetric cycle, very well defined and reproducible peaks corresponding to Cd and Pb have been obtained. The use of Bi is one of the most important advantages of this system, since it is a recognized substitute for Hg, and its impact on the environment is much lower due to its reduced toxicity. The fact of being an automatic system, the low cost of its components, its simplicity and ease of handling, make it a system that could be useful for monitoring tasks in fieldwork, or measurements on board.

中文翻译：

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用于丝网印刷电极的新型流通池的构建

本文介绍了使用丝网印刷电极测定伏安的新型流通池。该单元比以前工作中描述的具有类似性能的单元简单得多。这种新的流通池已与多注射器流动注射系统（MSFIA）和多端口选择阀耦合，从而可以使用标准添加方法进行在线校准。MSFIA的使用，加上流通池的小体积和固相电极（SPE）表面积的减小，大大减少了所用试剂和样品的体积。与使用其他技术和流量分析设备（例如SIA，FIA，LOV和微流体通道）获得的检测限相比，该系统已获得了相似或更好的检测限。石墨油墨已用于丝网印刷电极的开发。ASV对Cd和Pb的测定是通过与Bi共沉积进行的。为此，将Bi（III）溶液和样品在线混合。由于在每个伏安循环中都会产生新的Bi膜，因此获得了非常清晰的可重现峰，分别对应于Cd和Pb。铋的使用是该系统最重要的优点之一，因为它是汞的公认替代品，并且由于其毒性降低，其对环境的影响要低得多。作为一个自动化系统，它的组件成本低，其简单性和易于处理的事实使它成为可用于监视野外作业或船上测量的系统。ASV中的Cd和Pb是通过与Bi共沉积而确定的。为此，将Bi（III）溶液和样品在线混合。由于在每个伏安循环中都会产生新的Bi膜，因此获得了非常清晰的可重现峰，分别对应于Cd和Pb。铋的使用是该系统最重要的优点之一，因为它是汞的公认替代品，并且由于其毒性降低，其对环境的影响要低得多。作为一个自动化系统，它的组件成本低，其简单性和易于处理的事实使它成为可用于监视野外作业或船上测量的系统。ASV对Cd和Pb的测定是通过与Bi共沉积进行的。为此，将Bi（III）溶液和样品在线混合。由于在每个伏安循环中都会产生新的Bi膜，因此获得了非常清晰的可重现峰，分别对应于Cd和Pb。铋的使用是该系统最重要的优点之一，因为它是汞的公认替代品，并且由于其毒性降低，其对环境的影响要低得多。作为一个自动化系统，它的组件成本低，其简单性和易于处理的事实使它成为可用于监视野外作业或船上测量的系统。获得了与Cd和Pb对应的非常清晰且可重现的峰。铋的使用是该系统最重要的优点之一，因为它是汞的公认替代品，并且由于其毒性降低，其对环境的影响要低得多。作为一个自动化系统，它的组件成本低，其简单性和易于处理的事实使它成为可用于监视野外作业或船上测量的系统。获得了与Cd和Pb对应的非常清晰且可重现的峰。铋的使用是该系统最重要的优点之一，因为它是汞的公认替代品，并且由于其毒性降低，其对环境的影响要低得多。作为一个自动化系统，它的组件成本低，其简单性和易于处理的事实使它成为可用于监视野外作业或船上测量的系统。