NANOMISENE Laboratory LR16CRMN01, Center for Research on Microelectronics and Nanotechnology of Sousse, Technopole of Sousse, B.P334, 4054, Sahloul Sousse, Tunisia.
Department of Chemical Science and Technologies, University of Rome Tor Vergata, Via della Ricerca Scientifica, 00133, Rome, Italy.
Talanta. 2020 Aug 15;216:120924. doi: 10.1016/j.talanta.2020.120924. Epub 2020 Mar 14.
Bisphenol A is one the most relevant endocrine disruptors for its toxicity and ubiquity in the environment, being largely employed as raw material for manufacturing processes of a wide number of compounds. Furthermore, bisphenol A is released in the drinking water when plastic-based bottles are incorrectly transported under sunlight, delivering contaminated drinking water. For the health of human beings and the environment, rapid and on site detection of bisphenol A in drinking water is an important issue. Herein, we report a novel and cost-effective printed electrochemical sensor for an enzymatic-free bisphenol A detection. This sensor encompasses the entire electrochemical cell printed on filter paper and the reagents for the measurement loaded in the cellulose fiber network, for delivering a reagent-free analytical tool. The working electrode was printed using ink modified with carbon black, a cost effective nanomaterial for sensitive and sustainable bisphenol A determination. Several parameters including pH, frequency, and amplitude were optimized allowing for a detection limit of 0.03 μM with two linear ranges 0.1-0.9 μM and 1 μM-50 μM, using square wave voltammetry as electrochemical technique. The satisfactory recovery values found in river and drinking water samples demonstrated the suitability of this sensor for screening analyses in water samples. These results revealed the attractiveness of this paper-based device thanks to the synergic combination of paper and carbon black as cost-effective materials.
双酚 A 是一种毒性较大且在环境中普遍存在的内分泌干扰物，它被大量用作制造多种化合物的原材料。此外，当塑料瓶在阳光直射下不正确运输时，双酚 A 会释放到饮用水中，从而提供受污染的饮用水。为了人类健康和环境安全，快速现场检测饮用水中的双酚 A 是一个重要问题。在此，我们报道了一种新颖且具有成本效益的印刷电化学传感器，用于无酶检测双酚 A。该传感器包括整个电化学电池印刷在滤纸上，以及测量用试剂负载在纤维素纤维网络中，提供了一种无试剂的分析工具。工作电极使用经过碳黑修饰的油墨进行印刷，碳黑是一种经济实惠的纳米材料，可用于灵敏和可持续的双酚 A 测定。优化了包括 pH 值、频率和幅度在内的多个参数，使用方波伏安法作为电化学技术，可实现 0.03 μM 的检测限，具有 0.1-0.9 μM 和 1 μM-50 μM 两个线性范围。在河流和饮用水样本中的满意回收率值表明，该传感器适用于水样的筛选分析。这些结果表明，由于纸和碳黑作为具有成本效益的材料的协同组合，这种基于纸张的设备具有吸引力。
