Shanghai Key Lab of Chemical Assessment and Sustainability, School of Chemical Science and Engineering, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China.
Shanghai Tobacco Group Corporation Limited, Shanghai 200082, China.
Environ Pollut. 2020 Apr;259:113841. doi: 10.1016/j.envpol.2019.113841. Epub 2019 Dec 18.
Nicotine (Nic) exposed to the environment which comes from tobacco products is the main addictive agent and specific classes of hazardous compound that merit concern. In this study, we have established a fast and reliable method to achieve specific detection of Nic in natural nicotiana tabacum within 30 s through a miniaturized platform based on screen printed gold electrode (SPE). A simple electrochemical pretreatment mean was employed on gold surface that led to the exposure of Au (111) facet and a convenient sample pretreatment method was adopted to realize the extraction of Nic in tobacco. The present electrochemical sensor exhibits an ample range of sensing from 10 μg/g to 200 μg/g, which is able to compliance with tobacco industry testing standards of actual samples. Over 60 sampling points from different origins in China or other countries were performed with direct analysis using this method and satisfactory results have been obtained. The proposed approach was demonstrated to be a very promising platform for significantly improving analytical efficiency in laboratories as well as for monitoring the source reduction control of Nic in the environment.
环境中的尼古丁（Nic）来自烟草产品，是主要的成瘾剂和需要关注的特定危险化合物类别。在这项研究中，我们通过基于丝网印刷金电极（SPE）的微型化平台，建立了一种快速可靠的方法，在 30 秒内实现对天然烟草中尼古丁的特异性检测。我们采用了一种简单的电化学预处理方法，使金表面暴露于 Au（111）晶面，并采用方便的样品预处理方法来实现烟草中尼古丁的提取。该电化学传感器具有从 10μg/g 到 200μg/g 的广泛检测范围，能够符合实际样品的烟草行业测试标准。使用该方法直接分析了来自中国或其他国家的 60 多个不同来源的采样点，获得了令人满意的结果。该方法有望成为提高实验室分析效率以及监测环境中尼古丁来源减少控制的非常有前途的平台。
