Fast and accurate determination of persistent organic pollutants (POPs) plays a crucial role in addressing concerns related to public security and environmental safety. Herein, a unique thin film based solid phase microextraction (denoted as TF-SPME) method was reported and used for on-site analysis of POPs via loading the TFs into a homemade sampling device and equipped on a drone, which can load up to 6 pieces of TFs at the same time. The parallel 6 pieces of TFs offered significant advantages in terms of efficiency, accuracy, cost-effectiveness and comparability of sampling. The detection limit for polychlorinated biphenyls and polyaromatic hydrocarbons was as low as 0.03 ng L−1, far below the regulatory thresholds for drinking water prescribed by the United States Environmental Protection Agency. The standard deviations were ranged between 2.7 % and 9.9 %, showcasing its remarkable precision on POPs analysis. Then, by facilely equipping TF-SPME on a drone, remotely controlled sampling and on-site analysis in real water samples was realized. The concentrations were determined to be from 0.12 ng L−1 to 1.01 ng L−1 for PCBs and 0.53 ng L−1 to 19.93 ng L−1 for PAHs in the river water of Guangzhou downtown area. This study demonstrates the possibility of practical monitoring POPs with constructing novel sampling device and hopefully expands the toolbox for remote analysis of potential chemotoxicity and biotoxicity samples.

中文翻译：

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通过自制薄膜设备对持久性有机污染物进行远程采样


快速、准确地测定持久性有机污染物 （POP） 在解决与公共安全和环境安全相关的问题方面起着至关重要的作用。在此，报道了一种独特的基于薄膜的固相微萃取（表示为 TF-SPME）方法，并通过将 TFs 加载到自制采样装置中并配备在无人机上来用于 POPs 的现场分析，无人机最多可同时加载 6 个 TFs。并联的 6 个 TF 在效率、准确性、成本效益和采样可比性方面具有显着优势。多氯联苯和多环芳烃的检测限低至 0.03 ng L-1，远低于美国环境保护署规定的饮用水监管阈值。标准偏差范围在 2.7 % 到 9.9 % 之间，展示了其在 POPs 分析方面的卓越精度。然后，通过在无人机上方便地配备 TF-SPME，实现了对真实水样的远程控制采样和现场分析。确定广州市中心河水中 PCB 的浓度为 0.12 ng L-1 至 1.01 ng L-1，多环芳烃的浓度为 0.53 ng L-1 至 19.93 ng L-1。本研究证明了通过构建新型采样装置来实际监测 POP 的可能性，并希望扩展远程分析潜在化学毒性和生物毒性样品的工具箱。