A gas membrane separation/array fluorescence visualization (GMS/AFV) device is developed by integrating hydrazine-based carbonized copolymer dots (PD-N₂H₄) for visual on-site analysis. The novel PD-N₂H₄ was synthesized using a “polymer template” approach, exhibiting strong blue fluorescence capable of visual sensing. The GMS/AFV device integrates sample preparation and detection all-in-one, consisting of a smartphone, a sample pretreatment system, and an optical system. In the detection procedure, the samples will be treated in the sample pretreatment system to create volatile gases. Therefore, any gas samples as well as solid and liquid samples that potentially produce volatile gases can be visually detected on-site by the device. H₂S was utilized as a model analyte to test the practicality of the GMS/AFV device. The entire analysis can be finished in 3 min, and the limit of detection of H₂S is as low as 3.4 μg/L. Surprisingly, the device is also capable of high-throughput sample detection, which can process 48 samples simultaneously in about 20 min. The device offers a quick, easy, cheap, and environmentally friendly way to analyze volatile gases, and it creates new opportunities for on-site detection of complex samples.

中文翻译：

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一种集样品制备和检测于一体的便携式阵列可视化设备，用于复杂样品的现场分析

通过集成肼基碳化共聚物点（PD-N ₂ H ₄）开发了气膜分离/阵列荧光可视化（GMS/AFV）装置，用于可视化现场分析。新型PD-N ₂ H ₄采用“聚合物模板”方法合成，表现出强烈的蓝色荧光，能够进行视觉传感。 GMS/AFV设备集样品制备和检测于一体，由智能手机、样品预处理系统和光学系统组成。在检测过程中，样品将在样品预处理系统中进行处理，产生挥发性气体。因此，任何可能产生挥发性气体的气体样品以及固体和液体样品都可以通过该设备在现场进行视觉检测。使用H ₂ S作为模型分析物来测试GMS/AFV装置的实用性。整个分析可在3 min内完成，H ₂ S的检出限低至3.4 μg/L。令人惊讶的是，该设备还能够进行高通量样品检测，可在约 20 分钟内同时处理 48 个样品。该设备提供了一种快速、简单、廉价且环保的挥发性气体分析方法，为复杂样品的现场检测创造了新的机会。