论文标题
成像和鉴定单纳米塑料颗粒和团聚
Imaging and Identification of Single Nanoplastic Particles and Agglomerates
论文作者
论文摘要
目前，只能通过从可以检测到的塑料废料中推断出纳米塑性的程度。为了能够量化问题的全部范围，必须开发检测方法，该检测方法还可以识别小于1 $ $ $ m的粒子。在这里，我们采用表面增强的拉曼散射（SER）来形象并识别大小降低至100 nm的单纳米塑料颗粒。我们获得了在单个塑料粒子上测得的三个数量级以上的实验增强因子，而不是在浓度上平均。我们的结果有助于更好地理解和就纳米颗粒检测的SER，并为未来传感器的开发提供了重要的一步。
Currently the extent of nanoplastic in the environment can only be estimated by extrapolation from the plastic waste that can be detected. To be able to quantify the whole extent of the problem, detection methods have to be developed that can also identify particles that are smaller than 1 $μ$m. Here we employ surface-enhanced Raman scattering (SERS) to image and identify single nanoplastic particles down to 100 nm in size. We obtain an experimental enhancement factor of more than three orders of magnitude measured on a single plastic particle instead of averaging over a concentration. Our results contribute to the better understanding and employment of SERS for nanoparticle detection and present an important step for the development of future sensors.
