文献类型：期刊文献

英文题名：Separation and Identification of Nanoplastics via a Two-Phase System Combined with Surface-Enhanced Raman Spectroscopy

作者：Liu, Yu[1,2];Lin, Liqian[1];Yang, Bing[1];Huang, Minhua[1];Huang, Xiaoxin[2];Chen, Xinxin[1];Dai, Zhenqing[1,2,3];Sun, Shengli[1];Yang, Yuqiang[3];Li, Chengyong[1,2,3,4]

机构：[1]Guangdong Ocean Univ, Sch Chem & Environm, Zhanjiang 524088, Peoples R China;[2]Guangdong Ocean Univ, Shenzhen Inst, Shenzhen 518108, Peoples R China;[3]Guangdong Ocean Univ, Guangdong Prov Key Lab Intelligent Equipment South, Zhanjiang 524088, Peoples R China;[4]Guangdong Ocean Univ, Guangdong Prov Observat & Res Stn Trop Ocean Envir, Zhanjiang 524088, Peoples R China

年份：2024

卷号：12

期号：4

起止页码：1595

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：SCI-EXPANDED(收录号：WOS:001153820400001)、、EI(收录号：20240415446044)、Scopus(收录号：2-s2.0-85183013083)、WOS

基金：This work was supported by the Project of Enhancing School with Innovation of Guangdong Ocean University (2020ZDZX2029, 2021ZDZX1015), Guangdong Basic and Applied Basic Research Foundation (2022B1515020091), Shenzhen Science and Technology Program (KCXFZ202002011011057, JCYJ20210324122606017, and GJHZ20210705142000003), and Training Programs of Innovation and Entrepreneurship for Undergraduates (CXXL2022181). We would like to thank the Analytical and Testing Center of Guangdong Ocean University for the Raman spectroscopic instrument.

语种：英文

外文关键词：nanoplastics; two-phase system; SERS; separation; identification

外文摘要：Nanoplastics, novel environmental pollutants widely dispersed, present challenges due to limited, dependable detection methods, particularly for trace levels. This study introduces a novel approach that integrates liquid-phase self-assembly nanoparticle technology with surface-enhanced Raman spectroscopy (SERS) for the precise detection of nanoplastics. Utilizing hydrophobic-lipophilic interactions and SERS technology, we developed silver nanoparticles (Ag NPs)@poly(methyl methacrylate) (PMMA) films (Ag NPs@PMMA films) for the efficient extraction and simultaneous detection of polystyrene (PS) and polyethylene terephthalate (PET) nanoplastics at extremely low concentrations (e.g., 10(-11) mg/mL for 20 nm PS nanoplastics and 10(-8) mg/mL for 70 nm PET nanoplastics). It also demonstrates a linear correlation between SERS intensity (y) and the logarithm of nanoplastics' concentration (lg c) at extremely low levels. This technique's applicability extends to real environmental samples, such as seawater, oysters, and bottled water, enabling both qualitative and quantitative detection of PS and PET nanoplastics. For example, it successfully identifies 1.23 x 10(-10) mg/mL PS nanoplastics in seawater samples and 8.61 x 10(-5) mg/mL PET nanoplastics in bottled-water samples. Overall, these findings provide a reliable basis for trace nanoplastic detection in the environment, addressing a pressing environmental concern.