Department of Chemistry, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan.
Department of Chemistry, National Sun Yat-sen University, Kaohsiung, 80424, Taiwan; Regenerative Medicine and Cell Therapy Research Center, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan; School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 80708, Taiwan.
Anal Chim Acta. 2022 Mar 15;1198:339516. doi: 10.1016/j.aca.2022.339516. Epub 2022 Jan 20.
Plastic cups and bottles used for mineral water packaging may release plastic particles during continuous exposure to heat, light, or unfavorable chemical environments during transportation and storage. Surface-enhanced Raman spectroscopy (SERS) can be used to detect and analyze these plastic particles in a highly sensitive and quantitative manner. In this study, we used copper oxide/silver nanoparticles (CuO/Ag NPs) as the SERS substrate to monitor the release of plastic particles in packaged mineral water samples under irradiation as a function of exposure time. The lower detection limit for plastic particles using this CuO/Ag NP SERS system was 1.6 ng/mL. Our results showed that both plastic cups and bottles released particles under irradiation, however, the plastic cup samples degraded much more readily, with the particle concentration increasing considerably from 5.37 ± 0.11 ng/mL to 3751 ± 0.19 ng/ml over the total exposure time period of 240 min. In this study, we have demonstrated that SERS can provide a highly sensitive, rapid, and economical method for detecting plastic particle contamination caused by degradation of the plastic materials used in mineral water packaging.
用于矿泉水包装的塑料杯和瓶在运输和储存过程中持续暴露于热、光或不利的化学环境下，可能会释放出塑料颗粒。表面增强拉曼光谱（SERS）可用于以高灵敏度和定量方式检测和分析这些塑料颗粒。在这项研究中，我们使用氧化铜/银纳米粒子（CuO/Ag NPs）作为 SERS 基底，以监测在辐照下包装的矿泉水样品中随暴露时间而释放的塑料颗粒。该 CuO/Ag NP SERS 系统对塑料颗粒的检测下限为 1.6ng/mL。我们的结果表明，在辐照下，塑料杯和瓶均会释放颗粒，但塑料杯样品更容易降解，在 240 分钟的总暴露时间内，颗粒浓度从 5.37±0.11ng/mL 急剧增加到 3751±0.19ng/ml。在这项研究中，我们已经证明 SERS 可以提供一种高度敏感、快速和经济的方法，用于检测由矿泉水包装中所用塑料材料降解引起的塑料颗粒污染。
