Local infrared spectral measurement system for the inspection of independent nano-plastic particles in water-based solutions

IF 5.8 2区环境科学与生态学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Environmental Science: Nano Pub Date : 2025-01-15 DOI:10.1039/d4en00379a

Ikuna Kanehara, Tatsuhiro Nagasaka, Hirofumi Seki, Sho Fujii, Tsuyoshi Kimura, Masaya Yamamoto, Tadao Tanabe

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Abstract

This study proposes a new method of bubble accumulation that enables the capture of individual nanoparticles diluted in water-based solvent and the evaluation of the shape and local infrared spectra of each independent nanoparticle. We have demonstrated this system using nanoparticles of defined size generated by nano-second laser ablation. Following a process of concentration of microbubbles, we have been able to analyze the material properties of individual nanoparticles by AFM-IR. The AFM images and IR spectra results indicate the presence of independent nanoparticles, and the IR spectra showed that the particle size is considered to decrease as the oxidation reaction progresses. This system approach for the concentration and analysis of nanoparticles can particularly contribute to bio adaptation research, since the identification of the physical properties of nanoparticles can provide a better understanding of the environmental/biological effects and relationships, the mechanism of nanoparticle aggregation and the interatomic forces between particles.

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用于检测水基溶液中独立纳米塑料粒子的局部红外光谱测量系统

本研究提出了一种新的气泡积累方法，该方法可以捕获在水基溶剂中稀释的单个纳米颗粒，并评估每个独立纳米颗粒的形状和局部红外光谱。我们已经用纳秒激光烧蚀产生的确定尺寸的纳米颗粒演示了这个系统。随着微泡的浓缩过程，我们已经能够通过AFM-IR分析单个纳米颗粒的材料特性。原子力显微镜（AFM）和红外光谱分析结果表明，随着氧化反应的进行，纳米颗粒的粒径逐渐减小。这种纳米粒子浓度和分析的系统方法特别有助于生物适应性研究，因为纳米粒子物理性质的鉴定可以更好地理解环境/生物效应和关系，纳米粒子聚集机制和粒子之间的原子相互作用。

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来源期刊

Environmental Science: Nano CHEMISTRY, MULTIDISCIPLINARY-ENVIRONMENTAL SCIENCES

CiteScore

12.20

自引率

5.50%

发文量

290

审稿时长

2.1 months

期刊介绍： Environmental Science: Nano serves as a comprehensive and high-impact peer-reviewed source of information on the design and demonstration of engineered nanomaterials for environment-based applications. It also covers the interactions between engineered, natural, and incidental nanomaterials with biological and environmental systems. This scope includes, but is not limited to, the following topic areas: Novel nanomaterial-based applications for water, air, soil, food, and energy sustainability Nanomaterial interactions with biological systems and nanotoxicology Environmental fate, reactivity, and transformations of nanoscale materials Nanoscale processes in the environment Sustainable nanotechnology including rational nanomaterial design, life cycle assessment, risk/benefit analysis