纳米塑料检测的绿色方法:SERS使用未经处理的过纸用于聚乙烯纳米塑料
Boonphop Chaisrikhwun1,2, Mary Jane Dacillo Balani1,2,3, Sanong Ekgasit1,2
1Sensor Research Unit (SRU), Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand. prompong.p@chula.ac.th.
The Analyst
|July 16, 2024
概括
本研究介绍了一种绿色表面增强拉曼光谱 (SERS) 方法,用于检测水中的纳米塑料 (NPL). 该方法使用过纸和银纳米粒子来检测高灵敏度的聚乙烯纳米圈 (PSNSs).
科学领域:
- 环境科学 环境科学
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
背景情况:
- 纳米塑料 (NPL) 污染对环境可持续性和人类健康构成重大风险.
- 由于当前的方法和仪器的局限性,检测不良贷款是具有挑战性的.
- 开发敏感和可访问的NPL检测方法对于环境监测至关重要.
研究的目的:
- 开发一种"绿色"且具有成本效益的表面增强拉曼光谱 (SERS) 方法来检测纳米塑料 (NPL).
- 为了使纳米塑料 (NPLs) 的过和检测比传统的过孔大小小小.
- 在高灵敏度的水样中量化聚乙烯纳米圈 (PSNSs).
主要方法:
- 使用"绿色方法",使用未经处理的过纸和简单的注射器过装置.
- 采用准球形银纳米粒子 (AgNPs) 作为SERS活性基质用于信号增强.
- 加入了一个聚合剂,以促进NPL的过,并创建SERS热点.
主要成果:
- 在各种尺寸 (100800 nm) 中成功检测和量化聚乙烯纳米圈 (PSNSs).
- 对于水中的PSNS,达到0.31μg mL-1的检测极限 (LOD).
- 对盐,糖和表面活性剂等常见干扰物的证明方法稳定性.
- 验证了在饮用和自来水等现实世界样本中检测PSNS的方法.
结论:
- 开发的SERS协议为NPL检测提供了一种实用而敏感的方法.
- 这种"绿色方法"克服了过纳米塑料颗粒的局限性.
- 该方法对环境监测和评估水源中NPL污染具有前景.
相关概念视频
01:27Bioplastics
70
Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
70
01:28Microbial Bioremediation of Plastics
131
Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
131