An Electrochemiluminescence-Activated Amphiphilic Perylene Diimide Probe: Enabling Highly Sensitive and Selective Detection of Polypropylene Nanoplastics in the Environment

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 5, 2025

Nanoplastic pollution has emerged as a significant issue in both the environmental and human health fields. However, developing highly sensitive approaches to promptly identify detect low concentrations of nanoplastics within complex systems remains considerable challenge. Here, we utilized amphiphilic perylene diimide (PDI-NH2) probe combination with electrochemiluminescence (ECL) for detection polypropylene (PP) nanoplastics. The PDI-NH2 shows remarkable enhancement ECL signal on PP aqueous solutions, presenting concentration-dependent response. This enables ultrasensitive specific solutions limit 0.948 mg·L-1. A series comprehensive experiments indicate that binds through electrostatic hydrophobic interactions. Moreover, isothermal titration calorimetry density functional theory (DFT) calculations further confirm can be attributed strong affinity between leads significantly high electron transfer rate. Additionally, it is notable proved its effectiveness detecting actual samples, opening up possibilities application monitoring assessing various industrial settings.

Language: Английский

Surface deoxygenation via electron beam/oxidant treatment: A novel pathway to reduce pollutant adsorption on aged microplastics

Journal of Environmental Management, Journal Year: 2025, Volume and Issue: 385, P. 125592 - 125592

Published: May 8, 2025

Language: Английский