Filter paper-based nanoplastics detection using surface-enhanced Raman scattering

Name: Balani, Mary Jane

Organization : Chulalongkorn University. Faculty of Science

Name: Sanong Ekgasit

Organization : Chulalongkorn University. Faculty of Science

Name: Prompong Pienpinijtham

Organization : Chulalongkorn University. Faculty of Science

Email : prompong.p@chula.ac.th

keyword: Filter paper

LCSH: Nanoplastics -- Detection

LCSH: Raman spectroscopy

LCSH: Raman effect, Surface enhanced

LCSH: Plastic scrap

Abstract: The global threat of accumulated plastic pollution at the nanoscale has become an undeniable problem worldwide, with enormous adverse effects on environmental sustainability and human health. However, detection of nanoplastics in environmental samples still faces challenges due to the limitations of current methods, instruments, and sizes of plastic particles. Herein, we report a salt-induced nanoparticle aggregation process which employs an ordinary, non-modified laboratory filter paper (micron-sized pores) and a simple syringe-filtration set-up. This procedure not only enabled the filtration of nano-sized polystyrene (PS) but also offered surface-enhanced Raman scattering (SERS) enhancement by utilizing silver nanoparticles (AgNPs). Aggregating agents (i.e., KBr, CaCl, and Al(SO4)3) were added to a PS-AgNPs mixture and filtered prior to SERS measurements using a 532-nm excitation wavelength. Two sets of experiments were employed: with and without an aggregating agent. Based on the collected before and after-filtration images and UV-visible spectra, effective filtration and nanoparticle aggregation were observed under salt-induced sample preparation, and thus provided a significant Raman signal intensity at 1002 cm-', attributed to the C-C ring breathing mode vibration of PS. This work suggests that the addition of an aggregating agent or salt to plasmonic nanoparticles is a useful approach to improve the efficiency of SERS and furnish a simple and low- cost filter paper-based detection of PS nanoplastics in water.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2023

Modified: 2023-06-09

Issued: 2023-06-09

บทความ/Article

application/pdf

BibliograpyCitation : In Mae Fah Luang University. School of Science. The Pure and Applied Chemistry International Conference 2023 (PACCON 2023) (pp.314-319). Chiang Rai : Mae Fah Luang University

eng

©copyrights King Mongkut's University of Technology North Bangkok

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	PACCON 2023pp.314-319.pdf	1.7 MB

ใช้เวลา

0.038717 วินาที