Stable and ultrasensitive analysis of organic pollutants and heavy metals by dried droplet method with superhydrophobic-induced enrichment

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

View graph of relations

Author(s)

  • Guobin Zhang
  • Zhenlin Hu
  • Yanwu Chu
  • Lianbo Guo

Detail(s)

Original languageEnglish
Article number338253
Journal / PublicationAnalytica Chimica Acta
Volume1151
Online published25 Jan 2021
Publication statusPublished - 22 Mar 2021

Abstract

Herein, a dried droplet method (DDM) with superhydrophobic-induced enrichment is reported for stable and ultrasensitive analysis of organic pollutants and heavy metals. A superhydrophobic (SHB) substrate was prepared as an analytical detection platform for the DDM. This SHB substrate was synthesized by sequentially coating polydimethylsiloxane (PDMS) and titanium dioxide nanoparticles (TiO2 NPs) onto glass substrate surface. In the droplet drying process, the SHB substrate was demonstrated to suppress the coffee ring effect (CRE) and enriched analyte concentration. Combining with Raman spectroscopy for analysis of methylene blue (MB), and with laser-induced breakdown spectroscopy (LIBS) for analysis of chromium (Cr), the results indicated high stability and ultra-sensitivity for organic pollutants and heavy metals detection. Overall, the DDM with superhydrophobic-induced enrichment has big potential in applications requiring stable and ultrasensitive analysis.

Research Area(s)

  • Coffee ring effect, Dried droplet method, Laser-induced breakdown spectroscopy, Organic pollutants and heavy metals, Raman spectroscopy, Superhydrophobic-induced enrichment

Citation Format(s)

Stable and ultrasensitive analysis of organic pollutants and heavy metals by dried droplet method with superhydrophobic-induced enrichment. / Liu, Yuanchao; Pan, Jie; Zhang, Guobin; Li, Zebiao; Hu, Zhenlin; Chu, Yanwu; Guo, Lianbo; Lau, Condon.

In: Analytica Chimica Acta, Vol. 1151, 338253, 22.03.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review