Handheld Microplasma Optical Emission Spectrometer Coupling with Self-Heating Solid-Phase Microextraction for On-Site Detection of Urinary Lead

Fund Project:

  • Article
  • |
  • Figures
  • |
  • Metrics
  • |
  • Reference
  • |
  • Related
  • |
  • Cited by
  • |
  • Materials

    Microplasma-based optical emission spectroscopy (MP-OES) has great potential for application in analytical chemistry. However, further integration of efficient sample introduction methods is essential to enhance its capability for elemental field detection. Herein, a handheld nozzle-electrode point discharge optical emission spectrometry (μPD-OES) device coupled with a self-heating solid-phase microextraction (SH-SPME) device was constructed, which integrated sample introduction, detection, and data processing systems with low power consumption (~ 25 W) and battery-powered operation. The innovative SH-SPME completed thermal analyte desorption by directly heating the SPME fiber through a mini voltage regulator circuit board, significantly reducing power consumption and eliminating the external heating and high-temperature thermal desorption chamber required for conventional SPME-μPD-OES. The customized SH-SPME-μPD-OES device was successfully applied to analyze lead in urinary and other biological samples, with a limit of detection of 1.2 μg L-1 and recoveries ranging from 92% to 108%. It is worth noting that SH-SPME allows the building of a palm-sized atomic spectrometer (20.3 cm length × 10.3 cm width × 10.5 cm height). This device represents an important breakthrough in miniaturized atomic spectrometers and holds promise as a valuable tool for on-site elemental monitoring in various fields.

    Cited by
Get Citation
Article Metrics
  • Abstract:
  • PDF:
  • HTML:
  • Cited by:
  • Received:
  • Revised:
  • Adopted:
  • Online: June 09,2024
  • Published:
Copyright © 2024 Atomic Spectroscopy Press Ltd All rights reserved
Supported by:Beijing E-Tiller Technology Development Co., Ltd.