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4D-Printed Temperature-Controlled Flow-Actuated Solid-Phase Extraction Devices.

Chun-Yi Wu1, Jyun-Ran Chen1, Cheng-Kuan Su1

  • 1Department of Chemistry, National Chung Hsing University, Taichung 402, Taiwan, R.O.C.

Analytical Chemistry
|July 9, 2021
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Summary
This summary is machine-generated.

This study introduces a novel four-dimensional printing (4DP) device for smart sample pretreatment. The 4DP solid-phase extraction (SPE) column effectively extracts metal ions from complex samples, matching commercial apparatus performance.

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Additive Manufacturing

Background:

  • Stimuli-responsive materials enhance analytical device functionality.
  • Four-dimensional printing (4DP) enables advanced device fabrication.
  • Smart sample pretreatment is crucial for accurate elemental analysis.

Purpose of the Study:

  • To fabricate a 4D-printed smart sample pretreatment device using stimuli-responsive polymers.
  • To develop a solid-phase extraction (SPE) column with a temperature-controlled valve for metal ion extraction.
  • To evaluate the analytical performance and applicability of the 4DP device for trace metal determination.

Main Methods:

  • Utilized digital light processing three-dimensional printing (3DP) with photocurable, shape-memory polymers.
  • Fabricated an integrated SPE column and flow-actuated valve system.
  • Optimized temperature and flow rates for sample, eluent, and rinsing streams.

Main Results:

  • Successfully extracted Mn, Co, Ni, Cu, Zn, Cd, and Pb ions from high-salt samples.
  • Achieved method detection limits (MDLs) from 0.7 to 22.1 ng L⁻¹ for target metal ions.
  • Demonstrated reliable performance in reference materials and real-world samples (seawater, urine).

Conclusions:

  • 4DP technology was successfully applied to create a multi-functional, stimuli-responsive sample pretreatment device.
  • The fabricated device exhibits analytical performance comparable to commercial systems.
  • This work advances 3DP applications for developing more efficient analytical schemes.