SPECTROPHOTOMETRIC DETERMINATION OF TRACE HEAVY METAL IONS IN WATER WITH THE ASSISTANCE OF ELECTROSPUN NANOFIBER MEMBRANE EXTRACTION AND CHEMOMETRICS CALCULATION
Abstract
A set of well-controlled electrospinning devices was established by a traditional UV-Vis spectrometer in order to produce different electrospun nanofiber membranes (ENMs) quickly and purposefully. Optimal fabrication conditions for 2-acrylamide-2-methylpropane sulfonic acid (AMPS) modified polyvinylidene fluoride (PVDF) ENMs, named PVDF/AMPS ENMs, were achieved by experiments. The results presented in radical electric focusing solid phase extraction (REFSPE) confirm that PVDF/AMPS ENMs have an outstanding ability to adsorb metal ions in water under optimal conditions with an extraction voltage of 9 V and an operation time of 23 min. The UV-Vis spectra of the heavy metal ions, which were eluted from the absorption materials by supersonic elution, were regressed using the self-established PLS model, and the concentration of each ion could be calculated accurately. The combined method using REFSPE enrichment through PVDF/AMPS ENMs, ultrasonic eluting, UV-Vis detection, and PLS calculation provides a practical and effective solution for the determination of trace charged compounds.
Keywords
radical electric focusing solid-phase extraction,
synchronous spectrophotometric determination,
heavy metal ions,
electrospun nanofiber membrane,
chemometrics calculation
Supporting agencies: This work was financially supported by the National Natural Science Foundation of China (NNSFC) No. 21476172 and 21405110.
About the Authors
Y. Guo
Tianjin Polytechnic University; School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
China
State Key Laboratory of Separation Membranes and Membrane Processes
Tianjin 300387
Ch. Teng
School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
Tianjin 300387
China
Tianjin 300387
J. Liu
School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
Tianjin 300387
China
Tianjin 300387
X. Liu
School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
Tianjin 300387
China
Tianjin 300387
X. Bian
Tianjin Polytechnic University; School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
China
State Key Laboratory of Separation Membranes and Membrane Processes
Tianjin 300387
Q. Zhang
Tianjin Polytechnic University; School of Environmental and Chemical Engineering, Tianjin Polytechnic University
China
China
State Key Laboratory of Separation Membranes and Membrane Processes
Tianjin 300387
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Review
For citations:
Guo Y., Teng Ch., Liu J., Liu X., Bian X., Zhang Q. SPECTROPHOTOMETRIC DETERMINATION OF TRACE HEAVY METAL IONS IN WATER WITH THE ASSISTANCE OF ELECTROSPUN NANOFIBER MEMBRANE EXTRACTION AND CHEMOMETRICS CALCULATION. Zhurnal Prikladnoii Spektroskopii. 2020;87(1):173(1)-173(7).
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