Quantification of palladium in wastewater samples by matrix-matching calibration strategy assisted deep eutectic
Elif Seda Koçoğlu1, Özge Yılmaz1, Emine Gülhan Bakırdere2
1Department of Chemistry, Yıldız Technical University, 34220, Istanbul, Turkey.
Environmental Monitoring and Assessment
|May 20, 2021
Summary
A new deep eutectic solvent-based (DESb) liquid phase microextraction (LPME) method enhances palladium detection. This efficient technique significantly improves sensitivity for trace-level palladium quantification using flame atomic absorption spectrometry (FAAS).
Area of Science:
- Analytical Chemistry
- Environmental Chemistry
Background:
- Palladium (Pd) is a critical element in catalysis and industry.
- Accurate quantification of trace palladium is essential for environmental monitoring and quality control.
- Existing preconcentration methods can be complex or lack sufficient sensitivity.
Purpose of the Study:
- To develop an efficient, sensitive, and easy deep eutectic solvent-based (DESb) liquid phase microextraction (LPME) method.
- To preconcentrate palladium (Pd) for trace-level quantification.
- To enhance the detection capabilities of flame atomic absorption spectrometry (FAAS).
Main Methods:
- Development and optimization of a DESb-LPME technique.
- Integration with a flame atomic absorption spectrometry (FAAS) system.
- Utilized a lab-made slotted quartz tube (SQT) for enhanced sensitivity.
Main Results:
- Achieved quantification and detection limits of 24.7 and 7.4 μg L⁻¹, respectively.
- Demonstrated an almost 50-fold enhancement in detection power compared to standard FAAS.
- Obtained high recovery rates (85-91%) in spiked wastewater samples.
Conclusions:
- The developed DESb-LPME-SQT-FAAS method is highly efficient and sensitive for trace palladium determination.
- The method shows excellent applicability and accuracy for analyzing palladium in complex matrices like wastewater.
- This technique offers a significant improvement for sensitive palladium analysis.
