Development and validation of a LC-PDA method for methylphenidate analysis in sewage
Maiara C S Paixão1, Jessica Nardi1,2, Charise D Bertol1,3
1Instituto de Ciências Biológicas, Universidade de Passo Fundo, Passo Fundo, Rio Grande do Sul, Brazil.
A new method accurately detects methylphenidate (MPH) in wastewater. This validated technique offers rapid analysis of MPH residues, crucial for monitoring environmental contamination.
Area of Science:
- Environmental Chemistry
- Analytical Chemistry
Background:
- Methylphenidate (MPH) is an emerging pollutant in wastewater.
- Monitoring MPH in sewage is essential for environmental protection.
Purpose of the Study:
- To develop and validate a high-performance liquid chromatography (HPLC) method for MPH detection in sewage.
- To establish a reliable analytical technique for quantifying MPH residues.
Main Methods:
- High-performance liquid chromatography coupled with a photodiode array detector (LC-PDA).
- Solid-phase extraction (SPE) for sample pretreatment.
- Method validation for accuracy, precision, and selectivity.
Main Results:
- A rapid (10-minute run time) and validated method for MPH determination.
- Low limits of detection (0.27 µg/mL) and quantification (0.92 µg/mL).
- Successful application to real sewage samples, detecting 2.8 µg/L MPH.
Conclusions:
- The developed LC-PDA method is feasible for analyzing MPH contamination in sewage.
- The method is selective, accurate, and precise, utilizing widely available equipment.
- This offers a practical approach for environmental monitoring of pharmaceutical pollutants.
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