Quantitative determination of drug residues in surfaces, analyzing cotton-swabs by on/off thermal desorption-plasma based ionization-mass spectrometry

Key Points

• Drug residues are quantified on surfaces, revealing their prevalence in various environments.
• The study achieved a detection limit of as low as 0.1 ng/mL for certain substances, underlining the method's sensitivity.
• Cotton-swabs are analyzed using thermal desorption plasma based ionization mass spectrometry, enhancing accuracy.
• This approach highlights the potential for practical applications in forensics and environmental monitoring.