In-syringe dispersive solid-phase microextraction of oxalate using starch/dextrin- calcium/Silver nanoparticles sorbent followed by UV–visible spectrometry

Key Points

• Extraction of oxalate achieved using solid-phase microextraction, resulting in significant improvement in sensitivity.
• The use of starch/dextrin-calcium/silver nanoparticle sorbent enhances extraction efficiency noted by UV-visible spectrometry.
• Application of dispersive solid-phase microextraction allows quick processing, with considerable time-saving benefits in analysis.
• Supports development of novel methods in environmental monitoring of oxalate levels; calls for further validation in real-world settings.