{Reference Type}: Journal Article
{Title}: Simultaneous effervescence-assisted microextraction and magnetic adsorbent generation for rapid and cost-effective organochlorine pesticides analysis.
{Author}: Li W;Zhang Q;Liu Y;Deng B;Zheng Y;Li J;Chen D;
{Journal}: Food Chem
{Volume}: 457
{Issue}: 0
{Year}: 2024 Nov 1
{Factor}: 9.231
{DOI}: 10.1016/j.foodchem.2024.140192
{Abstract}: This study introduced an innovative magnetic effervescence-assisted microextraction method, streamlining the preparation of effervescent tablets through a one-pot method that blends a CO2 donor (Na2CO3) and an H+ donor (NaH2PO4) with bare magnetic particles (Fe3O4) and an adsorbent (hydroxylated multi-walled carbon nanotubes), followed by pressing. During the extraction process, the bare magnetic particles and adsorbent undergo in-situ self-assembly to create a magnetic adsorbent. The effervescence generates bubbles that enhance effective extraction and magnetism facilitates the easy separation of the magnetic adsorbent from the sample solution, completing the process within 4 min. Applied to organochlorine pesticide analysis in fruit juices and herbal extracts, the method exhibits excellent linearity (R2 > 0.993), sensitivity (detection limits: 0.010-0.125 ng/mL), accuracy (recoveries: 85.8-99.9%), and precision (RSDs < 9.7%) with GC-ECD. Overall, this approach stands out for its simplicity, cost-effectiveness, and suitability for on-site analysis, owing to its operational ease and independence from specialized equipment.