เคมี
เอกสารมาตรฐาน
สหรัฐอเมริกา
AOAC
2007.01
Pesticide Residues in Foods by Acetonitrile Extraction and Partitioning with Magnesium Sulfate: Gas Chromatography/Mass Spectrometry and Liquid Chromatography/Tandem Mass Spectrometry
2013 (2023)
24
AOAC 2023 Ch. 10.1.04
The QuEChERS (quick, easy, cheap, effective, rugged, and safe) method uses a single-step buffered acetonitrile (MeCN) extraction and salting out liquid–liquid partitioning from the water in the sample with MgSO4. Dispersive-solid-phase extraction (dispersive-SPE) cleanup is done to remove organic acids, excess water, and other components with a combination of primary secondary amine (PSA) sorbent and MgSO4; then the extracts are analyzed by mass spectrometry (MS) techniques after a chromatographic analytical separation ...