The sample preparation by solid phase extraction (SPE) was introduced in the 1970's and had good commercial progress with the development of cartridges and disks for extraction. An important step in ...

To obtain efficient pre-concentration with good precision and recovery, a C18 solid-phase extraction system was applied. The method was validated and the parameters involved in the validation were ...

Bo Zhang, associate professor at Xiamen University, China, spoke to LCGC International at HPLC 2025 in Bruges, Belgium, about ...

The column C18 (Column Technology Inc., Fremont, CA, USA) was used to elute the samples with a linear acetonitrile gradient elution from 100% solvent for liquid chromatography–mass spectrometry ...

An uncontrolled amount of blood was added to the blood reservoir part of the cartridge. The capillary fills and then rotates to sit on top of the SPE column. The blood wicks through the SPE to the ...