Details of the method for sample extraction, derivatization and analysis can be found elsewhere (Cao et al. 2008, 2009a, 2009b).
Extraction efficiency is affected by the chemical nature of the phytochemicals, extraction method, sample particle size, extraction solvent, and the presence of interfering substances.
Specific methods for sample extraction and sample cleanup, involving filtration and gel permeation chromatography column cleanup and GC analysis, have been previously described (Moate et al. 2002).
An effective preparation method for plant sample extraction was developed by (Wu et al. 2012a).
This study investigated the feasibility of a commercial lateral flow immunoassay designed to detect ruminant muscle tissue in feedstuffs, such as "meat-and-bone meal" (MBM) for detection of beef and/or sheep flesh in meat mixtures, and developed a simple method for meat sample extraction.
The advantages of SPME over the previous techniques are that it is a very simple and efficient sample preparation method as sampling, extraction, and concentration can be combined into a single solvent-free step.
The microwave assisted solid phase extraction (MASPE) as a sample extraction method was employed to better extract SMX in water samples and finally the analysis of SMX was done by the UV Vis spectrophotometer.
The work described in this paper involves development of a high-throughput on-line microfluidic sample extraction method using capillary micro-columns packed with MIP beads coupled with tandem mass spectrometry for the analysis of urinary NNAL.
In this study, a novel fatty-acid-based in-tube dispersive liquid liquid microextraction (FA-IT-DLLME) technique is proposed for the first time and is developed as a simple, rapid and eco-friendly sample extraction method for the determination of alkylphenols in aqueous samples using high-performance liquid chromatography ultraviolet detection (HPLC UV).
A multi-stage method was used for sample extraction.
