Results 261 to 270 of about 277,049 (293)

Solid Phase Extraction Troubleshooting

2004
Extraction problems that can arise with solid phase extraction are not unlike those that occur with any type of chemical extraction process, including recovery and contamination problems. Since SPE usually requires columnar flow processes, liquid flow problems are possible and more unique to this methodology.
Michael J. Telepchak, Thomas F. August, Glynn Chaney   +2 more
openaire   +1 more source

Solid-phase extraction in clinical biochemistry

Annals of Clinical Biochemistry: International Journal of Laboratory Medicine, 2002
In order to measure low concentrations of analytes in plasma and urine, it is often necessary to extract and concentrate them. With solid-phase extraction (SPE), this is achieved by partitioning the analytes between a solid and a liquid or headspace vapour.
Walker, Valerie, Mills, Graham A.
openaire   +3 more sources

Solvent-assisted dispersive solid phase extraction

Talanta, 2013
In this research, a novel extraction technique termed solvent-assisted dispersive solid phase extraction (SADSPE) was developed for the first time. The new method was based on the dispersion of the sorbent into the sample to maximize the contact surface.
Mohammad Reza, Jamali, Ahmad, Firouzjah, Reyhaneh, Rahnama   +2 more
openaire   +2 more sources

Solid-Phase Extraction in Malondialdehyde Analysis

Analytical Biochemistry, 1997
Malondialdehyde (MDA) has been widely used as an index of lipoperoxidation in biological and medical sciences as well as in the food industry. A solid-phase extraction (SPE) of the condensation product of the MDA with 2-thiobarbituric acid (TBA) was developed using LiChrolut C18ec, 200 mg (Merck, Darmstadt, Germany), as a SPE cartridge and methanol as ...
J, Suttnar, J, Cermák, J E, Dyr
openaire   +2 more sources

Solid-phase extraction of acidic herbicides

Journal of Chromatography A, 2000
A discussion of solid-phase extraction method development for acidic herbicides is presented that reviews sample matrix modification, extraction sorbent selection, derivatization procedures for gas chromatographic analysis, and clean-up procedures for high-performance liquid chromatographic analysis.
M J, Wells, L Z, Yu
openaire   +2 more sources

Solid phase extraction fundamentals

Nature, 1988
Sample preparation columns based on the principles of solid phase extraction are fast becoming indispensable tools in many types of research.
openaire   +1 more source

Solid-Phase Extraction

2003
Shaofeng Xie, Tao Jiang, František Švec, Robert W. Allington   +3 more
openaire   +2 more sources

Dispersive-Micro-Solid Phase Extraction

Dispersive extraction techniques are valuable for their ability to maximize the interaction between the sample and the extractant, leading to increased extraction efficiency. Dispersive solid phase extraction (dSPE) was initially developed to enhance the selectivity of the analytical process by using a solid phase to retain potential interferents from ...
openaire   +2 more sources

DNA Extraction: Organic and Solid-Phase

2016
DNA extraction remains a critical step in DNA profiling of biological material recovered from scenes of crime. In the forensic community several methods have gained popularity, including Chelex(®), organic extraction, and solid-phase extraction. While some laboratories streamlined their processes and only use one method we have retained several methods
openaire   +2 more sources

Solid-phase extraction

2015
Serban Moldoveanu, Victor David
openaire   +1 more source