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solid phase extraction
The sample preparation consisted of enrichment of the analytes by solid phase extraction with C18 cartridges followed by clean-up of the enriched raw extracts by high performance size exclusion gel permeation chromatography.
      
RP-18 solid phase extraction has been developed for sample preparation.
      
Fast solid phase extraction of polychlorobiphenyls and chlorinated pesticide residues from mussels using sep-pak cartridges
      
Sample preparation included extraction of meat samples and enzymatic digest of urine samples followed by solid phase extraction with RP-18 columns for sample clean-up.
      
An accurate pretreatment of the biological samples was implemented by means of solid phase extraction (SPE) on HLB cartridges.
      
The method uses solid phase extraction (SPE) and has acceptable sensitivity, precision and accuracy.
      
The limit of determination can be reduced to 0.1 μg.L-1 by solid phase extraction with a subsequent evaporation step.
      
Solid phase extraction coupled on-line with a mincrobore reversed phase HPLC system for the quantitation of small marker proteins is demonstrated.
      
Three propranolol-derived MIPs were investigated as selective sorbents for the solid phase extraction of β-blockers.
      
Using simple solid phase extraction, recoveries of 41% were obtained using aminopropyl cartridges for urine and of 69% using end-capped cyclohexyl cartridges for plasma.
      
Rapid determination of the anti-cancer drug Melphalan (AlkeranTM) in human serum and plasma by automated solid phase extraction
      
Automated solid phase extraction of the analyte is carried out with C18 sorbent packed in a 96 well format microtitre plate using a robotic sample processor.
      
The method involved 200 mL samples taken by offline, solid phase extraction by OASIS polymeric cartridges followed by liquid chromatography-atmospheric pressure, chemical ionization-mass spectrometry (LC-APCI-MS).
      
Ion-pair solid phase extraction is coupled on-line to ion-pair liquid chromatography with UV detection.
      
The application of molecular imprinting technology to solid phase extraction
      
The method involved using solid phase extraction and high performance liquid chromatography (HPLC) with reversed phase C18 column, and UV detection at 280 nm.
      
Careful pretreatment of the plasma samples was implemented by means of solid phase extraction (SPE).
      
Styrene-divinyl benzene packed cartridges were used for solid phase extraction of the real surface water samples at neutral pH.
      
Three sample preparation techniques are assessed: Solid Phase Extraction (SPE), Direct Dilution and Protein Precipitation.
      
We report on a validated assay of a new drug candidate using a 1 mm inner diameter (i.d.) analytical column and semi-automated sample preparation with solid phase extraction in the 96-well plate format.
      
 

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