TY - JOUR
T1 - Parallel artificial liquid membrane extraction
T2 - micro-scale liquid-liquid-liquid extraction in the 96-well format
AU - Gjelstad, Astrid
AU - Rasmussen, Knut Einar
AU - Parmer, Marthe Petrine
AU - Pedersen-Bjergaard, Stig
PY - 2013/6
Y1 - 2013/6
N2 - Background: This paper reports development of a new approach towards analytical liquid-liquid-liquid membrane extraction termed parallel artificial liquid membrane extraction. A donor plate and acceptor plate create a sandwich, in which each sample (human plasma) and acceptor solution is separated by an artificial liquid membrane. Parallel artificial liquid membrane extraction is a modification of hollow-fiber liquid-phase microextraction, where the hollow fibers are replaced by flat membranes in a 96-well plate format. Results: Four basic drugs (pethidine, nortriptyline, methadone and haloperidol) were extracted from human plasma in 30 min, followed by analysis with LC-MS/MS. Extraction recoveries for the model analytes were in the range of 34-74% from human plasma. LOQs were in the range of 0.01-0.35 ng/ml, linearity above 0.9955 for all drugs and with RSD values below 12%. Conclusion: Liquid-liquid-liquid membrane extraction was successfully performed in a slightly modified commercially available 96-well plate format.
AB - Background: This paper reports development of a new approach towards analytical liquid-liquid-liquid membrane extraction termed parallel artificial liquid membrane extraction. A donor plate and acceptor plate create a sandwich, in which each sample (human plasma) and acceptor solution is separated by an artificial liquid membrane. Parallel artificial liquid membrane extraction is a modification of hollow-fiber liquid-phase microextraction, where the hollow fibers are replaced by flat membranes in a 96-well plate format. Results: Four basic drugs (pethidine, nortriptyline, methadone and haloperidol) were extracted from human plasma in 30 min, followed by analysis with LC-MS/MS. Extraction recoveries for the model analytes were in the range of 34-74% from human plasma. LOQs were in the range of 0.01-0.35 ng/ml, linearity above 0.9955 for all drugs and with RSD values below 12%. Conclusion: Liquid-liquid-liquid membrane extraction was successfully performed in a slightly modified commercially available 96-well plate format.
KW - Chromatography, Liquid
KW - Equipment Design
KW - Humans
KW - Limit of Detection
KW - Liquid Phase Microextraction
KW - Membranes, Artificial
KW - Pharmaceutical Preparations
KW - Tandem Mass Spectrometry
U2 - 10.4155/bio.13.59
DO - 10.4155/bio.13.59
M3 - Journal article
C2 - 23742307
SN - 1757-6180
VL - 5
SP - 1377
EP - 1385
JO - Bioanalysis
JF - Bioanalysis
IS - 11
ER -