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Automated solid-pha...
Automated solid-phase extraction method for the determination of piperaquine in plasma by peak compression liquid chromatography.
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Lindegårdh, N (författare)
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- Ashton, Michael, 1955 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysiologi och farmakologi, Avdelningen för farmakologi,Institute of Physiology and Pharmacology, Dept of Pharmacology
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Bergqvist, Y (författare)
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(creator_code:org_t)
- 2003
- 2003
- Engelska.
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Ingår i: Journal of chromatographic science. - 0021-9665. ; 41:1, s. 44-9
- Relaterad länk:
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https://gup.ub.gu.se...
Abstract
Ämnesord
Stäng
- A validated bioanalytical method for the determination of piperaquine (PQ) in plasma by solid-phase extraction (SPE) and liquid chromatography (LC) using peak compression is presented. Protein is precipitated from plasma with acetonitrile-1% aqueous acetic acid (85:15, v/v). An internal standard (IS) is added to the samples before they are loaded onto a strong cation exchanger (Isolute PRS) SPE column. PQ and the IS are analyzed by LC on a Zorbax SB-CN column (250 x 4.0 mm) with the mobile phase acetonitrile-phosphate buffer [I = 0.1, pH 2.5 (12:88, v/v)] and UV detection at 345 nm. Trichloroacetic acid (TCA) is added to the samples prior to injection into the chromatography system. PQ elutes in a gradient of TCA, which enables peak compression of PQ and significantly higher peak efficiency as a result. The intraassay precision for plasma is determined to be 5.4% at 3.00 microM and 5.8% at 0.050 microM. The interassay precision for plasma is 1.3% at 3.00 microM and 10.0% at 0.050 microM. The lower limit of quantitation and the limit of detection are 0.025 and 0.005 microM, respectively.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper -- Farmaceutiska vetenskaper (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Basic Medicine -- Pharmaceutical Sciences (hsv//eng)
Nyckelord
- Antimalarials
- analysis
- Calibration
- Chromatography
- Liquid
- methods
- Humans
- Hydrogen-Ion Concentration
- Quinolines
- blood
- Reference Standards
- Reproducibility of Results
- Sensitivity and Specificity
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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