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Clinical Chemistry 41: 1159-1163, 1995;
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Clinical Chemistry, Vol 41, 1159-1163, Copyright © 1995 by American Association for Clinical Chemistry

Sensitive method for analysis of strontium in human and animal plasma by graphite furnace atomic absorption spectrophotometry

R Barto, AJ Sips, WJ van der Vijgh and JC Netelenbos
Clinical Research Laboratory of Internal Medicine, Free University Hospital, Amsterdam, The Netherlands.

For long-term pharmacokinetic studies in humans as well as in experimental animals, an analysis of strontium (Sr) with a low detection limit and high sensitivity is necessary. The data presented here describe the optimization of the furnace program and sample handling for measuring Sr in plasma by using graphite furnace atomic absorption spectrophotometry. The method was validated and applied to studies on the pharmacokinetics of SrCl2 in humans and rats. Calibration curves were linear up to 57.1 nmol/L. The limit of detection and lower limit of quantification were 0.21 and 0.57 nmol/L, respectively. Reciprocal sensitivity was 0.53 nmol/L Sr at A = 0.0044. The intraassay precision was 2.2%, 1.5%, and 1.1% (n = 6) at 4.57, 22.7, and 49.2 nmol/L Sr, respectively. At these concentrations, the interassay precision and recovery were 0.7%, 1.5%, and 1.8% and 100.4%, 99.1%, and 100.6% (n = 12), respectively. The endogenous Sr concentration in human plasma samples was 0.27 +/- 0.07 mumol/L (n = 18). Pharmacokinetic studies in a human volunteer and in rats demonstrated that this procedure was suited for measuring low Sr concentrations and was applicable to small sample volumes.


The following articles in journals at HighWire Press have cited this article:


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 Clin. Chem.Home page
M. Dijkgraaf-ten Bolscher, J. C. Netelenbos, R. Barto, and W. J.F. van der Vijgh
Strontium as a Marker for Intestinal Calcium Absorption: The Stimulatory Effect of Calcitriol
Clin. Chem., February 1, 2000; 46(2): 248 - 251.
[Abstract] [Full Text] [PDF]

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 Clin. Chem.Home page
P. C. D'Haese, G. F. Van Landeghem, L. V. Lamberts, V. A. Bekaert, I. Schrooten, and M. E. De Broe
Measurement of strontium in serum, urine, bone, and soft tissues by Zeeman atomic absorption spectrometry
Clin. Chem., January 1, 1997; 43(1): 121 - 128.
[Abstract] [Full Text] [PDF]


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