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Rapid and precise micro-methods for quantitating active components in commercial bone scintigraphy kits--I. Stannous
B Gallez1, P Osinski, J Adline
1Catholic University of Louvain, School of Pharmacy, Department of Medicinal Chemistry, Brussels, Belgium.
International Journal of Radiation Applications and Instrumentation. Part A, Applied Radiation and Isotopes
|January 1, 1988
Summary
This study quantifies stannous tin-diphosphonate complexes using UV absorption. The method provides rapid and precise measurements of tin(II) in samples, crucial for analytical chemistry applications.
Area of Science:
- Analytical Chemistry
- Spectroscopy
- Coordination Chemistry
Background:
- Stannous tin-diphosphonate complexes are relevant in various chemical applications.
- Accurate quantitation of tin(II) is essential for quality control and research.
- Existing methods may lack speed or precision for certain analyses.
Purpose of the Study:
- To develop and validate a rapid UV-Vis spectrophotometric method for quantifying stannous tin-diphosphonate complexes.
- To establish the precision and accuracy of the developed method for tin(II) determination.
Main Methods:
- Complexation of stannous tin (Sn(II)) with diphosphonate ligand.
- UV-Vis spectrophotometric analysis at specific wavelengths.
- Quantitation performed under a nitrogen atmosphere to prevent tin oxidation.
- Inclusion of excess diphosphonate ligand and chloride ions to stabilize the complex.
Main Results:
- Successful quantitation of stannous tin-diphosphonate complexes was achieved.
- Results were obtained in the range of 10-80 x 10(-9) grams of Sn(II) per sample.
- The method demonstrated high precision with a coefficient of variation of 0.7%.
- Analysis time was rapid, completed within 2 minutes per sample.
Conclusions:
- The developed UV-Vis spectrophotometric method is highly effective for rapid and precise quantitation of tin(II) in stannous tin-diphosphonate complexes.
- This method offers significant advantages in terms of speed and accuracy for analytical applications involving tin.
- The protocol ensures stability and reliable measurements through controlled atmospheric conditions and reagent excess.