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Accelerator mass spectrometry as a bioanalytical tool for nutritional research
1Center for Accelerator Mass Spectrometry, Lawrence Livermore National Laboratory, Livermore, CA 94551, USA.
Advances in Experimental Medicine and Biology
|October 22, 1998
Summary
Accelerator Mass Spectrometry (AMS) offers ultra-sensitive detection of long-lived radioisotopes for geochronology and bioanalytical tracing. This method quantifies labeled biochemicals at attomole levels, surpassing other isotopic techniques.
Area of Science:
- Analytical Chemistry
- Geochemistry
- Biochemistry
Background:
- Accelerator Mass Spectrometry (AMS) is a powerful analytical technique.
- Traditionally used in geochronology, AMS has emerging applications in bioanalysis.
- It detects long-lived radioisotopes irrespective of decay or half-life.
Purpose of the Study:
- To review the advantages of AMS over other isotopic labeling methods.
- To highlight the sensitivity and specificity of AMS for bioanalytical tracing.
- To provide examples demonstrating analytical integrity and applicability.
Main Methods:
- Utilizing Accelerator Mass Spectrometry for radioisotope detection.
- Applying the technique to geochronological dating.
- Employing AMS for bioanalytical tracing of labeled biochemicals.
Main Results:
- AMS achieves ultra-high sensitivity, detecting isotope concentrations to parts per quadrillion.
- Quantification of labeled biochemicals is possible at attomole levels in milligram samples.
- Demonstrated analytical integrity, sensitivity, specificity, and broad applicability.
Conclusions:
- AMS is a highly sensitive and specific technique for radioisotope detection.
- Its capabilities extend significantly beyond traditional geochronology into bioanalysis.
- AMS offers distinct advantages for quantifying trace levels of labeled compounds.