Abstract
The aim of this work is to ascertain the achievable mass spectrometric as well as radiometric detection limits on a realistic as well as on a common base, in order to evaluate the competitiveness of both kinds of detection principles for their use in urgency cases. The 90Sr detection methods chosen for comparison purposes are: (1) Cerenkov counting with combined lead and antieoineidence shielding, representing the radioanalytical methods (RAM); (2) accelerator mass spectroscopy at the Munich tandem accelerator (AMS); (3) inductively coupled plasma-mass spectroscopy (ICP-MS). The minimum activities, detectable within a few hours after the Strontium enrichment by chemical Separation are: RAM≍0.1 1.0 Bq; AMS≍5 500 Bq; ICP-MS ≍106Bq related to the necessary carrier (≍ 20 mg in AMS) and started sample volume or mass. The ubiquitous level of Zr contamination restricts mass spectrometric methods principally.
| Original language | English |
|---|---|
| Pages (from-to) | 235-240 |
| Number of pages | 6 |
| Journal | Radiochimica Acta |
| Volume | 61 |
| Issue number | 3-4 |
| DOIs | |
| State | Published - Jun 1993 |
Keywords
- Accelerator mass spectrometry (AMS)
- Cerenkov counting
- Inductively coupled
- Minimum detectable amount (MDA)
- Sr
- Y
- plasma mass spectrometry (ICP-MS)