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BS ISO 18990:2025 Measurement of radioactivity in urine-238Pu, 239Pu and 240Pu - Test method using alpha spectrometry or ICP-MS >
BS ISO 18990:2025 Measurement of radioactivity in urine-238Pu, 239Pu and 240Pu - Test method using alpha spectrometry or ICP-MS, 2026
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- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Symbols
- 5 Principle
- 6 Chemical reagents and apparatus [Go to Page]
- 7 Sample preparation procedure [Go to Page]
- 8 Measurement [Go to Page]
- 9 Expression of results
- 10 Test report
- 11 Quality assurance and quality control program [Go to Page]
- Annex A (informative) Chemical separation of plutonium from 20 ml of urine sample
- Annex B (informative) Chemical separation of plutonium from 100 ml of urine sample
- Annex C (informative) Chemical separation of plutonium from a 24 h excretion urine sample
- Annex D (informative) Preparation of the source by electrodeposition
- Annex E (Informative) Preparation of the alpha source by lanthanide fluoride co-precipitation
- Annex F (informative) Activity measurement and results expression when using the alpha spectrometry method
- Annex G (informative) Measurement and results expression when using the ICP-MS method
- Bibliography [Go to Page]