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...s://pubs.acs.org/doi/book/10.1021/bk-1982-0176 |title=Nuclear and Chemical Dating Techniques: Interpreting the Environmental Record |date=1982-01-29 |publish {{Main article|Samarium–neodymium dating}} ...

...ve substances as [[Radioactive tracer|tracers]], and measure radionuclides in many different types of samples.<ref>Krane, K.S. ''Introductory Nuclear Phy ...ical researchers is to develop more radionuclides and lower concentrations in people and the environment. ...

...web|last=Erdmann|first=Nicole|title=Particle Analysis - Finding the Needle in the Haystack|url=http://ec.europa.eu/dgs/jrc/downloads/jrc_presentation_erd Results of nuclear forensic testing are used by different organisations to make decisions. The information is typically ...

...leon]] numbers ([[mass number]]s) due to different numbers of [[neutron]]s in their nuclei. While all isotopes of a given element have similar chemical p ...ned by Scottish doctor and writer [[Margaret Todd (doctor)|Margaret Todd]] in a 1913 suggestion to the British chemist [[Frederick Soddy]], who populariz ...