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08-Apr-2019 02:38

Liquid scintillation counting is another radiocarbon dating technique that was popular in the 1960s.In this method, the sample is in liquid form and a scintillator is added.There are three principal techniques used to measure carbon 14 content of any given sample— gas proportional counting, liquid scintillation counting, and accelerator mass spectrometry.Gas proportional counting is a conventional radiometric dating technique that counts the beta particles emitted by a given sample. In this method, the carbon sample is first converted to carbon dioxide gas before measurement in gas proportional counters takes place.By knowing how much carbon 14 is left in a sample, the age of the organism when it died can be known.

Radiocarbon dating is essentially a method designed to measure residual radioactivity.American Chemical Society National Historic Chemical Landmarks.