Gas Chromatographic Isolation of Individual Compounds from Complex Matrices for Radiocarbon Dating

Gas chromatographic isolation of individual compounds from complex matrices for radiocarbon dating.

This paper describes the application of a novel, practical approach for isolation of individual compounds from complex organic matrices for natural abundance radiocarbon measurement. This is achieved through the use of automated preparative capillary gas chromatography (PCGC) to separate and recover sufficient quantities of individual target compounds for (14)C analysis by accelerator mass spec...

Radiocarbon Dating.

Radiocarbon Dating of Ground Water

Radiocarbon dating of ground water is used in combination with the primary measurements of classical hydrological and chemical analyses. Radiocarbon dating will produce the best results when it involves multiple measurements or sequential sampling. The most useful data come from these comparisons and not from absolute ages. In the case of multiple measurements, the apparent ages of the ground w...

Fifty Years of Radiocarbon Dating

The history of radiocarbon dating through the 20th century is presented, focusing on the work of Willard F. Libby, who introduced radiocarbon dating in 1949, and its application during the following 50 years. Topics include an explanation of radiocarbon dating, by which the age of organic matter can be determined; difficulties Libby encountered in developing processes for accurate measurements;...

Isolation and Gas Chromatographic Analysis of Dextromethorphan from Cough Syrup

In the previous laboratory experiment, we saw how the intermolecular forces between molecules determined the boiling point of a liquid. Distillation was one method which could be used to separate (or purify) chemical compounds. Unfortunately, distillation is not always a practical method to employ for purifications. Large molecules can have extremely high boiling points, even under reduced pres...