At our laboratory, acid-base-acid washing, gelatinization, ultrafiltration or other filtration steps are routinely used to extract high purity substances from wood, charcoal or skeletal remains dedicated to dating and other isotopic analyses. In the case of dating, after gas purification and graphitization, the ratio of 14C and 12C atoms in the sample is measured by a LEA type accelerator mass spectrometer.

Accelerator mass spectrometry (ams)

Charcoal and bone preparation by manual chemical pre-treatment

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