Often a sample may not be homogeneous, or there may be extraneous materials such as rootlets, thread, glue or some other visible contaminant in the sample.The sample is then washed in distilled water and crushed, or milled, to increase the surface area for subsequent pretreatment.The lab also offers C: N, %C and %N measurements on collagen extracted from non-cremated bones in addition to δ15N and δ13C at no additional cost for samples sent for radiocarbon dating.
Libby and coworkers and has provided age determinations in archeology, geology, geophysics, and other branches of science.
Radiocarbon dating estimates can be obtained on wood, charcoal, marine and freshwater shells, bone and antler, and peat and organic-bearing sediments.
Beta Analytic uses Accelerator Mass Spectrometry (AMS) technology, which gives the most advanced precision and accuracy for carbon-14 measurements.
The lab is based in Miami, Florida, and is the world leader in carbon-14 analyses since 1979.
Solvent extraction may be necessary to remove conservatives or glues.
These are pretreated using a dilute acid/dilute alkali/dilute acid treatment (commonly termed ABA).
If the sample is too small, it will be submitted for direct combustion. *Ultrafiltration is used to concentrate longer protein molecules and can be used to remove shorter chain proteins more likely to originate from contaminants.
Physical and chemical pretreatments vary depending on the type of material and the depositional environment from which it came.
Aside from radiocarbon dating, ISO/IEC 17005-accredited Beta Analytic also provides biobased/renewable carbon content testing to manufacturers, product distributors, and researchers worldwide for biobased products, biofuels, waste-derived fuels and their combustion emissions (CO2 gas).
The lab also uses Carbon-14 analysis for natural product source testing on materials such as flavors, fragrances, essential oils, cosmetics and supplements to identify petrochemicals.
If you require detailed information about a specific pretreatment method or have questions about a particular sample type, please contact us.