AMS C-14 sample preparation at the KCCAMS/UCI facility: Status report and performance of small samples
|Title||AMS C-14 sample preparation at the KCCAMS/UCI facility: Status report and performance of small samples|
|Publication Type||Journal Article|
|Year of Publication||2007|
|Authors||Santos, G. M., Moore R. B., Southon J. R., Griffin S., Hinger E., & Zhang D.|
|Type of Article||Article; Proceedings Paper|
|Keywords||1705; accelerator mass-spectrometry; development; graphite; ion-source; irvine; Keck / AMS Lab; Research; university-of-california|
We present an overview of accelerator mass spectrometry (AMS) radiocarbon sample preparation and measurements, describing the technical upgrades that now allow us to routinely obtain 0.2-0.3% precision for l-mg carbon samples. A precision of similar to 1 % on samples with 100 mu g of carbon can also be achieved. We have also developed graphitization techniques and AMS procedures for ultra-small samples (down to 0.002 mg of carbon). Detailed time series are presented for large and small aliquots of standards such as NIST OX-I and OX-II; FIRI-C and -D; IAEA-C6, -C7 and -C8; and C-14-free samples.