TY - JOUR T1 - Ams-Graphite Target Production Methods at the Woods-Hole Oceanographic Institution during 1986-1991 JF - Radiocarbon Y1 - 1993 A1 - Gagnon, A. R. A1 - Jones, G. A. KW - accelerator mass-spectrometry KW - facility KW - ocean KW - radiocarbon KW - samples KW - sediments AB - In July 1986, an AMS radiocarbon target preparation laboratory was established at the Woods Hole Oceanographic Institution to produce graphite to be analyzed at the NSF-Accelerator Facility for Radioisotope Analysis at the University of Arizona (Tucson). By June 1991, 923 graphite targets had been prepared and 847 analyzed. Our lab procedures during this time included the careful documentation of weights of all starting samples, catalysts and final graphite yields, as well as the volume of CO2 gas evolved during CaCO3 hydrolysis or closed-tube organic carbon combustions. From these data, we evaluate the methods used in general and in our lab. VL - 35 SN - 0033-8222 IS - 2 N1 - Lg927Times Cited:12 Cited References Count:14 JO - Radiocarbon ER -