We present here the current status of AMS dating of iron artifacts at Nagoya University. We initially developed a ``wet'' method of carbon collection from iron samples, consisting of a resistance furnace and a ``wet'' trapping of the evolved CO2 with a saturated Ca(OH)2 solution, in which overall collection efficiency of carbon ranged from 50 to 60%. To improve the carbon-collection efficiency, we more recently constructed a ``dry'' system, consisting of an induction furnace followed by ``dry'' separation of the produced CO2 from combustion gases and conversion of the CO2 into a graphite target. We describe here mainly the performance of the ``dry'' separation system, tested using standard steel samples. We also report previously determined 14C dates on three ancient Oriental artifacts using the earlier ``wet'' procedure.
[Radiocarbon Volume 37, Number 2, 1995]