The feasibility and features of

14

C dating by liquid scintillation technology for small samples are discussed in this paper. The adopting of small vacuum system and vanadium catalyzer enables the coefficient of recovery of synthesized benzene with 0.5 grams of carbon to reach about 80%. The lowest limit of measurement is about 40000 years. The advantages of this method are to safe time

effort

material and so on. Especially

this method is suitable to measure the ages of small samples of fine stratification of geological well log

subterranean water and ice core etc. This will push the study on fine change of paleoclimate and paleoenvironment since the later pleistocene forward. With this method we have determined ages of 8 samples which ages are four. The results are quite satisfactory.