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应用热电离质谱（ＴＩＭＳ）技术，在样品量极少（０．０１８６－０．１４３ ｇ）的情况下测定了岱海沉积物样品中文石的年龄，其值在（８７４０± ６０１）－（１０４４６±４８９）ａ之间，未校正年龄测量精度２％－３％，校正年龄精度４．７％～９．８％，在误差范围内具有一致性，测年结果结合岱海沉积物在 １０．５ ｋａＢＰ前粒度值突然变大，其频率曲线表现为粗颗粒占优势的单峰～双峰态的特征，似显示了降温、水动力条件减弱、风力作用加强的过程，与前人作出的该阶段处于降温时期且岱海湖面缩小的结论相一致，表明ＴＩＭＳ铀系法测定的年龄是可信的．
The ages of Chinese stones in the Daihai sediment samples were determined by using the technique of thermal ionization mass spectrometry (TIMS) with a small sample amount (0.0186-0.143 g), ranging from (8740 ± 601) to (10446) ± 489) a, uncorrected age measurement accuracy of 2% -3%, corrected age accuracy of 4.7% to 9.8%, consistent within the error range, dating the results of Daihai sediments in 10. The particle size suddenly increased before 5 kaBP, and its frequency curve showed the characteristics of unimodal to bimodal dominated by coarse particles. It seems that the process of cooling, hydrodynamic weakening and wind strengthening is similar to the previous one The stage is in the cooling period and the Daihai lake shrinking conclusion consistent, indicating that the TIMS uranium determination of the age method is credible.