The age determination of ancient porcelain using the pre-dose technique in TL dating was reported. The variation of beta dose with depth below the surface of the porcelain slice

the thermal activation characteristic（TAC） for 110℃ peak

the measurement of paleodose and the estimation of annual dose were studied. The results show that this technique is suitable for authenticity testing of ancient porcelain

but both accuracy and precision for porcelain dating are worse than those for pottery

because porcelain differs from pottery on composition

structure and firing temperature. Besides

some complicated factors in the pre-dose technique would be the possible cause of the greater errors.