(1) An INAA (Instrumental Neutron Activation Analysis) method was used to determine the abundance of rare-earth elements in 58 Late Palaeozoic coals and related rocks in North China.

(2) Combined with the results of INAA and glaze study, this change in elemental composition should be caused by the change in porcelain raw materials or body-making crafts.

(3) INAA techniques of tracing REE applied to studies of soil erosion has been introduced in this paper.

(4) The contents of the major and trace elements in the Yanzhuang meteorites have been determined by instrumental neutron activation analysis(INAA).

(5) INAA technique has been applied to determine composition of the trace elements in the dinosaur fossils from the Upper Jurassic of Guangyuan, Sichuan, in this paper.

(6) The instrumental neutron activation analysis (INAA) has been performed on 27pairs of scalp hair samples for mothers and their new-born babies living in Haidian District, Beijing.