Microstructure and Element Composition of Shell Plates of Liolophura japonica

作     者：CHEN Daohai1,2 1. College of Fisheries, Ocean University of China, Qingdao 266003, Shangdong, China 2. Life Science and Technology School, Zhanjiang Normal University, Zhanjiang 524048, Guangdong, China 

作者机构：College of Fisheries Ocean University of China Qingdao China Life Science and Technology School Zhanjiang Normal University Zhanjiang China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2010年第15卷第2期

页      面：176-184页

学科分类：0710[理学-生物学] 07[理学] 071002[理学-动物学] 

基　　金：Supported by the Foundation of National 908 Program (908-01-ST12) the National High Technology Research and Development Program of China(863 Program) (2007AA09Z433) 

主　　题：Liolophura japonica environmental scanning electron microscope X-ray photoelectron spectroscopy (XPS) microstructure of shell plate 

摘      要：The microstructure characteristics of shell plates of chiton Liolophura japonica Lischke were analyzed using environmental scanning electron microscopy （ESEM）. The results show that the internal structure of the shell plate of chiton Liolophurajaponica is composed of seven calcium layers which were crossed lamellar crystallites, homoge- neous structure, granular crystallites, and trabecular type crystallites. The element compositions of shell plates were analyzed using X-ray photoelectron spectroscopy （XPS）. The results determined by XPS show that the surface chemical states of various layers are different. There are 13 elements （Na, O, N, C, S, P, Ca, C1, Si, A1, K, Fe, Mg） on the shell plate of chiton L. japonica. Among the 13 elements, 11 are on the outside pigment layer except K and S. Among seven layers of shell plate, there is the largest quantity of elements on the outside pigment layer, and the least quantity of elements is on layer C （Articulamentum auctorum）. There are 7 elements on the layer C （Articulamentum auctorum）. Be- sides calcium carbonate, there are some inorganic compounds on the shell plate, such as NaC1, MgO, A1203, silicate, sulfate and phosphate. There are some organic chemical components, such as carbohydrate, organic sulfide, and organic nitride on the shell plates.