@article{oai:repo.qst.go.jp:00044219,
 author = {Watanabe, Yoshito and Homma-Takeda, Shino and Yukawa, Masae and Nishimura, Yoshikazu and 渡辺 嘉人 and 武田 志乃 and 湯川 雅枝 and 西村 義一},
 journal = {International Journal of PIXE},
 month = {},
 note = {Micro-PIXE and inductively coupled plasma mass spectrometry (ICP-MS) were applied to elemental distribution analyses in plant root apex which is composed of various types of tissues and cells in different developmental stages. ICP-MS was so sensitive that a large number of elements including Na, Mg, P, S, K, Ca, Mn, Fe, Cu, Zn, Se, Rb, Sr and Cs could be determined quantitatively. These fourteen elements included almost all the essential elements for plant growth. Only a rough estimation, however, could be obtained by ICP-MS for the elemental distribution at the tissue level, by analyzing sections from the root apex. On the other hand, micro-PIXE was effective for detailed mappings of elemental distributions. The images of elemental distributions were obtained for Na, Mg, P, S, K, Ca, Mn, Fe and Zn, corresponding to the microscopic images of the root structures. The localizations of P, K and Zn in some tissues were observed by the mappings. These results indicated that micro-PIXE and ICP-MS have different, but complementary abilities for the investigation of elemental distributions in plant tissues.},
 pages = {125--131},
 title = {Application of micro-PIXE and ICP-MS to analysis of elemental distribution in root apex of plants.},
 volume = {11},
 year = {2001}
}