@inproceedings{oai:kumadai.repo.nii.ac.jp:00022668,
 author = {吉朝, 朗 and 奥部, 真樹 and 境, 俊典 and Sakai, Shunsuke and Yoshiasa, Akira and Arima, Hiroshi and Okube, Maki and Numako, Chiya and Sato, Tsutomu},
 book = {AIP Conference Proceedings},
 month = {},
 note = {application/pdf, 論文(Article), Local structure around arsenic atoms in K-T boundary clays was studied by As K-edge XAFS spectroscopy. The threshold E0 energy of As and the characterization of the white peak of XANES spectra agree well with the values of As(+5) minerals like Zn2(AsO4)2(OH) 22H2O and CaCu(AsO4)(OH) according to the comparison with several types of arsenic minerals. This indicates that arsenic is in a high oxidation state As(+5) and occupies the AsO4 tetrahedral site of a mineral in K-T boundary clays., http://proceedings.aip.org/proceedings/},
 pages = {274--276},
 publisher = {American Institute of Physics},
 title = {XAFS study of as in K-T boundary clays},
 volume = {882},
 year = {2007},
 yomi = {サカイ, シュンスケ}
}