@inproceedings{84e5f757a42f45c887a61be33ec99cf5,
title = "XAFS study of as in K-T boundary clays",
abstract = "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.",
keywords = "As in K-T boundary clay, Chemical species of as, Local structure of as, XAFS of as minerals",
author = "Shunsuke Sakai and Akira Yoshiasa and Hiroshi Arima and Maki Okube and Chiya Numako and Tsutomu Sato",
year = "2007",
month = mar,
day = "27",
doi = "10.1063/1.2644499",
language = "English",
isbn = "0735403848",
series = "AIP Conference Proceedings",
pages = "274--276",
booktitle = "X-RAY ABSORPTION FINE STRUCTURE - XAFS13",
note = "X-RAY ABSORPTION FINE STRUCTURE - XAFS13: 13th International Conference ; Conference date: 09-07-2006 Through 14-07-2006",
}