BACKGROUND A realistic estimation of the health risk of human exposure to solid-phase arsenic (As) derived from historic mining operations is a major challenge to redevelopment of California's famed "Mother Lode" region. Arsenic, a known carcinogen, occurs in multiple solid forms that vary in bioaccessibility. X-ray absorption fine-structure spectroscopy (XAFS) was used to identify and quantify...

Metalloproteins are an important class of proteins and perform a variety of biological processes. They are ideally suited for Synchrotron Radiation studies. In particular, X-ray region of the spectrum has been very effectively exploited not only for crystallographic structure determinations but X-ray absorption fine structure (XAFS) and more recently X-ray solution scattering techniques have al...

Grazing-Incidence XAFS Study of Aqueous Zn(II) Sorption on α-Al2O3 Single Crystals Thomas P. Trainor,∗,1,2 Jeffrey P. Fitts,† Alexis S. Templeton,∗ Daniel Grolimund,‡ and Gordon E. Brown, Jr.∗,§ ∗Department of Geological and Environmental Sciences, Stanford University, Stanford, California 94305; †Environmental Molecular Sciences Institute, Columbia University, New York, New York 10027; ‡Swiss ...