Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Mark O. Barnett"'
Publikováno v:
Environmental Research. 207:112140
There is no safe level of lead exposure. As exposure from point sources like lead paint have decreased, non-point sources such as drinking water have become a greater proportional source of total lead exposure. Even at low levels, lead exposure is sh
Publikováno v:
Journal - American Water Works Association. 109:E381-E392
Publikováno v:
Environmental Science & Technology. 50:625-632
Colloids have been implicated in influencing the transport of actinides and other adsorbed contaminants in the subsurface, significantly increasing their mobility. Such colloid-facilitated transport can be induced by changes in groundwater chemistry
Dissolution of uranyl and plutonyl borates: Influences of crystalline structures and aqueous ligands
Autor:
Thomas E. Albrecht-Schmitt, Shuao Wang, Yi Liu, Mark O. Barnett, Yu Yang, Matthew J. Polinski
Publikováno v:
Chemical Geology. 357:67-74
Novel crystalline actinide materials can be used to immobilize uranium and transuranium elements at radioactive waste disposal sites. However, the stability and dissolution of such phases are still poorly understood. In this study, we investigated th
Autor:
Scott Fendorf, Philip M. Jardine, Melanie A. Stewart, Scott C. Brooks, Tonia L. Mehlhorn, Mark O. Barnett, Nicholas T. Basta
Publikováno v:
Environmental Science & Technology. 47:11241-11248
The Department of Defense (DoD) is faced with the daunting task of possible remediation of numerous soil-Cr(VI) contaminated sites throughout the continental U.S. The primary risk driver at these sites is hand-to-mouth ingestion of contaminated soil
Publikováno v:
Radiochimica Acta. 100:827-832
We measured the pH-dependent adsorption of Th(IV), an analogue for Pu(IV) and other tetravalent actinides, to two geomedia: goethite (α-FeOOH(s)) and a heterogeneous Fe-containing sand from the southeastern USA. The goal was to examine whether or no
Autor:
Philip M. Jardine, O. Kent Hartzog, Yu Wang, Mark O. Barnett, Douglas W. Kilgour, Vijay A. Loganthan, Jinling Zhuang
Publikováno v:
Environmental Engineering Science. 28:719-724
We examined the potential formation of chloropyromorphite [Pb5(PO4)3Cl(s)] as an experimental artifact in the physiologically based extraction test (PBET), a common surrogate method used to assess the effectiveness of in situ phosphate-based treatmen
Publikováno v:
Environmental Engineering Science. 27:147-158
This article presents a scalable surface complexation modeling framework for predicting arsenate adsorption onto various types of goethite-coated sands (GCS) and goethite. Four types of GCS with their iron content and surface area varying by nearly a
Publikováno v:
Applied Geochemistry. 24:2051-2060
Iron-coated sands were prepared via two common protocols, a precipitation method, where Fe was precipitated directly onto the sand in a single step, and an adsorption method, where pure goethite was prepared in the first step and then adsorbed onto t
Publikováno v:
Journal of Colloid and Interface Science. 333:6-13
Various approaches for analyzing adsorption data were examined to determine the best method for reporting and interpreting the results of adsorption experiments and ultimately extrapolating laboratory measurements to the field. The interactions of ar