naa a22 4500 510751008 CHVBK 20180411083104.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11270-013-1678-y doi (NATIONALLICENCE)springer-10.1007/s11270-013-1678-y Comparison of Sequential Extraction and Bioaccessibility Analyses of Lead Using Urban Soils and Reference Materials [Elektronische Daten] [Jeffrey Howard, Brian Dubay, Shawn McElmurry, Josiah Clemence, W. Daniels] A study was undertaken using urban soils in Detroit, MI and reference materials (cerussite, anglesite, pyromorphite, apatite, goethite, calcite, pyrolusite, and peat) to determine which geochemical forms of Pb measured by sequential extraction analysis are bioaccessible. The results suggest that the water soluble (Pb-fulvic acid complexes), exchangeable, and part of the carbonate-occluded fractions are bioaccessible. The Fe oxide-occluded, Mn oxide-occluded, and higher molecular weight component of the organically bound fraction are not bioaccessible. Sequential extraction predicts the presence of detectable levels of bioaccessible Pb in the rhizosphere when the summed total is ≥90mgkg−1 and labile Pb is ≥30mgkg−1. Cerussite (paint-Pb) and anglesite (auto-Pb), recovered mainly in the carbonate-occluded fraction, may cause an overestimation of calcite-Pb. Pyromorphite and apatite Pb (bone) may cause an overestimation of Fe oxide-occluded Pb. Springer Science+Business Media Dordrecht, 2013 Anthrosol nationallicence Pollution nationallicence Sequential extraction nationallicence Bioaccessibility nationallicence Howard Jeffrey Department of Geology, Wayne State University, 48202, Detroit, MI, USA aut Dubay Brian Department of Geology, Wayne State University, 48202, Detroit, MI, USA aut McElmurry Shawn Department of Civil and Environmental Engineering, Wayne State University, 48202, Detroit, MI, USA aut Clemence Josiah Department of Civil and Environmental Engineering, Wayne State University, 48202, Detroit, MI, USA aut Daniels W. Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, 24061, Blacksburg, VA, USA aut Water, Air, & Soil Pollution Springer Netherlands 224/10(2013-10-01), 1-13 0049-6979 224:10<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1678-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1678-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Howard Jeffrey Department of Geology, Wayne State University, 48202, Detroit, MI, USA aut NATIONALLICENCE 700 1- Dubay Brian Department of Geology, Wayne State University, 48202, Detroit, MI, USA aut NATIONALLICENCE 700 1- McElmurry Shawn Department of Civil and Environmental Engineering, Wayne State University, 48202, Detroit, MI, USA aut NATIONALLICENCE 700 1- Clemence Josiah Department of Civil and Environmental Engineering, Wayne State University, 48202, Detroit, MI, USA aut NATIONALLICENCE 700 1- Daniels W. Department of Crop and Soil Environmental Sciences, Virginia Polytechnic Institute and State University, 24061, Blacksburg, VA, USA aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/10(2013-10-01), 1-13 0049-6979 224:10<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer