
<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Plathe, K. L.</style></author><author><style face="normal" font="default" size="100%">von der Kammer, F.</style></author><author><style face="normal" font="default" size="100%">Hassellov, M.</style></author><author><style face="normal" font="default" size="100%">Moore, J.</style></author><author><style face="normal" font="default" size="100%">Murayama, M.</style></author><author><style face="normal" font="default" size="100%">Hofmann, T.</style></author><author><style face="normal" font="default" size="100%">Hochella, M. F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Using FlFFF and aTEM to determine trace metal-nanoparticle associations in riverbed sediment</style></title><secondary-title><style face="normal" font="default" size="100%">Environmental Chemistry</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2010</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">&lt;Go to ISI&gt;://000274732200009</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1</style></number><volume><style face="normal" font="default" size="100%">7</style></volume><pages><style face="normal" font="default" size="100%">82-93</style></pages><isbn><style face="normal" font="default" size="100%">1448-2517</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Analytical transmission electron microscopy (aTEM) and flow field flow fractionation (FlFFF) coupled to multi-angle laser light scattering (MALLS) and high-resolution inductively coupled plasma mass spectroscopy (HR-ICPMS) were utilised to elucidate relationships between trace metals and nanoparticles in contaminated sediment. Samples were obtained from the Clark Fork River (Montana, USA), where a large-scale dam removal project has released reservoir sediment contaminated with toxic trace metals (namely Pb, Zn, Cu and As) which had accumulated from a century of mining activities upstream. An aqueous extraction method was used to recover nanoparticles from the sediment for examination; FlFFF results indicate that the toxic metals are held in the nano-size fraction of the sediment and their peak shapes and size distributions correlate best with those for Fe and Ti. TEM data confirms this on a single nanoparticle scale; the toxic metals were found almost exclusively associated with nano-size oxide minerals, most commonly brookite, goethite and lepidocrocite.</style></abstract><accession-num><style face="normal" font="default" size="100%">ISI:000274732200009</style></accession-num><notes><style face="normal" font="default" size="100%">Plathe, K. L. von der Kammer, F. Hassellov, M. Moore, J. Murayama, M. Hofmann, T. Hochella, M. F., Jr.</style></notes></record></records></xml>