| 6 | Trace elements migrating from tailings to rock varnish laminated sediments in an old mining region from Nelson,Nevada,USA显示文摘The dispersion and influence of soluble and particulate trace elements(TEs)present in the materials from abandoned mines is an imminent problem on terrestrial and aquatic environments.The goal of this research is to provide a broader view of such transport,assessing particle size distribution and TE interactions(e.g.,scavenging)with mine tailings and locally derived sediments transported by water in arid region.Sand grains from wash sediment were collected from a dry ephemeral wash in Nelson,Nevada where the Techatticup Mine and Mill worked between 1850 and 1960.Samples were evaluated to determine the association and behavior of certain metals and metalloids including aluminum,arsenic,barium,cadmium,copper,chromium,iron,manganese,lead,selenium,vanadium,and zinc to rock varnish laminated sediments.Results show that some metals and metalloids were more concentrated on larger particles whereas others indicated the opposite tendency.For example,As was greatest on silt fractions and least on coarse fractions,while Se was detected only on silts.Cr,Cu,Fe,Mn,Pb,and Zn concentrations all increased with decreasing particle size(silt>sand>coarse),whereas Al,Ba,and V showed the opposite trend(silt | Douglas B.Sims Amanda C.Hudson John E.Keller Michael Strange Andressa Cristhy Buch David Ferrari Giavanna M.Fernandez Juan Garcia-Hernandez Bailey D.Kesl Sean Torres | 2022 | International Journal of Sediment Research2022，37，2： | 1 |
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