In the Bs horizon, however, XAS and XRF findings strongly pointed to the presence of PIA acting as an effective adsorbent for As. In one embodiment, the compsosition is prepared by reacting in an aqueous solution a calcium oxide and/or hydroxide, an amino acid, and a soluble metal sulfate salt at a ratio sufficient to allow. In the surface layers a considerable fraction of As was also associated with a recalcitrant phase, probably CCA-treated woody debris, and the remainder was associated with (hydr)oxide-like solid phases. Usha and Ramasami 107 have revealed that chromium sulfate crosslinked collagen fibrils show significant increase in peak temperature as well as enthalpy alteration when compared to native. Rules for naming inorganic ionic and covalent types of. Density is given for the actual state at 25☌ and for liquid phase at melting point temperature. Throughout the soil, As was present as As(V). Physical constants for more than 280 common inorganic compounds. Deeper in the profile Cr appeared to be largely in the form of extractable (hydr)oxides.
In the surface layers, Cr, as Cr(III), was partitioned between a mixed Fe(III)/Cr(III) solid phase that formed upon the Fe(II) application (25-50%) and a recalcitrant phase (50-75%) more » likely consisting of organic material such as residual CCA-treated wood. Chemical Formula Type of Compound: Ionic or Covalent Compound Name 21) CdBr2 I Cadmium (II) bromide 22) Cr (Cr2O7)3 I chromium (VI) dichromate 23) SBr2 C. Potassium chromium sulfate has been used in the leather industry for tanning the hides (nowadays it is replaced by basic chromium sulfate, Cr(OH)SO 4). High oxalate-soluble Al concentrations in the Bs horizon of the soil and micro-XRD data indicated the presence of short-range ordered aluminosilicates (i.e. Potassium chromium sulfate, KCr(SO 4) 2 12H 2 O, or chromium alum (1), forms violett octaeders and is highly soluble in water. Iron was enriched in the upper 30 cm due to a previous one-time treatment of the soil with Fe(II). This research combined the use of selective extractions and x-ray spectroscopy to examine the fate of As and Cr in a podzolic soil contaminated by chromated copper arsenate (CCA).
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