Browsing by Author "Pratt, P. F."

Now showing items 1-3 of 3

    • Evidence for movement of heavy metals in a soil irrigated with untreated wastewater 
      Schirado, T.; Vergara F., Inés; Schalscha B., Eduardo; Pratt, P. F. (American Society of Agronomy, 1986)
      A Vertisol irrigated for over five decades with an untreated municipal wastewater had elevated levels of DTPA extractable Cd, Co, Cu, Mn, Ni, and Zn in the cultivated layer of the soil as compared to lower layers. Total ...
    • Extraction by barium salts of heavy metals from two chilean soils 
      Ahumada Torres, Aída Inés de Lourdes; Schalscha B., Eduardo; Pratt, P. F.; Mattigod, S. V. (Soil Science Society of America, 1984)
      Extraction of Cd,Cu, Ni and Zn by BaCl(Ba(ClO-4)2 solutions from El Recuerdo(Vertisol) and Puerto Octay (Andept)soils was used to measure the amounts of metals remaining extractable during a 60-d storage period under air-dry ...
    • Fractionation of Zn, Cu, Cr, and Ni in wastewaters, solids and in soil. 
      Schalscha B., Edduardo; Morales, M.; Ahumada Torres, Aída Inés de Lourdes; Schirado, T.; Pratt, P. F. (Universita degli Studi di Pisa, Istituto di Chimica Agraria, 1980)
      The application of wastewaters and sludge to agricultural land as a means of disposing of the wastes has been practiced for many decades. Many recent reports (DOWDY and LARSON, 1975; LUND et al., 1976; PAGE, 1974; SCHALSCHA ...