Trace metal chemistry in arid-zone field soils amended with sewage sludge: I. Fractionation of Ni, Cu, Zn, Cd, and Pb in solid phases

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Soil Sci. Soc. Am. J.; (United States)

DOI:https://doi.org/10.2136/sssaj1982.03615995004600020009x· OSTI ID:5534597

Sposito, G; Lund, L J; Chang, A C

The surface horizons of two arid-zone fields soils that had received amendments of either liquid or dried, anaerobically digested sewage sludge for 4 years were sampled to determine the forms of selected trace metals in the solid phase. The soils had been amended with sludge twice annually at rates of 0, 22.5, 45.0, or 90.0 tons . ha/sup -1/ . year/sup -1/. Barley and sorghum had been grown on the soils in randomized experimental plots. The soil samples were analyzed for total Ni, Cu, Zn, Cd, and Pb and were fractionated by sequential extraction to estimate the quantities of these metals in ''exchangeable,'' ''sorbed,'' ''organic,'' ''carbonate,'' and ''sulfide'' forms. The total contents of the five metals in the two field soils were governed by the total content of the metals in the sludges applied and by the rate of sludge application. The accumulation of metals in the surface horizons of field plots receiving liquid sludge was less than that in the plots receiving composted sludge, possibly because of a lesser reduction in soil bulk density resulting from sludge applications. The percentage of the total metal content in exchangeable and sorbed forms was very low, averaging between 1.1 and 3.7% for all of the metals regardless of the type of soil, the form of sludge applied, or the sludge application rate. The application of sludge tended to reduce the sulfide fraction and to increase the organic and carbonate fractions of all five trace metals. At the highest rate of sludge application, the predominant forms of the metals were: Ni, sulfide; Cu, organic; and Zn, Cd, and Pb, carbonate.

• Research Organization: University of California, Riverside
• OSTI ID: 5534597
• Journal Information: Soil Sci. Soc. Am. J.; (United States), Journal Name: Soil Sci. Soc. Am. J.; (United States) Vol. 46:2; ISSN SSSJD
• Country of Publication: United States
• Language: English

Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ARID LANDS
BARLEY
BUILDUP
CADMIUM
CARBON COMPOUNDS
CARBONATES
CEREALS
CHALCOGENIDES
CHEMICAL STATE
CHEMISTRY
COPPER
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL EFFECTS
FIELD TESTS
FRACTIONATION
GRAMINEAE
GRASS
GROUND DISPOSAL
LEAD
MANAGEMENT
METALS
NICKEL
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLANTS
SAMPLING
SEPARATION PROCESSES
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOIL CHEMISTRY
SOILS
SORGHUM
SULFIDES
SULFUR COMPOUNDS
TESTING
TRACE AMOUNTS
TRANSITION ELEMENTS
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
ZINC