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Availability of applied heavy metals as a function of type of soil material and metal source

Journal Article · · Soil Sci.; (United States)
;
The authors applied the heavy metals Cd, Cu, Ni, and Zn, as sulfate salts and as lime-stabilized, digested Washington, D.C., sewage sludge, to surface and subsurface horizon materials of six Maryland soils in the greenhouse. Rates of metal addition were equivalent to field rates of 224 metric tons (t)/ha of the sludge. Corn (Zea mays L.) was grown for 30 d, 13 mo after treatment application, and the tissue was analyzed for metals. Yields of plant material were generally enhanced by sludge and suppressed by metal salts. Tissue levels of both Cd and Zn were considerably elevated. In general the sludge did not elevate tissue Cu and Ni, whereas metal salts slightly elevated tissue Cu and Ni with some soil materials. An interaction between type of soil material and source of metal on plant tissue metal levels was observed. Essentially inert soil materials tended to produce tissue with the highest metal levels when metal-salt-treated, but with the lowest metal levels when sludged. Conversely, reactive soil materials, tended to produce tissue with relatively lower levels of metals than other materials when metal-salt-treated, but with relatively high levels when sludged.
Research Organization:
Univ. of Maryland, College Park
OSTI ID:
6293969
Journal Information:
Soil Sci.; (United States), Journal Name: Soil Sci.; (United States) Vol. 140:1; ISSN SOSCA
Country of Publication:
United States
Language:
English

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Related Subjects

510200* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BIOLOGICAL AVAILABILITY
CADMIUM
CEREALS
COMPARATIVE EVALUATIONS
COPPER
DISTRIBUTION
ELEMENTS
FEDERAL REGION III
GRASS
GROUND DISPOSAL
GROWTH
MAIZE
MANAGEMENT
MARYLAND
METALS
NICKEL
NORTH AMERICA
OXYGEN COMPOUNDS
PLANT GROWTH
PLANTS
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOILS
STIMULATION
SULFATES
SULFUR COMPOUNDS
TISSUE DISTRIBUTION
TRANSITION ELEMENTS
UPTAKE
USA
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
ZINC