Effect of sulfate on the availability of cadmium

Conference · Sat Feb 01 00:00:00 EST 1986 · Soil Sci.; (United States)

OSTI ID:5621790

Bingham, F T; Sposito, G; Strong, J E

The study consisted of a greenhouse experiment with Swiss chard (Beta vulgaris Cicla) as the biological indicator of Cd in two sets of an acid soil treated with 0.25, 1.00, and 2.50 mg Cd kg/sup -1/ in combination with four rates of Na/sub 2/SO/sub 4/ ranging up to 30 mol m/sup -3/ in the saturation extract (H/sub 2/O). One set was limed with CaCO/sub 3/; the other was left as an acid soil. The content of Cd in shoots of Swiss chard after 9 wk postemergence was taken as the measure of available Cd. Immediately after the plants were harvested, the soil solution was analyzed for cations and anions; these data were taken as input data to chemically speciate Cd in the soil solution. The total concentration of Cd in soil solution, Cd/sub T/, was found to consist of principally Cd/sup 2 +/, CdCl/sup +/, and CdSO/sub 4//sup 0/ in the unlimed soil. The speciation of the soil solution for the limed soil show Cd/sub T/ to comprise the above plus CdCO/sub 3//sup +/. Regression analysis of leaf Cd in relation to Cd/sub T/, Cd/sup 2 +/, a/sub Cd/sup 2 +//, CdCl/sup +/, CdSO/sub 4//sup 0/, and CdCO/sup 30/ showed leaf Cd to be primarily a function of the a/sub Cd/sup 2 +// in the acid series and Cd/sub T/ in the alkaline series. The availability of soil solution Cd as judged by the Cd concentration of Swiss chard (shoot) was substantially greater for the unlimed soil.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 5621790
• Journal Information: Soil Sci.; (United States), Vol. 141:2; Conference: American industrial hygiene conference, Dallas, TX, USA, 18-23 May 1986
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
CADMIUM
BIOLOGICAL AVAILABILITY
BIOLOGICAL INDICATORS
BIOLOGICAL LOCALIZATION
DOSE-RESPONSE RELATIONSHIPS
GREENHOUSES
LIMING
REGRESSION ANALYSIS
RESPONSE MODIFYING FACTORS
SOIL CHEMISTRY
SULFATES
UPTAKE
VEGETABLES
BUILDINGS
CHEMISTRY
ELEMENTS
FOOD
MATHEMATICS
METALS
OXYGEN COMPOUNDS
PLANTS
STATISTICS
SULFUR COMPOUNDS
510200* - Environment
Terrestrial- Chemicals Monitoring & Transport- (-1989)