Plant uptake of sludge-borne PCBs
Plant uptake of sludge-borne polychlorinated biphenyls (PCBs) (similar to Aroclor 1248) was evaluated in a greenhouse study with two food-chain crops and a grass species. Polychlorinated biphenyl loading to two soils was varied in one experiment by adding different rates of a municipal sewage sludge heavily contaminated (52 mg/kg) with PCBs. In a second experiment, Aroclor 1248 was spiked into unamended soils or soils amended with another sludge containing <1mg/kg PCBs. Analysis of PCBs was by GC/MS with a reliable detection limit in plants of 20 microg/kg for individual chlorinated classes (tri, tetra-, and pentachlorobiphenyls) and total PCBs. Only carrots (Daucus carota) were contaminated with PCBs, and contamination was restricted to carrot peels. Current USEPA guidelines for land application of sludges based on sludge PCB content are shown to be extremely conservative.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- PB-91-177287/XAB; EPA--600/J-90/447
- Resource Type:
- Technical Report
- Resource Relation:
- Other Information: Pub. in Jnl. of Environmental Quality, v19 p113-118 1990. Prepared in cooperation with New Mexico State Univ., Las Cruces
- Research Org:
- Environmental Protection Agency, Cincinnati, OH (United States). Risk Reduction Engineering Lab.
- Country of Publication:
- United States
- 54 ENVIRONMENTAL SCIENCES; 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; CHLORINATED AROMATIC HYDROCARBONS; ROOT ABSORPTION; FOOD CHAINS; CONTAMINATION; SEWAGE SLUDGE; GROUND DISPOSAL; SOILS; LAND POLLUTION; MUNICIPAL WASTES; ABSORPTION; AROMATICS; BIOLOGICAL MATERIALS; BIOLOGICAL WASTES; HALOGENATED AROMATIC HYDROCARBONS; MANAGEMENT; MATERIALS; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; POLLUTION; SEWAGE; SLUDGES; UPTAKE; WASTE DISPOSAL; WASTE MANAGEMENT; WASTES 540220* -- Environment, Terrestrial-- Chemicals Monitoring & Transport-- (1990-); 560300 -- Chemicals Metabolism & Toxicology