Mobility of sludge-borne 3,3'-dichlorobenzidine in soil columns

Journal Article · · J. Environ. Qual.; (United States)

OSTI ID:6217792

Chung, D Y; Boyd, S A

Fate of the carcinogen 3,3'-dichlorobenzidine (DCB) in sludge-amended soil was evaluated. Carbon-14-labeled DCB was used as a tracer to examine mineralization and mobility of DCB present in sludge. Dichlorobenzidine was shown to be very persistent in soil and sludge-amended soil with <2% of the added (/sup 14/C)DCB evolved as /sup 14/CO/sub 2/ during a 182-d incubation. Mobility of DCB was evaluated by using soil columns (5 by 45 cm) that were irrigated with 2.54 cm water d/sup -1/ for 84 d. The total /sup 14/C recovered in leachate water was from 0.16 to 0.063% of the total /sup 14/C added to the top 15 cm of the soil column at time zero. The strong binding of DCB to soil constituents rendered it highly immobile despite being placed in a sandy soil that was irrigated with large amounts of water. However, some finite, albeit small, quantity was apparently leached through the soil profile at a relatively constant rate. The immobilization of DCB presumably results from the formation of humus bound DCB residues and from its low water solubility.

• Research Organization: Michigan State Univ., East Lansing
• OSTI ID: 6217792
• Journal Information: J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 16:2; ISSN JEVQA
• Country of Publication: United States
• Language: English

Related Subjects

510101* -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
54 ENVIRONMENTAL SCIENCES
AMINES
AROMATICS
BENZIDINE
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON 14
CARBON ISOTOPES
CHEMISTRY
DISSOLUTION
ENVIRONMENTAL TRANSPORT
EVEN-EVEN NUCLEI
GROUND DISPOSAL
GROUND WATER
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
ISOTOPES
LEACHING
LIGHT NUCLEI
MANAGEMENT
MASS TRANSFER
NUCLEI
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
RADIOISOTOPES
SEPARATION PROCESSES
SEWAGE
SEWAGE SLUDGE
SLUDGES
SOIL CHEMISTRY
TRACER TECHNIQUES
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER
YEARS LIVING RADIOISOTOPES