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Title: The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils

Abstract

A field study was conducted to assess the phytoavailability of Cd in long-term biosolids-amended plots managed at high and low pH. The experiment, established 13 to 15 yr prior to the present cropping, on a Christiana fine sandy loam soil used a variety of biosolids. Two of the biosolids had total Cd concentrations of 13.4 and 210 mg kg{sup {minus}1}. A Cd salt treatment, with Cd added to soil at a rate equivalent to the Cd added by the higher Cd biosolids applied at 100 Mg ha{sup {minus}1}, was also included. The lettuce (Lactuca sativa var. longifolia) cultivar (Paris Island Cos) used in the initial study was also used in the current study. Lettuce Cd was compared between treatments, and in relation to the soil Cd/soil organic C (OC) ratio. There has been no significant increase in plant Cd since the initial cropping. With 16% of the biosolids added OC remaining, lettuce grown on the soil amended with the more contaminated biosolids was not different than that of the initial cropping. Further, significantly less Cd was taken up by lettuce grown on biosolids-amended soil than lettuce grown on soil amended with equivalent rates of Cd salt. The Cd concentration inmore » lettuce grown in the low Cd biosolids treatment was not different from the control. These results indicate that the potential hazards associated with food chain transfer of biosolids-applied Cd are substantially lower than equivalent Cd salt treatments, and that the hazards do not increase over time.« less

Authors:
;  [1];  [2];  [3]
  1. Dept. of Agriculture, Beltsville, MD (United States)
  2. Univ. of Maryland, College Park, MD (United States). Dept. of Agronomy
  3. Environmental Protection Agency, Cincinnati, OH (United States). National Risk Management Research Lab.
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
290134
Resource Type:
Journal Article
Journal Name:
Journal of Environmental Quality
Additional Journal Information:
Journal Volume: 27; Journal Issue: 5; Other Information: PBD: Sep-Oct 1998
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; BIOLOGICAL AVAILABILITY; CADMIUM; LETTUCE; SOILS; SEWAGE SLUDGE; GROUND DISPOSAL; ENVIRONMENTAL EFFECTS; BIOLOGICAL ACCUMULATION; FOOD CHAINS

Citation Formats

Brown, S L, Chaney, R L, Angle, J S, and Ryan, J A. The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils. United States: N. p., 1998. Web. doi:10.2134/jeq1998.00472425002700050012x.
Brown, S L, Chaney, R L, Angle, J S, & Ryan, J A. The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils. United States. https://doi.org/10.2134/jeq1998.00472425002700050012x
Brown, S L, Chaney, R L, Angle, J S, and Ryan, J A. 1998. "The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils". United States. https://doi.org/10.2134/jeq1998.00472425002700050012x.
@article{osti_290134,
title = {The phytoavailability of cadmium to lettuce in long-term biosolids-amended soils},
author = {Brown, S L and Chaney, R L and Angle, J S and Ryan, J A},
abstractNote = {A field study was conducted to assess the phytoavailability of Cd in long-term biosolids-amended plots managed at high and low pH. The experiment, established 13 to 15 yr prior to the present cropping, on a Christiana fine sandy loam soil used a variety of biosolids. Two of the biosolids had total Cd concentrations of 13.4 and 210 mg kg{sup {minus}1}. A Cd salt treatment, with Cd added to soil at a rate equivalent to the Cd added by the higher Cd biosolids applied at 100 Mg ha{sup {minus}1}, was also included. The lettuce (Lactuca sativa var. longifolia) cultivar (Paris Island Cos) used in the initial study was also used in the current study. Lettuce Cd was compared between treatments, and in relation to the soil Cd/soil organic C (OC) ratio. There has been no significant increase in plant Cd since the initial cropping. With 16% of the biosolids added OC remaining, lettuce grown on the soil amended with the more contaminated biosolids was not different than that of the initial cropping. Further, significantly less Cd was taken up by lettuce grown on biosolids-amended soil than lettuce grown on soil amended with equivalent rates of Cd salt. The Cd concentration in lettuce grown in the low Cd biosolids treatment was not different from the control. These results indicate that the potential hazards associated with food chain transfer of biosolids-applied Cd are substantially lower than equivalent Cd salt treatments, and that the hazards do not increase over time.},
doi = {10.2134/jeq1998.00472425002700050012x},
url = {https://www.osti.gov/biblio/290134}, journal = {Journal of Environmental Quality},
number = 5,
volume = 27,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 1998},
month = {Tue Sep 01 00:00:00 EDT 1998}
}