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Uptake of SigmaDDT, arsenic, cadmium, copper, and lead by lettuce and radish grown in contaminated horticultural soils.
J Agric Food Chem. 2008 Aug 13; 56(15):6584-93.JA

Abstract

Horticultural soils can contain elevated concentrations of selected trace elements and organochlorine pesticides as a result of long-term use of agrichemicals and soil amendments. A glasshouse study was undertaken to assess the uptake of weathered SigmaDDT {sum of the p, p'- and o, p-isomers of DDT [1,1,1-trichloro-2,2- bis(p-chlorophenyl)ethane], DDE [1,1-dichloro-2,2- bis(p-chlorophenyl)ethylene] and DDD[1,1-dichloro-2,2- bis(p-chlorophenyl)ethane]}, arsenic (As), cadmium (Cd), copper (Cu), and lead (Pb) residues by lettuce (Lactuca sativa) and radish (Raphanus sativus) from field-aged New Zealand horticultural soils. Concentrations of SigmaDDT, DDT, DDE, Cd, Cu, and Pb in lettuce increased with increasing soil concentrations. In radish, similar relationships were observed for SigmaDDT, DDE, and Cu. The bioaccumulation factors were less than 1 with the exception of Cd and decreased with increasing soil concentrations. Lettuce Cd concentrations for plants grown on four out of 10 assayed soils were equivalent to or exceeded the New Zealand food standard for leafy vegetables of 0.1 mg kg (-1) fresh weight. Concentrations of As, Pb, and SigmaDDT did not exceed available food standards. Overall, these results demonstrate that aged residues of SigmaDDT, As, Cd, Cu, and Pb in horticultural soils have remained phytoavailable. To be protective of human health, site-specific risk assessments and soil guideline derivations for residential settings with vegetable gardens need to consider the produce consumption pathway.

Authors+Show Affiliations

The University of Waikato, Private Bag 3105, Environment Waikato, P.O. Box 4010, HortResearch, Ruakura Research Centre, Private Bag 3123, and Hill Laboratories, Private Bag 3205, Hamilton, New Zealand. sally.gaw@canterbury.ac.nzNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18624413

Citation

Gaw, S K., et al. "Uptake of SigmaDDT, Arsenic, Cadmium, Copper, and Lead By Lettuce and Radish Grown in Contaminated Horticultural Soils." Journal of Agricultural and Food Chemistry, vol. 56, no. 15, 2008, pp. 6584-93.
Gaw SK, Kim ND, Northcott GL, et al. Uptake of SigmaDDT, arsenic, cadmium, copper, and lead by lettuce and radish grown in contaminated horticultural soils. J Agric Food Chem. 2008;56(15):6584-93.
Gaw, S. K., Kim, N. D., Northcott, G. L., Wilkins, A. L., & Robinson, G. (2008). Uptake of SigmaDDT, arsenic, cadmium, copper, and lead by lettuce and radish grown in contaminated horticultural soils. Journal of Agricultural and Food Chemistry, 56(15), 6584-93. https://doi.org/10.1021/jf073327t
Gaw SK, et al. Uptake of SigmaDDT, Arsenic, Cadmium, Copper, and Lead By Lettuce and Radish Grown in Contaminated Horticultural Soils. J Agric Food Chem. 2008 Aug 13;56(15):6584-93. PubMed PMID: 18624413.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Uptake of SigmaDDT, arsenic, cadmium, copper, and lead by lettuce and radish grown in contaminated horticultural soils. AU - Gaw,S K, AU - Kim,N D, AU - Northcott,G L, AU - Wilkins,A L, AU - Robinson,G, Y1 - 2008/07/15/ PY - 2008/7/16/pubmed PY - 2008/9/30/medline PY - 2008/7/16/entrez SP - 6584 EP - 93 JF - Journal of agricultural and food chemistry JO - J Agric Food Chem VL - 56 IS - 15 N2 - Horticultural soils can contain elevated concentrations of selected trace elements and organochlorine pesticides as a result of long-term use of agrichemicals and soil amendments. A glasshouse study was undertaken to assess the uptake of weathered SigmaDDT {sum of the p, p'- and o, p-isomers of DDT [1,1,1-trichloro-2,2- bis(p-chlorophenyl)ethane], DDE [1,1-dichloro-2,2- bis(p-chlorophenyl)ethylene] and DDD[1,1-dichloro-2,2- bis(p-chlorophenyl)ethane]}, arsenic (As), cadmium (Cd), copper (Cu), and lead (Pb) residues by lettuce (Lactuca sativa) and radish (Raphanus sativus) from field-aged New Zealand horticultural soils. Concentrations of SigmaDDT, DDT, DDE, Cd, Cu, and Pb in lettuce increased with increasing soil concentrations. In radish, similar relationships were observed for SigmaDDT, DDE, and Cu. The bioaccumulation factors were less than 1 with the exception of Cd and decreased with increasing soil concentrations. Lettuce Cd concentrations for plants grown on four out of 10 assayed soils were equivalent to or exceeded the New Zealand food standard for leafy vegetables of 0.1 mg kg (-1) fresh weight. Concentrations of As, Pb, and SigmaDDT did not exceed available food standards. Overall, these results demonstrate that aged residues of SigmaDDT, As, Cd, Cu, and Pb in horticultural soils have remained phytoavailable. To be protective of human health, site-specific risk assessments and soil guideline derivations for residential settings with vegetable gardens need to consider the produce consumption pathway. SN - 1520-5118 UR - https://www.unboundmedicine.com/medline/citation/18624413/Uptake_of_SigmaDDT_arsenic_cadmium_copper_and_lead_by_lettuce_and_radish_grown_in_contaminated_horticultural_soils_ L2 - https://doi.org/10.1021/jf073327t DB - PRIME DP - Unbound Medicine ER -