Perchlorate Accumulation in Forage and Edible Vegetation
- 24 December 2004
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of Agricultural and Food Chemistry
- Vol. 53 (2), 369-373
- https://doi.org/10.1021/jf0493021
Abstract
The accumulation of perchlorate in vegetation is becoming a concern, with increasing numbers of sites reporting the presence of perchlorate in groundwater and surface water. This study investigated potential perchlorate uptake and distribution by a variety of forage and edible crops in both the laboratory and the field. Perchlorate concentrations in soybean leaves grown in the greenhouse were significantly higher than perchlorate concentrations in soybean seeds and pods. Perchlorate concentrations in alfalfa grown in sand were significantly lower than those in alfalfa grown in soil. The concentration of perchlorate in tomato was lower in the fruit than the leaves. Commercially grown wheat and alfalfa samples all contained perchlorate, 0.72-8.6 mg/kg of fresh weight (FW) in the wheat stems, 0.71-4.4 mg/kg of FW in the wheat heads, and 2.9 mg/kg of FW in alfalfa. All field garden samples tested (including cucumber, cantaloupe, and tomato) that were irrigated with perchlorate-tainted water contained perchlorate at various concentrations ranging from 0.040 to 1.65 mg/kg of FW. Bioconcentration factors (BCF), ratios of plant fresh weight concentrations to estimated or measured groundwater concentrations [(microg/kg of FW)/microg/L], were all in the same order of magnitude ranging from 215 +/- 126 for wheat stems to 233 +/- 264 for wheat heads and to 380 +/- 89 for alfalfa. BCF for garden fruit samples were much lower (0.5-20). Results from this study highlight the potential for perchlorate exposure by routes other than drinking water.This publication has 10 references indexed in Scilit:
- Extraction, Cleanup, and Analysis of the Perchlorate Anion in Tissue SamplesBulletin of Environmental Contamination and Toxicology, 2002
- Determination of Perchlorate in Tobacco Plants and Tobacco ProductsEnvironmental Science & Technology, 2001
- Preliminary assessment of perchlorate in ecological receptors at the Longhorn Army Ammunition Plant (LHAAP), Karnack, Texas.Ecotoxicology, 2001
- Determination of perchlorate at parts-per-billion levels in plants by ion chromatographyJournal of Chromatography A, 2000
- Phytotransformations of Perchlorate Contaminated WatersEnvironmental Technology, 2000
- Perchlorate uptake by salt cedar (Tamarix ramosissima) in the Las Vegas Wash riparian ecosystemScience of The Total Environment, 2000
- Plant-Mediated Transformation of Perchlorate into ChlorideEnvironmental Science & Technology, 1999
- Phytotransformation of Perchlorate and Identification of Metabolic Products inMyriophyllum aquaticumInternational Journal of Phytoremediation, 1999
- Perchlorate Chemistry: Implications for Analysis and RemediationBioremediation Journal, 1998
- A Review of Chlorate- and Perchlorate-Respiring MicroorganismsBioremediation Journal, 1998