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Toxicity and bioaccumulation of biosolids-borne triclosan in food crops
- Source :
- Environmental toxicology and chemistry. 31(9)
- Publication Year :
- 2011
-
Abstract
- Triclosan (TCS) is an antimicrobial compound commonly found in biosolids. Thus, plants grown in biosolids-amended soil may be exposed to TCS. We evaluated the plant toxicity and accumulation potential of biosolids-borne TCS in two vegetables (lettuce and radish) and a pasture grass (bahia grass). Vegetables were grown in growth chambers and grass in a greenhouse. Biosolids-amended soil had TCS concentrations of 0.99, 5.9, and 11 mg/kg amended soil. These TCS concentrations represent typical biosolids containing concentrations of 16 mg TCS/kg applied at agronomic rates for 6 to 70 consecutive years, assuming no TCS loss. Plant yields (dry wt) were not reduced at any TCS concentration and the no observed effect concentration was 11 mg TCS/kg soil for all plants. Significantly greater TCS accumulated in the below-ground biomass than in the above-ground biomass. The average bioaccumulation factors (BAFs) were 0.43 ± 0.38 in radish root, 0.04 ± 0.04 in lettuce leaves, 0.004 ± 0.002 in radish leaves, and
- Subjects :
- Crops, Agricultural
Biosolids
Health, Toxicology and Mutagenesis
Biomass
Pasture
Zea mays
Raphanus
chemistry.chemical_compound
Soil
Anti-Infective Agents
Environmental Chemistry
Soil Pollutants
Paspalum
geography
geography.geographical_feature_category
fungi
food and beverages
Antimicrobial compound
Lettuce
Triclosan
Plant Leaves
Horticulture
Agronomy
chemistry
Bioaccumulation
Toxicity
Soybeans
Edible Grain
Subjects
Details
- ISSN :
- 15528618
- Volume :
- 31
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Environmental toxicology and chemistry
- Accession number :
- edsair.doi.dedup.....21a8a2b1cb538bb093c0b38c2ea6a34f