Bioavailability of arsenic, cadmium, iron and zinc in leafy vegetables amended with urban particulate matter suspension
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
23044833
DOI
10.1002/jsfa.5903
Knihovny.cz E-resources
- Keywords
- PBET, bioavailability, risk elements, urban particulate matter,
- MeSH
- Arsenic analysis MeSH
- Beta vulgaris chemistry MeSH
- Biological Availability MeSH
- Biomass MeSH
- Diet MeSH
- Cadmium analysis MeSH
- Plant Roots MeSH
- Soil Pollutants analysis MeSH
- Air Pollutants analysis MeSH
- Humans MeSH
- Plant Leaves * MeSH
- Particulate Matter analysis MeSH
- Soil chemistry MeSH
- Lactuca chemistry MeSH
- Trace Elements analysis toxicity MeSH
- Intestine, Small MeSH
- Stomach MeSH
- Iron analysis MeSH
- Zinc analysis MeSH
- Check Tag
- Humans MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Arsenic MeSH
- Cadmium MeSH
- Soil Pollutants MeSH
- Air Pollutants MeSH
- Particulate Matter MeSH
- Soil MeSH
- Trace Elements MeSH
- Iron MeSH
- Zinc MeSH
BACKGROUND: Urban particulate matter (PM) can affect green plants either via deposition on the above-ground biomass, where the contaminants can penetrate the leaf surface, or indirectly via soil-root interaction. This experiment assessed the potential risk of PM-derived risk elements contained in vegetables. The bioavailable portions of arsenic (As), cadmium (Cd), iron (Fe), and zinc (Zn) in leafy vegetables amended by PM via soil and/or foliar application were investigated in a model pot experiment, in which lettuce and chard were cultivated. RESULTS: By using the physiologically based extraction test simulating in vitro human digestive processes in the stomach and small intestine, the bioavailable portions of toxic elements from PM-amended plant biomass were extracted. Extractable portions of elements by a simulated gastric solution from biomass decreased for lettuce in the order Zn > Cd > As > Fe; while for chard, the order was As > Zn > Cd > Fe. No significant effects of PM physical fractions or soil were observed. CONCLUSIONS: Although the bioavailable element portions in the PM samples were lower compared to plants, the bioavailable element contents in foliar PM-amended plant leaves exceeded the control and soil PM amendment levels, even after biomass washing.
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