Distribution of phthalic acid esters in agricultural plants and soil
2011
Zornikova, G.,Mendelova Univ., Brno (Czech Republic). Ustav Technologie Potravin | Jarosova, A. | Hrivna, L.
The study observed the occurrence of di-n-butyl phthalate (DBP) and di-(2-ethylhexyl) phthalate (DEHP) in the soil and agricultural crops (Triticum aestivum, Brassica napus, Zea mays) and their distribution to the individual parts. Four locations in central Moravia, Czech Republic, were selected for the experiment. At two locations (L1, L2) winter wheat was grown, at the third location (L3) winter oilseed rape, and at the fourth location (L4) flint corn. Soil samples (n = 72) and whole plant samples (n = 78) were collected during the vegetation. The aboveground and underground parts of plants, ears, siliques and seeds were analyzed separately. The values of DBP in soil at all areas ranged from 0.28 to 1.59 mg/kg of dry matter and DEHP from less than 0.03 to 0.73 mg/kg of dry matter. The soil at the L4 site, which was the most fertilized with organic fertilizers, especially manure, was detected significantly to show the highest values of both the phthalic acid esters observed (DBPL4 1.59+/-0.07 mg/kg of dry matter, DEHPL4 0.73+/-0.18 mg/kg of dry matter). Average concentrations measured in underground parts of the crops ranged from 1.68 to 14.26 mg/kg of dry matter for DBP, and 0.12 to 10.34 mg/kg of dry matter for DEHP. Values detected in aboveground parts were 0.03 to 8.84 mg/kg of dry matter for DBP, and 0.25 to 4.59 mg/kg of dry matter for DEHP. Average values of DBP in final products ranged from 0.05 to 0.83 mg/kg of dry matter, and from less than 0.06 to 0.98 mg/kg of dry matter for DEHP.
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