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Monitoring esterů kyseliny ftalové v zemědělských půdách
 Langová, Radka
The aim of the study was monitoring of two of phthalic acid esters in agricultural soils in the Czech Republic for free years: dibutyl phthalate (DBP) and di 2 ethylhexyl phthalate (DEHP). The monitoring of the phthalate content took place in twelve regions of the Czech Republic. Soil sampling was carried out using the zig-zag pattern from topsoil and subsoil. The soil samples were taken from the following cultures: arable land, permanent grassland and hop gardens. Concentration levels were established by means of high performance liquid chromatography with UV detection. Samples were extracted using sonication and mixture of acetone-hexane (1:1). The established concentrations of the esters of phthalic acid were as follows: for dibutyl phthalate from 0,02 to 1,78 mg.kg-1 dry weight; for di 2 ethyhexyl phthalate from 0,06 to 2,22 mg.kg-1 dry weight; total concentration of both phthalates then ranged from 0,24 to 2,83 mg.kg-1 dry weight. When comparing the concentration levels established in the present study with the values set by the Ministry of Environment of the Czech Republic and stated in its Guideline stemming from the RSL (Regional Screening Levels) published by the United States' Environmental Protection Agency (USEPA), none of these values were exceeded in this study.
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