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Gewählte Publikation:

Jelecevic, A; Sager, M; Vollprecht, D; Liebhard, P.
(2021): HEAVY METAL CONTENT OF LACTUCA SATIVA L. GROWN ON SOILS FROM HISTORIC MINING AND SMELTING SITES IN STYRIA (AUSTRIA), DETERMINED BY THE ELECTRO--ULTRAFILTRATION (EUF) METHOD AND KINETIC MODELS
J ELEMENTOL. 2021; 26(3): 553-571. FullText FullText_BOKU

Abstract:
Lettuce seedlings (Lactuca sativa L.) were grown in pot experiments on metalliferous soils sam-pled close to mining and smelting sites in the Province of Styria (Austria), in order to investi-gate effects of mineral fertilizer (NPK and PK). Additionally, soil samples were collected and extracted by modified electro-ultrafiltration (EUF) in five fractions after using diethylenetri-aminepentaacetic acid (DTPA) to obtain the potentially available metals and to describe the release mechanisms with kinetic models. The NPK and PK fertilizer application decreased the Pb content in plants below the maximum threshold set up for human nutrition, but Cd increased slightly. Bioconcentration factors (BCF) for Cd were higher than for Pb and, according to the translocation factor (TSF), leaves contained more Cd but less Pb than corresponding roots. The largest heavy metal amounts of the metalliferous soils were released in the first two fractions of the EUF method. Closest fits in terms of the coefficient of determination (R2) and recalculated results were obtained from the 2nd order polynomial model (y = a + bt + ct2). In contrast to Cd, a statistically significant (P <= 0.05) relationship between release rate b of the 2nd order polynomial model and the metal concentration in plants was achieved for Ni in both leaves and roots and for Pb only in leaves.
Autor*innen der BOKU Wien:
Jelecevic Anto
Liebhard Peter
BOKU Gendermonitor:


Find related publications in this database (Keywords)
lettuce
heavy metals
fertilizer
EUF method
kinetic model


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