The iodine content in areas with enhanced landscape management in the Czech Republic

0559374 - ÚACH 2022 RIV PL eng J - Článek v odborném periodiku
Konečný, R. - Šeda, M. - Fiala, K. - Švehla, Jaroslav - Macháčková, H. - Trávníček, J.
The iodine content in areas with enhanced landscape management in the Czech Republic.
Journal of Elementology. Roč. 25, č. 3 (2020), s. 1233-1242. ISSN 1644-2296. E-ISSN 1644-2296
Institucionální podpora: RVO:61388980
Klíčová slova: iodine * soil * soil water * grass * protected landscape areas * exploitation
Obor OECD: Inorganic and nuclear chemistry
Impakt faktor: 0.949, rok: 2020
Způsob publikování: Open access

Iodine is an essential trace element for animals. The major sources of iodine for animals are contained in feed and water, in which the iodine content depends on its amount in the given environment. The aim of this study was to analyse and evaluate the iodine content in soil, soil water, grass mass, and also to assess the effect of grassland exploitation on the iodine content in the Sumava and Jeseniky Protected Landscape Areas (PLAs) in the Czech Republic. The soil type in both PLAs was Modal Cambisol. Soil samples were collected from two different depths (up to 15 cm, 16-30 cm). Soil water samples were extracted from a depth of 40 cm and grass mass samples were collected from an area of 1 x 1 m. The areas according to exploitation intensity were as follows: EA1 a meadow mowed twice a year, EA2 a meadow mowed once a year, EA3a meadow was not mowed for 5 years. Iodine in soil and grass mass was determined by a spectrometric method (the Sandell-Kolthoff reaction). Iodine in water was measured by the ICP-MS method. The average iodine content in the Jeseniky PLA was 0.91 +/- 0.18 mg kg(-1) in soil, 1.16 +/- 0.79 mu g dm-3 in soil water and 0.16 +/- 0.07 mg kg(-1) of 100% DM of grass and in the Sumava PLA was 4.69 +/- 0.70 mg kg(-1) in soil, 3.12 +/- 0.91 mu g dm(-3) in soil water and 0.31 +/- 0.13 mg kg(-1) of 100% DM of grass. A significantly (p<0.01) higher iodine content in soil (5.14 +/- 0.55 mg kg(-1)) was recorded in the most exploited EA1 area. The iodine content in soil water was significantly higher (p<0.05) in the EA2 area. The iodine content in grass mass was not affected by the exploitation of grassland. Significant differences in the iodine content extracted from the two soil depths mentioned above were not observed. The results demonstrated a low iodine content in both PLAs in the Czech Republic (especially in the PLA Jeseniky) and demonstrate complex relationships among individual components of the soil ecosystem affecting iodine bioavailability. The findings also indicated that exploitation may be another factor that can influence the iodine content in soil.
Trvalý link: https://hdl.handle.net/11104/0332711