This study deals with an efficiency of a low dose of citric acid soil application on phytoextraction of uranium. Willow (Salix
spp.) and sunflower (Helianthus annus L.) were tested in this experiment with contaminated soil. The enhancing of uranium bioaccumulation was confirmed, but in
contrast to previous studies, the highest quantity of uranium was accumulated in leaves. After 5 weeks of citric acid treatment,
willow was more efficient in the uptake and translocation of uranium than sunflower. The transfer coefficient calculated for
leaves increased from 0.033 (control) to 0.74, or 0.56 after five doses of 5 mmol of citric acid per 1 kg of soil for willow
or sunflower, respectively. The uptake characterized by the total U content achieved 88 and 108 mg kg−1 in relation to the above ground parts of sunflower and willow, respectively. Even though both plants accumulated U in their
above ground parts in significant rate, they employed diverse ways to achieve it. At the end of the treatment, the physiological
condition of the plants enabled us to continue this method.
Although domestic cats are one of the most popular companion animals, current knowledge on the fate of micronutrients in cats according to their age, sex, and health is very limited. In this study, 72 whole blood and 54 plasma samples from cats of different ages and sex were collected at three veterinary offices in the Czech Republic, and the copper (Cu), selenium (Se), and zinc (Zn) concentrations were determined using inductively coupled plasma mass spectrometry (ICP-MS). The results showed that Cu was significantly (P < 0.05) higher in both plasma and whole blood of males (980 and 958 μg L−1 in plasma and whole blood, respectively) than in females (741 and 766 μg L−1 in plasma and whole blood, respectively), whereas no significant differences between males and females were found for Se and Zn. Similarly, no significant differences were recorded for any of the three elements according to age, although animals older than 7 years tended to have lower plasma concentrations of all three elements. Hypertrophic cardiomyopathy (HCM) is one of the most prevalent diseases of domestic cats. The potential relationship between the essential microelement status in the blood of cats with HCM vs. cats with no clinical signs of HCM was taken into account, but the limited number of HCM-positive individuals did not allow any clear conclusion. Thus, the potential relationships between micronutrient status in cats and the incidence of HCM should be elucidated in further research.