Objectives: The purpose of this paper has been to determine quantitatively the presence of some heavy metals (Fe, Cu and Zn) which are of particular importance for the wine quality and human health. A total of 41 samples have been analyzed during different stages of winemaking. Methods: The determination of heavy metals is done by analytical technique known as Flame Atomic Absorption Spectroscopy (FAAS). The limit set by the EU directive EC 606/2009 and International Office of Vine and Wine (OIV) has been taken as reference values. Results and Discussion: None of the analyzed samples has exceeded the limits set by the EU and OIV, excluding the type of white wine known as Rhine Riesling. In this sample the Cu concentration exceeds several times the permissible values. Findings: It has been observed that heavy metals immediately after the alcoholic fermentation process probably continue to remain even for a while in the upper part until wine sediment forms at the bottom of the tank. A higher concentration of heavy metals was observed in the samples taken from the bottom of the wine tank. Conclusion: The analyzed wines samples do not pose a risk in the future to human health. Doi: 10.28991/esj-2020-01240 Full Text: PDF

Problem statement: Defining the control parameters of land, before that it be used to plant a culture is an important for the economic development of that region. Aproch: This paper treats the economical development for the quality of the land. Object of this study is determination of control parameters in land of Struga Region like Humus, pH-value, CaCO3, K2O, P2O5, total Azot.. Results: The results that were achieved in this study showed the significant difference in the quality of land. Indication for this are the smoll value of K2O which results goes from 4.81 mg/100g land to 15.22mg/100g land. Conclusion/Recommendations: For sowing potato culture or sun flower is necessary to preliminarily treated with organic fertilizers.

Macrophytes are important elements of aquatic ecosystems that grow in or near water. Their taxonomic composition, species diversity, depth, and density are indicators of environmental health; as such, Macrophytes are used to assess the ecological status of water bodies. Under the aim of assessing the ecological status of the Klina River in Kosovo, a survey was conducted at eight sampling sites along the river course to analyze macrophyte composition, diversity, density, and cover. Three samples were collected at each sampling site from early June to late September. The following macrophyte indices were used to assess the ecological status of the river: Macrophyte Index for Rivers (MIR), River Macrophyte Nutrient Index (RMNI), and River Macrophyte Hydraulic Index (RMHI). Our sampling area included the upper reaches of the river where no organic pollution was detected (oligotrophic), the middle reaches where polluted water from farms is discharged into the river, and the lower reaches characterized by heavy organic pollution from settlements and various industrial activities. There is a positive correlation (p < 0.05) between water temperature, turbidity, electrical conductivity (EC), total dissolved solids (TDS), orthophosphates (PO43−), ammonia (NH4+), nitrites (NO2−), calcium (Ca2+), and potassium (K+) with plant density, RMNI, RMHI, EQR-RMNI, EQR-RMHI, and MIR. Sodium (Na+) has stronger positive correlation (p < 0.01) with RMNI and RMHI indices and negative correlation with EQR-RMNI and EQR-RMHI. Our results show that ecological status along the river varies from high and good upstream to poor, bad, and moderate running downstream.

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Potatoes in Kosovo are cultivated in about 10,000 ha with a low average production of 10-12 t /ha and represent one of the main agricultural crops, both for agro-economic, physiological and productive importance, as well as in feeding the population. The purpose of the study was to research the level of potato cultivation in Kosovo and to determine some toxic elements of potato cultivated in some localities of Kosovo and comparing this level with the standards allowed by the World Health Organization regulation ,also comparing it with the standards allowed by Codex Stan 193-1995, for fruits and vegetables. Based on the results obtained for elements Zn, Cu, Pb and Cd , there was an increase of heavy metal concentrations in potato compared to the level allowed by the World Health Organization (WHO).