S. The objective of this study is always to estimate the seasonal
S. The objective of this study is to estimate the seasonal variation of heavy metals within the surface waters of Murmansk, the largest city north on the Arctic Circle, along with the environmental state of lakes determined by the chemical information. 2. Supplies and Techniques The short article presents the outcomes on the field studies of Murmansk in 2019020. The investigation covered seven lakes within the city of Murmansk (Semenovskoe, Ledovoe, Severnoe,Water 2021, 13, x FOR PEER REVIEW3 ofWater 2021, 13,three of2. Materials and Procedures The report presents the outcomes from the field research of Murmansk in 2019020. The research covered seven lakes inTreugolnoe) subject to(Semenovskoe, Ledovoe, Severnoe, Okunevoe, Srednee, Yuzhnoe, the city of Murmansk several PHA-543613 Autophagy levels of anthropogenic load Okunevoe, Srednee, Yuzhnoe, Treugolnoe) from the key sources of pollution (heatingsubject to variousterminal, anthropogenic load plants, the coal levels in the waste incineration in the main sources of pollution (heating plants, the coal terminal, the waste incineraplant, and so forth.). It can be noteworthy that 3 chosen lakes are usually not officially named and two tion plant, and so on.). It can be noteworthy that three selected lakes aren’t officially named and two of them had been named in accordance with their geographical place: (Severnoe (Northern) and of them were named based on their geographical location: (Severnoe (Northern) and Yuzhnoe (Southern)), Lake Treugolnoe (Triangular) was named by the authors as a result of Yuzhnoe (Southern)), Lake Treugolnoe (Triangular) was named by the authors due to its shape (Figure 1). its shape (Figure 1).Figure 1. Schematic map of the location of investigation objects. Figure 1. Schematic map from the place of study objects.The largest lakes are Srednee and Semenovskoe, the deepest ones also Srednee The biggest lakes are Srednee and Semenovskoe, the deepest ones areare also Srednee and Ledovoe with maximum depths 23.5 and 15.7 m respectively (Table 1). According to Ledovoe with maximum depths 23.5 and 15.7 m respectively (Table 1). According and the classification of of Alekin the the waters studied lakes mostly belong belong to for the classificationAlekin [18],[18],waters in thein the studied lakes mainlyto the chlo- the ride class, Na group, owing to to influence of of marine aerosols from Kola [19]. The chloride class, Na group, owingthe the influencemarine aerosols from Kola BayBay [19]. The exceptions are Lake Okunevoe and Lake Srednee their water is is Hydroxyflutamide Antagonist standard the majority exceptions are Lake Okunevoe and Lake Srednee asas their water common forfor the majority of lakes in Murmansk area, characterized by the distribution patterns of major ions in of lakes in Murmansk area, characterized by the distribution patterns of main ions in the the bicarbonate (HCO3 class, Ca group. These lakes are characterized by low mineralizabicarbonate (HCO3 ) class, Ca group. These lakes are characterized by low mineralization tion (imply 6343 mg/L), the highest rates of mineralization are observed in Lake Yu(imply 6343 mg/L), the highest prices of mineralization are observed in Lake Yuzhnoe zhnoe and Lake Ledovoe (294 and 612 mg/L, respectively) [20]. and Lake Ledovoe (294 and 612 mg/L, respectively) [20]. Water samples from the surface (1 m in the surface) water plus the bottom (1 m from the bottom) water of your lakes have been taken with a 2 L plastic bathometer. In the bathometer, the samples were poured into 1 L plastic bottles from Nalgene, the material of which will not have sorb.