S. The objective of this study is always to (Z)-Semaxanib References estimate the seasonal
S. The objective of this study will be to estimate the seasonal Pinacidil Potassium Channel variation of heavy metals inside the surface waters of Murmansk, the biggest city north on the Arctic Circle, and the environmental state of lakes according to the chemical data. two. Supplies and Procedures The article presents the outcomes with the field research of Murmansk in 2019020. The research covered seven lakes within the city of Murmansk (Semenovskoe, Ledovoe, Severnoe,Water 2021, 13, x FOR PEER REVIEW3 ofWater 2021, 13,three of2. Supplies and Techniques The short article presents the results from the field research of Murmansk in 2019020. The study covered seven lakes inTreugolnoe) topic to(Semenovskoe, Ledovoe, Severnoe, Okunevoe, Srednee, Yuzhnoe, the city of Murmansk a variety of levels of anthropogenic load Okunevoe, Srednee, Yuzhnoe, Treugolnoe) in the main sources of pollution (heatingsubject to variousterminal, anthropogenic load plants, the coal levels on the waste incineration in the key sources of pollution (heating plants, the coal terminal, the waste incineraplant, etc.). It is actually noteworthy that three chosen lakes aren’t officially named and two tion plant, etc.). It is noteworthy that three chosen lakes are usually not officially named and two of them had been named according to their geographical location: (Severnoe (Northern) and of them have been named in line with their geographical location: (Severnoe (Northern) and Yuzhnoe (Southern)), Lake Treugolnoe (Triangular) was named by the authors because of Yuzhnoe (Southern)), Lake Treugolnoe (Triangular) was named by the authors as a result of its shape (Figure 1). its shape (Figure 1).Figure 1. Schematic map from the location of analysis objects. Figure 1. Schematic map from the place of research objects.The largest lakes are Srednee and Semenovskoe, the deepest ones also Srednee The largest 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). In line with Ledovoe with maximum depths 23.five and 15.7 m respectively (Table 1). According plus the classification of of Alekin the the waters studied lakes primarily 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 standard the majority exceptions are Lake Okunevoe and Lake Srednee asas their water typical forfor the majority of lakes in Murmansk region, characterized by the distribution patterns of main ions in of lakes in Murmansk area, characterized by the distribution patterns of principal ions inside 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 and the bottom (1 m from the bottom) water from the lakes have been taken with a two L plastic bathometer. In the bathometer, the samples were poured into 1 L plastic bottles from Nalgene, the material of which does not have sorb.
