RT Journal Article ID 20029e4c31700114 A1 Linnik, P.N. A1 Zhezherya, V. A. A1 Ignatenko, I. I. T1 Role of Suspended Matter Fractions Differing in the Size of Their Particles in the Accumulation and Migration of Metals in Lake Systems JF Hydrobiological Journal JO HYD YR 2019 FD 2019-12-05 VO 55 IS 6 SP 91 OP 107 K1 suspended matter K1 membranous filtration K1 particle size K1 metals K1 desorption K1 lakes AB Results of the study of the role of suspended matter and its individual fractions differing in the size of their particles in the processes of accumulation and migration of metals (Al, Fe, Mn, Cr, Cu, and Mo) in lake ecosystems (on the example of Lake Nizhniy Telbin and Lake Verbnoye, Kiev) are given in the paper. It has been shown that in both lakes Al, Fe, Mn, and Cr migrate mainly in the suspended state. The mass contribution of the suspended form of each of the above-mentioned metals was as follows: in the water of Lake Nizhniy Telbin -77.7-86.6, 82.4-96.6, 45.6-56.9, and 29.9-74%, whereas in the water of Lake Verbnoye - 43.8-68.4, 46.4-92.2, 30.5-70.4, and 0.7-93.4% of their total content in the water. At the same time, Cu and Mo were found mainly in the dissolved state: 66.6-74.9% Cutotal and 63.9-77.8% Mototal in the water of Lake Nizhniy Telbin and 81.9-84.4% Cutotal and 56.6-66.7% Mototal in the water of Lake Verbnoye. Data on the content of the studied metals in the composition of suspended matter fractions differing in the size of their particles (> 0.85 μm, > 0.40-0.85 μm, and > 0.23-0.40 μm) are also given in the paper. The contribution of metals in the composition of suspended matter fractions significantly increased with decreasing the size of the particles (in calculating in mg/g of suspended matter dry mass). A decrease in pH value to 4.0 resulted in the decrease in the contribution of the desorbed form of metals in the following order: Cr > Mn > Al > Fe, Cu regardless of the origin of suspended matter. PB Begell House LK https://www.dl.begellhouse.com/journals/38cb2223012b73f2,66be03021d9830d7,20029e4c31700114.html