The lead (Pb) is a heavy metal, which causes severe disorders in humans and other organisms. Recently, the item of wetland buffer zone has emerged as an integrated development approach to nature conservation including buffer zone pollution by Pb. The main sources of Pb pollution in Lithuania are Pb ammunition used by hunters and natural and anthropogenic activities. Considering plant capability to accumulate Pb, they are used for bioindication. The objective of the study was to determine Pb content in the aboveground biomass of vegetation collected from the reference sites in the buffer zones of wetlands. The research was conducted in three localities of the different wetland buffer zones -drying ditch, natural pond, and stream, in the three parts of Lithuania: in the Northwestern part of Lithuania in the territory of the Žemaitija National Park, in the northern part of the Žemaitija Upland at the border of Latvia, and in the Central Lithuania, in the vicinity of the largest artificial waterbody -Kauno Marios and the Nemunas River. The content of Pb in the working solutions was determined by the atomic absorption method on an atomic absorption spectrometer at a wavelength of 283.0 nm. Significant differences were calculated using the three-way ANOVA (Tukey's HSD test). The relationships were calculated using a regression analysis, the data were significant at P ≤ 0.01 and P ≤ 0.001. The data of the research show that the content of Pb corresponds to the background content of uncontaminated sites, the values of which are reported by other scientists and is equal to 0.95-6.84 mg kg −1 . The average content of Pb in the buffer zones of various surface water source types was 3.75-3.76 mg kg −1 . The content of Pb in the plants at 20-30 m from the surface water bodies increased by 1.3-1.5 times, and then at 40 m it decreased by the same indicator.
Technology organic and inorganic substances 45 to develop their synthesis, to investigate their properties, and to devise an industrial, high-efficient, easy to operate, environmentally friendly technology of their production, which is of significant interest, both scientifically and practically. 2. Literature review and problem statement Among all surface-active substances, the anion SAS enjoyed the greatest demand on the world market in 2019, due to their low price [2]. Synthetic multifunctional anion-active SASs have been the leaders in terms of their application in many sectors of national economies. These are the unique surfactants because they represent water-soluble polymers with several functional groups [3]. In the industry, they are used in the production of finishing forms of dyes and pigments [4-6], when coloring fabrics, paper, leather. They are the plasticizers of concrete mixtures [7] used in residential, industrial construction, and the construction of highways [8]. The most well-known multifunctional SASs, which are used as dispersant and stabilizers, are the products of
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.