Bioaccumulation capacities of copper(II) ions in Salvinia natans

Abstract

Capacities of the pleustophytes in the purification of the aquatic environments in Polish climatic zone have been evaluated. Studies of bioaccumulation of copper(II) from culture media contaminated with 5, 10, 15 and 20 mg Cu/dm 3 by the plants of Salvinia natans species were performed. The process was carried out for 14 days with the use of artificial plant-breeding species. The balance of the content of copper(II) in dry matter of plants and in the culture media was investigated. Capabilities of Salvinia natans to bioaccumulate copper(II) have been confirmed in all contaminated culture media.

Assessment of the physiological condition of Salvinia natans L. exposed to copper(II) ions

“…The dry matter increase in the control was 30% with respect to the initial matter (the 0 day). For 15 and 20 mg Cu/dm 3 , a decrease in dry matter reaching almost 9% was observed on the 14th day for the highest concentrations of copper in the medium [2]. Copper in concentrations used in the experiment do not stimulate the increase of the biomass more than it does it in the control.…”

“…The analysis of copper content in biomass indicated an increase of metal content in plants in all medium cultures contaminated with copper(II) ions. On the 14th day of the experiment 7-, 18-, 23-and 40-fold increase in the metal content was obtained in the biomass of Salvinia natans L. for 5, 10, 15 and 20 mg Cu/dm 3 in the medium culture with respect to the control [2].…”

“…The plants' condition significantly influences the performance of the purification of water environment and the efficiency of the phytoremediation process. In the Odra valley there are sites occupied by the species of Salvinia natans which has confirmed the ability to bioaccumulate metal and non-metal ions from polluted waters [2][3][4][5][6][7][8][9][10][11][12]. Salvinia sp.…”

“…Salvinia sp. cumulate _________________________ 90% of copper ions from solutions of low concentrations (up to 1.0 mg Cu/dm 3 ), as well as from solutions containing much more copper [2][3][4][5][6].…”

Trace element accumulation in Salvinia natans from areas of various land use types

“…Many aquatic macrophytes have shown a high capability to accumulate trace elements from water or bottom sediments (Dhir et al 2009), but they differ in both the intensity of accumulation in their tissues and in biomass (Rezania et al 2016). Therefore, the suitability for bioindication and effectiveness of phytoremediation are strongly correlated with the selection of an appropriate plant species (Hołtra and Zamorska-Wojdyła 2014). An accumulative bioindicator should be easy to identify in the field, easy to collect and handle and abundant and should show correlation between the environmental concentration of the pollutant to be monitored and the concentration in the organism (Brooks and Robinson 1998; Markert et al 2003).…”