Atrazine bioconcentration and uptake were determined for eight freshwater green algae and diatoms. Atrazine uptake was extremely rapid in all species examined, with nearly 90% of total uptake occurring within the first hour of exposure. Within each division, different species had different bioconcentration capacities, although the accumulation of atrazine was consistently higher in green algae ...

A research project dealing with the phytoremediation of a soil polluted by some heavy metals is currently running. The case study is represented by a mining area in Hamedan province in the central west part of Iran. The potential of phytoextraction and phytostabilization of plants was evaluated considering the concentration of heavy metals in the plant tissues and also the bioconcentration fact...

plant-based remediation (i.e. phytoremediation) is one of the most significant eco-sustainable techniques to cope with devastating consequences of pollutants. in the present study, the potential of a wetland macrophyt (i.e. potamogeton crispus ) for the phytoremediation of heavy metals (i.e. cu, cr, pb, as and cd) in the anzali wetland was evaluated. the results showed that p. crispus tends to ...

2.1.Date of QMRF: 06.11.2009 2.2.QMRF author(s) and contact details: [1]Dana Martin Molcode Ltd. Turu 2, Tartu, 51014, Estonia [email protected] http://www.molcode.com [2]Indrek Tulp Molcode model development team Molcode Ltd. Turu 2, Tartu, 51014, Estonia [email protected] http://www.molcode.com [3]Tarmo Tamm Molcode model development team Molcode Ltd. Turu 2, Tartu, 51014, Estonia models@mo...

Pesticide contamination of river and lake waters from agriculture use is a problem of worldwide importance. Many field data on the pesticide contamination of surface waters and aquatic organisms in rivers and lakes (Amaraneri & Pillala, 2001, Abdel-Halim et al., 2006; Agradi et al., 2000; California Environmental Protection Agency, 2002; California Regional Water Quality Control Board, 2002; Ca...

Background: Artemia urmiana are small crustaceans that because of its non-selective filter feeder pattern potentially may absorb high level of heavy metals through their living environment. In this study, the effects of different levels of cadmium and copper on survival, catalase activity and metals bioconcentration rates in A. urmiana nauplii have been investigated. Methods: The research wa...

Worldwide programmes for the regulation of chemicals require an assessment of the risks of chemicals to human and environmental health based on three categories of concern: Persistence, Bioaccumulation and Toxicity (PBT). Among these three categories, bioaccumulation refers to the enrichment of environmental chemicals in organisms. It encompasses the absorption, distribution, metabolism and exc...

• No acute toxicity of silica-zirconia core–shell NP was found for D. magna and rerio . Retention Zr from the form ZrO 2 in both species. The same concentration molecular (ZrOCl ) did not result elevation fish tissue. environmental risk is higher than form. Trace element homeostasis, growth survival were affected by SiO @ZrO exposition. Model experiments under laboratory conditions carried out ...

The uptake of the triazine herbicides, atrazine and terbutryn, was determined for two freshwater photosynthetic microorganisms, the green microalga Chlorella vulgaris and the cyanobacterium Synechococcus elongatus. An extremely rapid uptake of both pesticides was recorded, although uptake rate was lower for the cyanobacterium, mainly for atrazine. Other parameters related to the herbicide bioco...

Lanthanide emissions to the environment increase as a result of the growing industrial applications of these elements. However, robust data to evaluate the environmental fate of lanthanides are scarce. This article describes the accumulation and elimination of lanthanum (La) by common duckweed (Lemna minor L.). Speciation modeling was performed to assure that solubility products were not exceed...