Indices of the presence of atoms (IPA) encode the presence or absence of atoms, such as nitrogen, oxygen, sulphur, phosphorus, fluorine, chlorine, and bromine in a molecule. They are calculated with the simplified molecular input line entry system (SMILES). Using the Monte Carlo method for correlation weights of these indices, one can improve the predictive ability of optimal SMILES-based descr...

BACKGROUND Bioconcentration factor (BCF) describes the behaviour of a chemical in terms of its likelihood of concentrating in organisms in the environment. It is a fundamental property in recent regulations, such as the European Community Regulation on chemicals and their safe use or the Globally Harmonized System for classification, labelling and packaging. These new regulations consider the p...

There has been increasing concern in recent years regarding lead (Pb) transfer in the soil-plant system. In this study the transfer of Pb (exogenous salts) was investigated from a wide range of Chinese soils to corn grain (Zhengdan 958). Prediction models were developed with combination of the Pb bioconcentration factor (BCF) of Zhengdan 958, and soil pH, organic matter (OM) content, and cation...

Chromium (Cr) is ubiquitously present in the aquatic environment. From various natural and anthropogenic sources Cr (VI) reaches to the aquatic ecosystem through weathering and surface runoff. The nature of metals is conservative which leads to the buildup of metal concentration in aquatic system. Microscopic phytoplankton imbibes these metal ions as nutrient irrespective of their essentiality ...

This research investigated four different species of aquatic macrophytes with natural occurrence in an urban environment highly anthropized Southern Brazil. The aim the was to compare phytoremediation potential among E. anagallis, H. grumosa, ranunculoides, and S. montevidensis through Pearson´s correlation analysis cluster analysis, using heavy metal content identified HNO3 - HClO4 indexes. re...

metal pollution has become one of the most serious environmental problems resulting from human activity. phytoremediation utilizes plants to uptake contaminants and can potentially be used to remediate metal-contaminated sites. the present study investigates heavy metal uptake (cd, cr, and ni) from soil by different organs of populus alba and morus alba. for this purpose, cd (40, 80, and 160 m...

This study aims to determine the bioconcentration of heavy metal Lead Pb in seawater, sediment, and mangrove plants Avicennia marina factor which was conducted January 2022 Mangunharjo coastal area. The method used this research a survey with quantitative analysis. samples A. mangroves were divided into three categories stem diameter, namely small (3 – 8 cm), medium (6 15 large (11 23 cm). Meas...

Tissue metal accumulations (gills, liver, kidney and muscle) in Persian sturgeon (Acipenser persicus) were compared folowing exposure to sublethal levels of waterborne Cd (50, 400 and 1000 μg•L-1) after periods of 1, 2, 4 and 14 days. The obtained results indicate that at the end of 4 and 14 days of exposure, total tissue cadmium concentration followed the pattern: liver > gill > kidney > muscl...