The role of organic matter on metal toxicity and bio-availability.
A short review concerning the role of organic matter on metal toxicity and bio-availability in aqueous systems is carried out. The complexity of the issue derives both from the high number of natural and anthropogenic organic compounds and from the variability of their structures. In fact, the binding capacity and affinity is dependent on the number and type of ligands, on their position in the structures, on the ligand/metal ratio. It is also necessary to develop analytical protocol in order to carry out speciation studies of organic carbon and of metals bound to organic compounds, and at the same time to characterise the nature of the complexes.
Calace
Nicoletta
N
Department of Chemistry, University of Rome La Sapienza, Piazzale A. Moro 5, 00185 Rome, Italy.
Petronio
Bianca Maria
BM
D000818:Animals; D001578:Benzopyrans / Q000737:chemistry / Q000493:pharmacokinetics; D001682:Biological Availability; D000460:Chlorophyta / Q000378:metabolism; D005618:Fresh Water / Q000737:chemistry*; D006812:Humic Substances; D019216:Metals, Heavy / Q000493:pharmacokinetics* / Q000633:toxicity; D017686:Oncorhynchus mykiss / Q000378:metabolism; D009930:Organic Chemicals / Q000493:pharmacokinetics*; D012623:Seawater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000493:pharmacokinetics* / Q000633:toxicity
D001578:Benzopyrans; D006812:Humic Substances; D019216:Metals, Heavy; D009930:Organic Chemicals; D014874:Water Pollutants, Chemical; C005023:fulvic acid