Spectroscopic and physico-chemical evaluation of lentic ecosystems from Bucharest City

摘要

Bucharest is one of largest cities in Romania and disposes of natural and artificial lakes, arranged for different leisure activities and some of them even for bathing. Monitoring and maintaining the quality of lentic ecosystems is important from both an economical and environmental point of view. Several lake water samples were collected from Bucharest area and characterized, for the first time by both physico-chemical parameters and spectroscopic methods. The standard quality indicators used are ascribed to general indicators (conductivity and pH), oxygen indicators (dissolved oxygen, chemical oxygen demand -COD) and nutrients (nitrates). The spectroscopic methods applied for the study of water quality were UV-Vis absorption and fluorescence spectroscopy. Various fluorescence indices were calculated as ratio between regions of the fluorescence maps. A good correlation was found between these indices and the standard parameters, thus suggesting that fluorescence spectroscopy might be a potential tool in the monitoring of the lake water quality.