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An algal biosensor for the monitoring of water toxicity in estuarine environments.
- Source :
-
Water research [Water Res] 2001 Jan; Vol. 35 (1), pp. 69-76. - Publication Year :
- 2001
-
Abstract
- An algal biosensor for toxicity assessment of estuarine waters is proposed. The sensor was obtained by coupling a suited algal bioreceptor (the cyanobacterium Spirulina subsalsa) to an amperometric gas diffusion electrode. The analytical device allows the monitoring of the evolution of photosynthetic O2 and the detection of alterations due to toxic effects caused by environmental pollutants present in the medium. Four chemical species representative of three main different classes of pollutants (heavy metals, triazinic herbicides, carbamate insecticides) were tested at different concentrations using a standardized natural water as experimental medium. In all the cases a toxic response was detected (i.e. a dose-related inhibition of photosynthetic activity was recorded) with good reproducibility.
- Subjects :
- Carbamates
Environmental Monitoring instrumentation
Equipment Design
Fresh Water
Herbicides analysis
Insecticides analysis
Metals, Heavy analysis
Oxygen analysis
Photosynthesis
Seawater
Spirulina
Triazines analysis
Bacterial Proteins physiology
Biosensing Techniques
Environmental Monitoring methods
Water Pollutants, Chemical analysis
Subjects
Details
- Language :
- English
- ISSN :
- 0043-1354
- Volume :
- 35
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Water research
- Publication Type :
- Academic Journal
- Accession number :
- 11257895
- Full Text :
- https://doi.org/10.1016/s0043-1354(00)00223-2