Maximum entropy estimation of a Benzene contaminated plume using ecotoxicological assays.
Ecotoxicological bioassays, e.g. based on Danio rerio teratogenicity (DarT) or the acute luminescence inhibition with Vibrio fischeri, could potentially lead to significant benefits for detecting on site contaminations on qualitative or semi-quantitative bases. The aim was to use the observed effects of two ecotoxicological assays for estimating the extent of a Benzene groundwater contamination plume. We used a Maximum Entropy (MaxEnt) method to rebuild a bivariate probability table that links the observed toxicity from the bioassays with Benzene concentrations. Compared with direct mapping of the contamination plume as obtained from groundwater samples, the MaxEnt concentration map exhibits on average slightly higher concentrations though the global pattern is close to it. This suggest MaxEnt is a valuable method to build a relationship between quantitative data, e.g. contaminant concentrations, and more qualitative or indirect measurements, in a spatial mapping framework, which is especially useful when clear quantitative relation is not at hand.
Université catholique de Louvain, Earth and Life Institute, Environmental Sciences, 1348 Louvain-la-Neuve, Belgium.
Agung
A
Wahyudi
Mariana
M
Bartzke
Eberhard
E
Küster
Patrick
P
Bogaert
D048908:Aliivibrio fischeri; D001554:Benzene / Q000032:analysis* / Q000633:toxicity; D001681:Biological Assay; D054750:Ecotoxicology; D019277:Entropy; D004784:Environmental Monitoring / Q000379:methods; D060587:Groundwater / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000633:toxicity
D014874:Water Pollutants, Chemical; D001554:Benzene