Avaliação do comportamento de uma rede de monitoramento de flúor utilizando planta azevém e placas alcalinas

Abstract

This work presents a study on a network of environmental monitoring of the element fluorine in the municipality of Araxá, MG. We used two methods: through active biomonitoring Lollium multiflorum cv: Lema and alkaline plates, a physical-chemical monitoring. The network is monitored 21 points, each point with three pots with three plants and alkaline plates. Every 14 days of exposure, consecutively and continuously, were collected plants and alkaline plates to obtain the results. The results of alkaline plates but also of plants were arbitrarily classified: very low, low, medium, high and very high. For the subsequent data processing was done for the two statistical methods used. Both methods have tracking statistical comparisons taking into account the whole network on the classification used, and then all points of the network against the other. This last application statistics led us to find the equality of responses: 49 in biomonitoring and 79 in plate alkaline. Although more detailed evaluations in the monitoring network was ranked side in their positions: NW, NE, SW, SE, and avoiding injury recomparada comparisons between the different classifications of points in different positions. Therefore, 5 points were able to be subtracted from the network without prejudice to the monitoring application: Currency (DIV), Eucalyptus 7 (EP7), Dam B5 (BB5), the Massif B2 (MB2), reducing the network by 5 points. The database assembled with weather information and production was able to explain the results of the behavior of F in plant tissue (mg/kg): CB4 (R2 = 0.87), CEA (R2 = 0.60), BRS (R2 = 0.80), PRE (R2 = 0.84). The biomonitoring system shows, as the main environmental variables can interfere in the presence of F in the atmosphere: air humidity, rainfall and wind.