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Análise de hidrocarbonetos policíclicos aromáticos – HPAs – em sedimentos do ribeirão do Funil na região de Ouro Preto – MG.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Souza, Wesley Robert De |
| Copyright Year | 2007 |
| Abstract | The waters from rivers, streams and lakes from Ouro Preto region had been studied by various researches. The hydric system of this region is subjected to contamination from mining activities, industries and other anthropic sources. In spite of this, Ouro Preto thus not have a proper water treatment plant. In this work, were determined and quantified eleven Polycyclic Aromatic Hydrocarbons (PAHs) in sediment samples and were evaluated the physico-chemical proprieties of aqueous samples from the Ribeirao do Funil. The sampling points were defined in four places along the stream. Two of them, were located upstream to the aluminum smelting plant and two downstream to it. Those last two points are also located after the urban center of Ouro Preto. The samples werecollect in three different sampling campaigns. The sediment samples were subjected to soxhlet extraction and the extracted produced was concentrated using Kuderna_Danish (US-EPA METHOD 3540C). The extracts were clean-uped trough an activated silica gel column in accordance to the USEPA METHOD 3630 C. The samples were analyzed by High Performance Liquid Chromatography (HPLC), using a C-18 reverse phase column and detected by fluorescence emission spectrometry. For the aqueous samples were evaluated their quality trough the physico-chemical parameters and metal contents. For the quantified 11 PAHs, the highest concentration for the three campaigns were found for the benzo(b)fluoranthene. In some samples was found benzo(a)pyrene, knew for the high carcinogenic power. The sampling point just below the aluminum smelting plant presented the highest total PAHs content, indicating the possible source of contamination, since these kind of industries rely on fossil fuels in their process. The physico-chemical analyses showed the pour quality for the aqueous samples which presented high content of toxic metals such as arsenic and lead. The evaluation of PAHs contents into sediments of this region is unknown, and the results obtained should be considered for its importance, since these compounds are well know for their high carcinogenesis. The presence of benzo(a)pyrene in some samples indicate the risk for the human health exposed to this environment. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.repositorio.ufop.br/bitstream/123456789/3081/1/DISSERTA%C3%87%C3%83O_An%C3%A1liseHidrocarbonetosPolic%C3%ADclicos.PDF |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
