Título: | OPTIMIZATION OF QUECHERS METHOD IN MUSSEL FOR THE DETERMINATION OF POLYCYCLIC AROMATIC HYDROCARBONS (PAHS) | ||||||||||||
Autor: |
HIGOR FRANCA MINGUITA |
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Colaborador(es): |
RENATO DA SILVA CARREIRA - Orientador |
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Catalogação: | 05/OUT/2021 | Língua(s): | PORTUGUESE - BRAZIL |
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Tipo: | TEXT | Subtipo: | THESIS | ||||||||||
Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=55215&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=55215&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.55215 | ||||||||||||
Resumo: | |||||||||||||
Polycyclic aromatic hydrocarbons (PAHs) of anthropogenic origin represent a class of contaminants of environmental relevance because they are derived from multiple petrogenic and/or pyrolytic sources and because they have toxic and carcinogenic effects. When found in commercially relevant fish, they can pose an additional risk to human health. The analysis of HPAs in biota is an analytical challenge, due to the complexity of the matrix and the low levels of concentration that pose a risk to fish consumption. This work aims to optimize and validate the QuEChERS method for analysis of PAHs in biological tissues as an alternative to conventional. The QuEChERS method presenting important characteristics for Green Chemistry, that is, reducing the excessive consumption of solvents, reagents, sample quantity, time, among other factors that reduce the environmental impact. The parameters that affect the efficiency of the method were studied and it was concluded that the purification step consisting of Z-sep+ with a thin column of silica and alumina presented better conditions for extract purification. The determination of compounds by gas chromatography coupled with mass spectrometry (GC-MS) provided us with results with high resolution, selectivity and detectability. The linearity and sensitivity of the method presented values greater than 0.990 for all PAHs, in a concentration range from 1 ng mL-1 to 50 ng mL-1 in the final extract; limits of detection and quantification in the ranges of 0.377 to 7.45 ng g -1 and 1.13 to 22.36 ng g -1. The method s recovery percentages ranged from 70 to 130 percent. The validated procedure allows quantifying PAHs in marine biota quickly, at low cost, free from interferences in the instrumental analysis by GC-MS and at quantification levels that allow the quality of fish for human consumption to be assessed according to international standards.
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