Título: | DEVELOPMENT OF A METHOD FOR THE DETERMINATION OF TOXIC AND ESSENTIAL ELEMENTS IN CANINE FUR BY INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY | ||||||||||||
Autor: |
RAFAEL CHRISTIAN CHAVEZ ROCHA |
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Colaborador(es): |
TATIANA DILLENBURG SAINT PIERRE - Orientador RACHEL ANN HAUSER DAVIS - Coorientador |
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Catalogação: | 01/JUN/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=53064&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=53064&idi=2 |
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DOI: | https://doi.org/10.17771/PUCRio.acad.53064 | ||||||||||||
Resumo: | |||||||||||||
Human hair can be used to check the individual s health status. For this purpose, the essential and toxic elements are quantified in the inductively coupled plasma mass spectrometer (ICP-MS) and compared to a reference table to identify any possible mineral imbalance or intoxication. The dog can be a good bioindicator of environmental exposure since it shares the same environment as the human being, drink the same water and in some cases eat the same food. Canine fur has almost the same composition as human hair, varying only its growth. In this work, a method was developed to determine the essential and toxic elements in canine by ICP-MS. For that, the hair washing procedures were optimized, the minimal sample mass to ensure homogeneity, and the decomposition procedure. It was found that the best conditions were: washing with water, sample mass between 150 and 300 mg, and decomposition with HNO3 and H2O2. The results were compared with those obtained by optical emission spectrometry with inductively coupled plasma (ICP OES), a well-established technique. The method proved to be versatile due to its multi-element analytical capacity, with adequate sensitivity and accuracy (the recovery values in relation to the certified values were between 80 and 120 per cent) for the reference sample. The work indicated the necessity for further studies to established reference values of the mineralogram for dogs, as well evaluated the difference between races.
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