Nova estratégia para análise de contaminantes emergentes em águas residuais industriais por espectrometria de massas ambiente (PSI-MS)
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2018-02-28
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Universidade Federal de Goiás
Resumo
Water is an essential natural resource for life that is compromised by the release of emerging
contaminants, including synthetic hormones. These compounds can be released directly through
industrial effluents and indirectly through domestic sewage. Monitoring emergent contaminants
(ECs) in the aquatic environment has become a priority as they pose risks to human health and the
environment because of their ability to deregulate the endocrine system. Thus, verification
analyzes of the emerging contaminants produced by the pharmaceutical industries are required.
The most common analytical methods for analysis of this class of compounds involve the use of
liquid or gas chromatography coupled to tandem mass spectrometry (MS / MS) with procedures for
the preparation of long samples and long chromatographic runs. In this study, a methodology was
developed for the analysis of emerging contaminants in raw and treated industrial wastewater from
a local industry's hormone production line by an environmental ionization technique known as
Paper Spray Ionization (PSI). Here, we have proposed an analytical approach based on the use of
waxed papers. Analyzes of the synthetic hormones levonorgestrel and algestone acetophenide
occurred by adding the sample to a triangular paper that was moistened with methanol solution
(0.1% formic acid). The paper was fixed at the input of the mass spectrometer through a metal clip
which provided a voltage to the paper. The analytical curves presented a linear correlation
coefficient above 0.99. For the hormone levonorgestrel the intra-day and inter-day precision ranged
from 0.5 to 5.3%, accuracy ranged from -7.0 to 4.2% while recovery ranged from 82.2 to 101.3%.
For the hormone algestone acetophenide the intra-day and inter-day precision ranged from 0.9 to
10.7%, accuracy ranged from -7.7 to 8.9% while recovery ranged from 88.4 to 101.6%. The
levonorgestrel hormone was also analyzed with the classic LC-MS method, showing consistent
results between the two approaches, thus confirming the reliability of the proposed method.
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RODRIGUES, Marcella Ferreira. Nova estratégia para análise de contaminantes emergentes em águas residuais industriais por espectrometria de massas ambiente (PSI-MS). 2018. 75 f. Dissertação (Mestrado em Química) - Universidade Federal de Goiás, Goiânia, 2018.