Occurrence and removal of drugs and endocrine disruptors in the Bolonha Water Treatment Plant in Belém/PA -Brazil-.
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2021
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This study aimed to investigate the occur-
rence of drugs and endocrine disrupters in water sup-
plies and in water for human consumption. Twelve
sampling campaigns were carried out during the
rainy and dry season at four sampling points in the
Bolonha Complex, in the city of Belém, northern
region of Brazil: Bolonha reservoir (catchment) and
Water Treatment Plant (WTP) Bolonha (fltered water
chamber, treated water tank, and washing water from
the flters). The determination of the compounds was
performed by solid phase extraction followed by gas
and liquid chromatography coupled to mass spec-
trometry. The results confrmed the anthropic infu-
ence that the reservoir and WTP-Bolonha have been
sufering, as consequence of the discharge of domes-
tic sewage in natura. Among 25 microcontaminants
analyzed, 12 were quantifed in raw water and 10 in treated water. The antiallergic Loratadine (LRT) was
the contaminant that occurred most frequently in all
sample points, having been poorly removed (median
12%) in the conventional treatment used. Losartana
(LST), 4-octylphenol (4-OP), and Bisphenol A (BPA)
also occurred very frequently in raw water with con-
centrations ranging from 3.7 to 194 ng L−1. Although
such contaminants occurred in treated water in con-
centrations varying from 4.0 to 135 ng L−1, the esti-
mated margin of exposure ranged from 55 to 3333
times which indicates low risk of human exposure to
such contaminants through ingestion of treated water.
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Microcontaminants, Risk analysis
Citação
TEIXEIRA, L. C. G. M. et al. Occurrence and removal of drugs and endocrine disruptors in the Bolonha Water Treatment Plant in Belém/PA -Brazil-. Environ Monit Assess, v. 193, artigo 246, 2021. Disponível em: <https://link.springer.com/article/10.1007/s10661-021-09025-x>. Acesso em: 11 out. 2022.