Biogeochemical mechanisms controlling trophic state and micropollutant concentrations in a tropical artificial lake

Costa, Normara Yane Mar da; Boaventura, Géraldo Resende; Mulholland, Daniel Santos; Araújo, Daniel F.; Moreira, Ricardo Cosme Arraes; Faial, K.C.F.; Bomfim, Eudes de Oliveira

doi:10.1007/s12665-016-5629-y

Cited by 19 publications

(21 citation statements)

References 77 publications

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“…Similar results were observed by da Costa et al 8 investigating the levels of caffeine, bezafibrate and bisphenol A in samples from the same lake collected in a depth of 10 m. However, higher concentrations were reported by the authors at the Bananal Branch at a depth of 1 m. This behavior shows that water mixture in lakes has an important impact on contaminant transport. For diethyl phthalate, all results from da Costa et al 8 showed higher levels at the Bananal Branch while nonylphenol was more abundant at the Riacho Fundo Branch. Our results show that in this portion of the lake, caffeine concentration was higher in the sampling point immediately after the WWTP (PL3) and diminished at the subsequent sampling point (PL4) indicating a possible dilution and/or degradation.…”

Section: Resultssupporting

confidence: 88%

“…[7][8][9][10] However, our data support that WWTP may be an important source of emerging contaminants if diffuse inputs and water circulation are considered. The latter aspect was also investigated by Goldscheider et al 32 in Geneva Lake (Switzerland) where contaminant transport does not occur by homogeneous mixing processes, but in the form of plumes with sharp boundaries, being not possible to draw an iso-concentration line between the measured concentrations.…”

Section: Resultsmentioning

confidence: 75%

“…The concentration of emerging contaminants in Paranoá Lake was previously reported by da Costa et al 8 The authors investigated the occurrence of caffeine, bezafibrate (pharmaceuticals), bisphenol A, diethyl phthalate and nonylphenol (industrial/domestic use) in five points along the lake and showed that the first substance was the most abundant chemical with concentrations ranging from 68 to 212 ng L -1 . Also, higher levels were observed in the branches affected by discharges of the two WWTPs.…”

Section: Introductionmentioning

confidence: 79%

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Seasonal and Spatial Distribution of Caffeine, Atrazine, Atenolol and DEET in Surface and Drinking Waters from the Brazilian Federal District

Sodré¹,

Santana²,

Sampaio³

et al. 2018

J. Braz. Chem. Soc.

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Selected emerging contaminants in water samples from the Brazilian capital were investigated by liquid chromatography-mass spectrometry after solid-phase extraction. In Paranoá Lake, an urban reservoir that will be used to produce drinking water, caffeine was the most abundant contaminant found (average of 53 ng L ). The role of wastewaters discharges could not be evidenced probably due to the water flow and circulation in the lake. However, higher concentrations were detected during the dry season suggesting the presence of point sources, except for atrazine. In source waters, concentrations were lower in comparison with Paranoá Lake waters. Environmental risk assessment shows the need for further surveys for atrazine. For drinking waters, only caffeine and atrazine were detected at average concentrations of 8.6 and 3.2 ng L -1 , respectively. No risk for human health was observed.

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Section: Resultssupporting

confidence: 88%

Section: Resultsmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 79%

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Seasonal and Spatial Distribution of Caffeine, Atrazine, Atenolol and DEET in Surface and Drinking Waters from the Brazilian Federal District

Sodré¹,

Santana²,

Sampaio³

et al. 2018

J. Braz. Chem. Soc.

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“…Lake Paranoá also receives effluents from two wastewater treatment plants (WWTP North and WWTP South). According to Mar da Costa et al [25], the treatment plants operate using similar processes, activated sludge with nitrogen and phosphorus biological removal, followed by an additional flotation The average annual air temperature for the study period was 21.9 °C, with little variation over the year. The monthly rainfall was below the historical average in most of the months studied.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Phosphorus Budget for a Deep Tropical Reservoir of the Brazilian Savannah

Barbosa

Bellotto

Silva

et al. 2019

Water

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This research investigated the source and fate of different chemical species of N and P on a deep tropical urban reservoir, the artificial Lake Paranoá, located in the city of Brasilia (Brazil). To determine an N and P budget, nutrient input from the external load (four main tributaries and two wastewater treatment plants), internal load (from sediment) and nutrient output (from a downstream dam) were estimated empirically. Nutrient storage was evaluated in two compartments: water column and sediment. Nutrient input from the tributaries varied by season presenting higher loads in the wet season, especially N. Nutrient budgets in our study indicated that Lake Paranoá retained dissolved inorganic nitrogen (DIN), PO43−-P, total organic phosphorus (TOP) and exported total organic nitrogen (TON), both on a seasonal and annual scale. Surface sediment is the major storage compartment for both N and P. These results show the pressing need for action to reduce the P outcome charges, mainly, from the wastewater treatment plants. The data here presented contributes to the recognition of this situation and to a better comprehension of these nutrient dynamics, as well as an understanding of the behavior of tropical deep-water reservoirs. This can help to promote more effective management, providing a reference for other similar systems.

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“…The authors also show that only caffeine and iopromide present concentrations higher than 100 ng/L in the site of the future raw water withdrawal. Da Costa et al [ 16 ] investigated the occurrence of emergent contaminants at five sampling points along Paranoá Lake, including the point at the lake dam, where they observed lower concentrations of caffeine, bezafibrate, bisphenol A, diethyl phthalate, and nonylphenol compared to the other points located in the four branches of the lake.…”

Section: Introductionmentioning

confidence: 99%

Method Development for Assessing Carbamazepine, Caffeine, and Atrazine in Water Sources from the Brazilian Federal District Using UPLC-QTOF/MS

Sodré

Cavalcanti²

2018

International Journal of Analytical Chemistry

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About 3.0 million people living under a typical tropical savannah climate in the Brazilian Federal District (FD) have faced an unprecedented water crisis. Considering the need for indirect reuse of wastewater for public supply, this work aimed to investigate FD water sources regarding the presence and risks of three contaminants of emerging concern: caffeine, carbamazepine, and atrazine. Samples from two current water sources (Descoberto and Santa-Maria Lakes) and two future water sources of the FD (Paranoá and Corumbá Lakes) were analyzed by solid-phase extraction followed by liquid chromatography coupled to hybrid quadrupole-time-of-flight mass spectrometry (UPLC-QTOF/MS). Method precision and accuracy were satisfactory and limits of quantification ranged from 0.37 to 0.54 ng/L. Higher concentrations were observed for caffeine in the future water sources (39 to 180 ng/L) followed by carbamazepine (5.4 to 25 ng/L) and atrazine (3.9 to 15 ng/L). The less-impacted water sources, in current use in the FD, present caffeine concentrations ranging from 4.8 to 32 ng/L and atrazine levels varying between 2.4 and 5.5 ng/L. Carbamazepine was not detected in these reservoirs. Environmental risk assessment indicates a possible risk for carbamazepine and atrazine, evidencing the need for further studies. No human health risk was depicted within the results.

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Biogeochemical mechanisms controlling trophic state and micropollutant concentrations in a tropical artificial lake

Cited by 19 publications

References 77 publications

Seasonal and Spatial Distribution of Caffeine, Atrazine, Atenolol and DEET in Surface and Drinking Waters from the Brazilian Federal District

Seasonal and Spatial Distribution of Caffeine, Atrazine, Atenolol and DEET in Surface and Drinking Waters from the Brazilian Federal District

Nitrogen and Phosphorus Budget for a Deep Tropical Reservoir of the Brazilian Savannah

Method Development for Assessing Carbamazepine, Caffeine, and Atrazine in Water Sources from the Brazilian Federal District Using UPLC-QTOF/MS

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