Occurrence of Antimicrobials in River Water Samples from Rural Region of the State of Rio de Janeiro, Brazil

Abstract

The occurrence of antimicrobials in the aquatic environment and drinking water has raised the question of their impact on the environment and public health. Animal production is one of the most expressive activities of Brazilian agribusiness. In order to ensure the productivity and competitiveness of the sector, the use of drugs for therapeutic and prophylactic purposes is a common practice. Due to the continuous release of antimicrobials into the environment, the aim of this study was to compare the frequency of detection of tetracyclines and sulfonamides in surface water collected from rural areas in Lidice District of Rio Claro, in the State of Rio de Janeiro, Brazil. An investigative study was conducted with 24 river water samples analyzed by high-performance liquid chromatography coupled to tandem mass spectrometry and the aim of this study was to determine residues of sulfonamides and tetracyclines based on the USEPA me- M. A. Monteiro et al.231

Antibiotic resistance in surface waters from a coastal lagoon of Southern Brazil under the impact of anthropogenic activities

“…Levels of antimicrobial contamination have already been detected in water bodies of Brazil (Quadra et al, 2017), but bacterial resistance has been poorly studied in these environments (Nascimento and Araújo, 2014;da Costa Andrade et al, 2015;Monteiro et al, 2016;Oliveira et al, 2016). In this way, this study aims to evaluate the presence of antibiotic resistant bacteria (ARB) in surface waters of Tramandaí Lagoon and whether it varies according to the presence of different anthropic disturbances.…”

Water pollution: one of the main Limnology challenges in the Anthropocene

“…As a result, PPCPs may end up in aquatic ecosystems (Tambosi et al, 2010) and are seldom required by regular water quality guidelines. Once in the aquatic environment, PPCPs may cause ecotoxicological effects on the biota and reach humans through drinking water or food consumption (Monteiro et al, 2016). It is alarming the magnitude of concentrations, such as those derived from pain killers and hormones, which have been found in natural aquatic ecosystems.…”

Optimization of ciprofloxacin degradation in wastewater by homogeneous sono-Fenton process at high frequency

“…The use of thousands of tons of pharmaceuticals to treat human and animal illnesses, but also in farming and aquaculture has become a serious problem for environment and human health. [1][2][3][4] They could be toxic to aquatic life when released in the environment [5][6][7][8][9] , even at very low concentrations (parts-per-trillion to parts-per-billion) in aquatic systems. [10,11] Depending on the drugs, up to 95% of the administered dose can be excreted unchanged or as active metabolites and enter the environment altering rivers, lakes and groundwater.…”

“…[10,11] Depending on the drugs, up to 95% of the administered dose can be excreted unchanged or as active metabolites and enter the environment altering rivers, lakes and groundwater. [1][2][3][4]12] Most drugs are designed so that they keep their chemical structure long enough to exert their therapeutic effect. This property, combined with their continuous input into the ecosystem, may enable them to persist for an extended period of time.…”

“…4 and 5). deg = −6.032 + 0.021 F − 0.004 F * P + 2.612 P + 0.039 P * P R 2 = 99.73%(4) min = −3.249 + 0.007 F − 0.002 F * P + 1.949 * P + 0.017P * P R 2 = 99.49 %…”