Determination of background concentrations of hydrochemical parameters and water quality assessment in the Akhuryan River Basin (Armenia)

Arpine, Hovhannisyan; Shahnazaryan, Gayane

doi:10.1016/j.pce.2016.03.011

Cited by 10 publications

(5 citation statements)

References 4 publications

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“…A similar study carried out in the Dourados and Brilhante Rivers by Sposito et al (2019) related the low OD values found (3.66 -4.86 mg L -1 O2) to the intense urbanization process (domestic effluent disposal) and agriculture (pesticides and agrochemicals). Arpine and Gayane (2016), studying the water of river Akhuryan (Armenia), observed higher DO values (10.3 mg L -1 O2) and lower BOD (2.8 mg L -1 O2) and COD (10.5 mg L -1 O2) values than those of the present study, aforenamed. However, the Akhuryan waters possess a great potential for self-depuration, because its riverbed features a shapeless rocky profile when, adversely, the Trincheira's River waters has a reduced and uniform flow rate.…”

Section: Resultscontrasting

confidence: 68%

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2019

Rev. ambiente água

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With the goal of assessing possible impacts of fish farming in great-volume cage systems on the water quality of a reservoir, the authors provided abiotic data from 72 samples obtained before and after farming site implementation. The figure shows the principal components analysis results for seven limnological variables. The highest dissolved oxygen (OD) concentrations were observed before the fish farm became operational. During the post-production period, the highest phosphorous (PT) and ammonium (NH4) concentrations were observed as well as high conductivity and turbidity values. Authors concluded that fish farming in cage systems located in Solteira Island Reservoir, Brazil, caused significant temporal and sudden spatial changes in water physical and chemical variables. Source: ROSINI, E. F. et al. Water quality in Ponte Pensa Aquaculture Park, Solteira Island Reservoir, SP, Brazil, where fish are cultivated under greatvolume cage system.

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Section: Resultscontrasting

confidence: 68%

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2019

Rev. ambiente água

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“…This situation was also observed in soils and stream sediments of the IRW, Brazil [69][70][71][72]. Therefore, making comparisons based on international reference standards, without taking into account local factors such as geological, hydrological and climatological conditions and the dynamics of land use and cover, which can vary widely from one region to another, can result in underestimating or overestimating environmental risks for a given region [2,3,17]. The present study of the surface waters of the Parauapebas River basin, mainly for Fe and Mn, which exceeded the limits stipulated by the WHO and by CONAMA, illustrates how the current Brazilian legislation needs adjustments that take into account the peculiarities of each region in Brazil.…”

Section: Influence Of Land Use and Coverage On Water Geochemistrymentioning

confidence: 94%

“…In addition, geological, biological, climatic and hydrological conditions can also make it difficult to estimate baseline values in surface waters. They can influence water quality and cause enrichment of chemical element concentrations [13,17]. Therefore, estimating 'natural baseline' values is practically impossible and the term 'environmental baseline' is preferentially adopted, which comprises the effects of natural sources plus diffuse anthropogenic sources [18].…”

Section: Introductionmentioning

confidence: 99%

Source Apportionment of Chemical Elements and Their Geochemical Baseline Values in Surface Water of the Parauapebas River Basin, Southeast Amazon, Brazil

et al. 2022

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The present work aims to evaluate the chemical quality and establish the geochemical baseline values of elements in the surface waters of the Parauapebas River basin (PRB), which is one of the major subbasins in the Itacaiúnas River watershed (IRW) located in the Brazilian Amazon. A total of 327 surface water samples were collected during the rainy and dry seasons in 2017. Results indicate that waters are slightly acidic to alkaline (pH 6 to 8), and there was a strong influence of the seasonal variation on water quality, with higher values of turbidity, Fe, Al, Mn, TDS, etc. in the rainy season. Two geochemical baseline types for the PRB were defined, i.e., ‘conservative baseline’ (CB), represented by the cumulative frequency curve, and the ‘environmental baseline’ (EB), comprising the sum of natural and diffuse anthropogenic contributions, represented by the 98th percentile. Except Fe, Mn and Al, the CB and EB values of various trace elements (Ba, Co, Cr, Cu, Ni, Rb, Sn, Sr, Ti, V and Zn) were lower than the recommended limits of CONAMA 357/05—class 2. The principal component analysis (PCA) identified the major geochemical association (Al-Ti-Cu-Cr-Ni-V), which is an imprint of the local geological setting. Ni and Cr showed enrichment at sites where mafic and ultramafic rocks are concentrated, while Cu concentration is mainly associated with the north and south mineralization belts. High concentrations of Fe and Mn are characteristic of the waters of this region and this is mostly influenced by specific land use activities and intense weathering/erosion of catchment materials. At the upper Parauapebas, anthropogenic contributions associated with soil use and occupation were also important along with the geogenic effects. The obtained results regarding sources of contaminants in some microbasins can be taken as a starting point for future studies on the environmental quality of the region’s water resources.

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“…Segundo Arpine & Gayane (2016) e Netto et al (2013), a urbanização desordenada ocasiona o uso indisciplinado dos corpos hídricos, provocando a degradação ambiental, afetando o desenvolvimento econômico e social, a saúde humana, o equilíbrio dos ecossistemas aquáticos e interferindo principalmente no aproveitamento das águas superficiais, devido à poluição.…”

Section: Introductionunclassified

“…As informações de qualidade de água são complexas, pois diferentes substâncias podem intervir nas propriedades naturais, dependendo das suas concentrações, usos da água, condições hidrológicas, características biofísicas, geologia natural e fontes de poluição (PEREIRA, 2004;TABARI et al, 2011). Porém, os teores das substâncias flutuam ao longo do ano, seja acima ou abaixo dos níveis que podem ser prejudiciais, (ARPINE & GAYANE, 2016). Por conseguinte, torna-se imprescindível estabelecer padrões de qualidade para cada atividade, a fim de manter as características de natureza física, química e biológica, evitando danos ao meio ambiente e saúde pública (BETEMPS et al, 2014).…”

Section: Introductionunclassified

Caracterização espacial e análise da qualidade da água da bacia do arroio Moreira/Fragata, RS

et al. 2018

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RESUMOA urbanização desordenada do solo e as ações antrópicas causam impactos negativos em função da degradação da área e qualidade da água, induzindo a poluição do corpo hídrico, já que a procura pelos recursos excede a disponibilidade. Assim, o objetivo deste trabalho é caracterizar a paisagem e avaliar a qualidade da água da Bacia do Arroio Moreira/Fragata, determinando os fatores que comprometem a área, pois esta é responsável por parte do abastecimento do município de Pelotas/RS. Os parâmetros físico-químicos (pH, condutividade, turbidez, oxigênio dissolvido, DBO5, cloretos, nitrogênio e fósforo totais) e biológicos (coliformes totais e termotolerantes) foram avaliados durante o período de novembro de 2015 a junho de 2016, em seis pontos distribuídos ao longo dos tributários da bacia. Ao realizar a comparação individual dos valores obtidos com as diretrizes da resolução CONAMA n° 357/2005, para água doce classe 2, verificou-se que a porção sul da bacia é mais crítica para a maioria dos parâmetros. Isto pode estar relacionado ao fato desta região possuir maior percentual de urbanização e concentração de indústrias alimentícias, que contribuem com efluentes doméstico e agroindustrial. ABSTRACTThe disorderly urbanization of the soil and the anthropic actions cause negative impacts due to the degradation of the area and quality of the water, inducing the pollution of the water body, since the demand for the resources exceeds the availability. Thus, the objective of this work is to characterize the landscape and evaluate the water quality of the Stream Moreira/Fragata Basin, determining the factors that compromise the area, since this is responsible for part of the supply of the municipality of Pelotas/RS. The physical-chemical parameters (pH, conductivity, turbidity, dissolved oxygen, DBO5, total chlorides, nitrogen and phosphorus) and biological parameters (total and thermotolerant coliforms) were evaluated during the period from November 2015 to June 2016, in six points distributed along the tributaries of the basin. When comparing the values obtained with the guidelines of CONAMA Resolution No. 357/2005 for freshwater class 2, it was verified that the southern portion of the basin is more critical for most of the parameters. This may be related to the fact that this region has a higher percentage of urbanization and concentration of food industries, which contribute to domestic and agroindustrial effluents.

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Determination of background concentrations of hydrochemical parameters and water quality assessment in the Akhuryan River Basin (Armenia)

Cited by 10 publications

References 4 publications

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Source Apportionment of Chemical Elements and Their Geochemical Baseline Values in Surface Water of the Parauapebas River Basin, Southeast Amazon, Brazil

Caracterização espacial e análise da qualidade da água da bacia do arroio Moreira/Fragata, RS

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