Multivariate analysis of the water quality variation in the Serra da Estrela (Portugal) Natural Park as a consequence of road deicing with salt

Rodrigues, Pedro; Rodrigues, Ricardo; Costa, Bruno H F; Martins, Antonio A L T Tavares; Silva, Joaquim C. G. Esteves da

doi:10.1016/j.chemolab.2010.04.014

Cited by 23 publications

(8 citation statements)

References 18 publications

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“…The residence time will determine the evolution of Na + and Cl − concentrations. If the residence time is lower than a year, these concentrations will diminish before the next winter season, forming annual cycles [36,65]. If the residence time is longer, Na + and Cl − will not be flushed completely between salting seasons and will still be present in waters next winter, leading to a gradual increase of these concentrations from 1 year to another [62].…”

Section: Surface Watersmentioning

confidence: 99%

NaCl Material for Winter Maintenance and Its Environmental Effect

Đuričković¹

2020

Salt in the Earth

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All over the world, winter maintenance is based on the application of the NaCl salt on roads, a product necessary for the elimination of slippery conditions. The quantities used for the salting operations are increasing with the development of the road network (in France, up to 2 million tons are applied each winter). This chapter will present the salt used as a deicer (its origin and chemical composition) and its chemical properties that are exploited for that purpose. Furthermore, an overview of the means of its transfer from the roads to the environment (soils and waters) as well as its impacts on these media will be presented, a special attention being devoted to the soil. The interactions of salt with other road pollutants and the treatment possibilities in the road pollution context will be discussed.

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Section: Surface Watersmentioning

confidence: 99%

NaCl Material for Winter Maintenance and Its Environmental Effect

Đuričković¹

2020

Salt in the Earth

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“…In these cases, multivariate statistical techniques have been successfully applied (Massart et al 1988;Wenning and Erickson 1994;Dixon and Chiswell 1996;Suárez 2012;Kumarasamy et al 2014;Ogwueleka 2015). Multivariate analysis is useful to reduce the dimensionality of the data set, to evaluate the relative importance of combinations of variables and to facilitate the understanding of multiconstituent chemical and physical measurements (Vega et al 1998;Helena et al 2000;Rodrigues et al 2010;Cid et al 2011;and references therein). Wiens (2002) noted that, in studies on river systems, it is important to consider both longitudinal and lateral dimensions, as well as seasonal variations.…”

Section: Introductionmentioning

confidence: 98%

Hydrochemical and sedimentological dynamics in a subtropical plain river: assessment by multivariate statistical analysis

et al. 2016

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Understanding the transport dynamics of sediments and soluble components is critical when ecosystems could be adversely affected. This study examined some environmental factors influencing the spatial and temporal variations of water-sediment interactions in Negro River, northeast of Argentina, a subtropical plain fluvial system with anthropogenic influence. Samples of water and bottom sediments were collected from four sampling stations in four sampling campaigns spread over 2 years. Chemical parameters, including pH, conductivity, major ions, concentration of suspended sediments, extractable major cations and particle size of sediments, were determined. The experimental data were interpreted by classical hydrogeochemical methods and statistical methods. Multivariate statistical tools were applied to reduce the dimensionality of the data set and to evaluate the relative importance of combinations of environmental variables on sediment dynamics. The results showed that the variability of the hydrochemistry and the sediment chemistry is controlled by longitudinal and seasonal factors, whereas differences across the river section were nonsignificant. The concentration of suspended solids and the abundance of fine-grained materials in bottom sediments were inversely correlated with the concentration of some metals with agglutinant and coagulant properties in sediments. This corroborates the presence of fine particle aggregates, also evidenced by classical grain-size analysis. Thus, particle disaggregation by chemical methods is not recommended, as it could lead to misinterpretation when the objective is to evaluate the dynamics of sediments in natural environments. This study highlights the importance of analyzing multiple dimensions (spatial and temporal) to understand the dynamics of fluvial sediments, especially in plain rivers.

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“…As reflexões relativas à integração das variáveis de qualidade da água com a gestão de recursos hídricos são, em geral, no sentido de estabelecer um conjunto mínimo de variáveis mais relevantes para o monitoramento (COELHO, 2013;REINELT et al, 1992;BALTACI et al, 2008). Como exemplo tem-se a aplicação da Análise Estatística Multivariada para o reconhecimento de padrões entre pontos e variáveis de amostragem, com intuito de reduzir o número de variáveis e pontos nos programas de monitoramento (GEIB;EINAX, 1996;FRANÇA et al, 2009;RODRIGUES et al, 2010;GUEDES et al, 2012).…”

Section: Introductionunclassified

Variação nictemeral de qualidade da água em rios urbanos: implicações no monitoramento

Carvalho¹,

Männich²,

Pinto³

et al. 2016

REGA

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O monitoramento de qualidade da água apresentam escassas informações sobre o comportamento nictemeral de corpos d'água lóticos. O monitoramento contínuo e frequente adequado a um ambiente dinâmico é muitos vezes substituído por coletas únicas, cuja representatividade depende das variações ao longo do dia. Este conceito foi abordado por meio de três campanhas de monitoramento de parâmetros físicos e químicos de qualidade da água durante 14 horas ao longo do dia, como estudo de caso do Rio Barigüi, em Curitiba-PR. Os resultados sugerem significativas diferenças entre as campanhas, principalmente em períodos de menor vazão do corpo hídrico, e alguns parâmetros apresentam variações marcantes ao longo do dia, o que destaca a importância da análise nictemeral. A comparação realização em termos da variância dos dados amostrais sugere que amostragens únicas durante o dia não são capazes de reproduzir a variância da amostragem nictemeral.

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Multivariate analysis of the water quality variation in the Serra da Estrela (Portugal) Natural Park as a consequence of road deicing with salt

Cited by 23 publications

References 18 publications

NaCl Material for Winter Maintenance and Its Environmental Effect

NaCl Material for Winter Maintenance and Its Environmental Effect

Hydrochemical and sedimentological dynamics in a subtropical plain river: assessment by multivariate statistical analysis

Variação nictemeral de qualidade da água em rios urbanos: implicações no monitoramento

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