Correlation between nitrate concentration in groundwater and parameters affecting aquifer intrinsic vulnerability

Debernardi, Laura; Luca, Domenico Antonio De; Lasagna, Manuela

doi:10.1007/s00254-007-1006-1

Cited by 89 publications

(67 citation statements)

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“…Dilution in particular has been found to play an important role in determining the degree of contamination in the case of conservative nonreactive and nonsorbing solutes (Bekesi and McConchie 2002;Lasagna 2006;Stigter et al 2006;Debernardi et al 2008;Farooq et al 2011;Nishikiori et al 2012). …”

Section: Introductionmentioning

confidence: 99%

Effect of the dilution process on the attenuation of contaminants in aquifers

et al. 2013

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AperTO -Archivio Istituzionale Open Access dell'Università di TorinoEffect of the dilution process on the attenuation of contaminants in aquifers / M Lasagna ; D De Luca ; Laura Debernardi ; P Clemente. -(2013), pp. 2767-2784. Original Citation:Effect of the dilution process on the attenuation of contaminants in aquifers ABSTRACTThis paper discusses the effects of the dilution process on levels of aquifer contamination attenuation, developing analytical equations for application in theoretical and practical cases. The key finding is that, in aquifers, the dilution process causes a reduction of the contaminant concentration. Analytical equations for the assessment of the contaminant attenuation capacity, by means of the dilution process in an aquifer, are put forward. In particular, the attenuation of the contaminant concentration in an aquifer, and thus the dilution, are described by the volumetric flow rate per unit width perpendicular to the flow direction (qu). Moreover, a classification of qu was developed, considering six classes of attenuation capacity due to dilution.For the equations validation, nitrate contamination attenuation due to dilution was analysed in two sample areas in Piedmont (North-West Italy). The results confirmed the hypothesis, evidencing high nitrate concentrations in areas with low qu values, connected to low dilution rate of the contaminant in the groundwater; vice versa, low nitrate concentrations were evidenced in areas with high qu values, due to a high nitrate dilution rate.Key words: contaminant attenuation, dilution, groundwater resources, nitrate, ItalyThe final publication is available at Springer via http://dx.doi.org/10.1007Springer via http://dx.doi.org/10. /s12665-013-2336 2

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Section: Introductionmentioning

confidence: 99%

Effect of the dilution process on the attenuation of contaminants in aquifers

et al. 2013

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“…The parametric point count methods are generally not able to describe and analyse important physical processes, such as nitrification/denitrification and nitrate dilution in the aquifer (deBernardi et al, 2008). The knowledge of geochemical processes and pollution sources is necessary for interpretation of the groundwater vulnerability results and the isotopic signature of nitrate in groundwater is valuable evidence (uhan, 2011).…”

Section: + -W -mentioning

confidence: 99%

Groundwater vulnerability to nitrate pollution of alluvial aquifers in Slovenia – Lower Savinja Valley case study

Uhan¹

2017

Geologija

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The article introduced an upgraded approach to assessing the groundwater vulnerability to nitrate pollution. By using the results of field measurements and process-based models outputs, author takes into account effects of nitrogen biogeochemical processes, that were hitherto underestimated in the evaluation schemes. The upgraded methodological self-validated approach to vulnerability assessment in Lower Savinja Valley case study increases reliability and thus effectiveness of decision-making in the water management. This was achieved by using the process-based models outputs in the new pattern classification schemes with the predictions of pollution phenomena. Spatial prediction of groundwater nitrate pollution probability and vulnerability classification of the study area in Lower Savinja Valley was assessed by weights-of-evidence model (WofE). The increased degree of probability for the groundwater contamination with nitrates was determined for 62.5 percent of the aquifer area of the Lower Savinja Valley. About 27 percent of the most nitrate vulnerable areas in Lower Savinja Valley need groundwater nitrate mitigation through land-use measures and public sewage system construction. IzvlečekČlanek predstavlja nadgrajen pristop ocenjevanja ranljivosti na nitratno onesnaženje podzemnih voda. Ob uporabi rezultatov terenskih meritev in izhodov fizikalno zasnovanih modelov avtor upošteva tudi učinke dušikovih biogeokemičnih procesov, ki so bili v dosedanjih ocenjevalnih shemah podcenjeni. Nadgrajen metodološki samopotrditveni pristop ocenjevanja ranljivosti podzemne vode na primeru Spodnje Savinjske doline zvišuje zanesljivost in učinkovitost odločanja pri upravljanju voda. V ta namen so bili izhodi procesno zasnovanih modelov uporabljeni v novih prostorskih klasifikacijskih shemah, ki omogočajo napoved verjetnosti pojava onesnaženja. Z modelom teže evidenc WofE je bila ocenjena verjetnost pojava z nitratom onesnažene podzemne vode v študijsko izbranem aluvialnem vodonosniku. Povišana stopnja verjetnosti onesnažene podzemne vode z nitratom je bila ugotovljena na 62,5 odstotkih območja vodonosnika Spodnje Savinjske doline. Na okoli 27 odstotkih najbolj ranljivih območij Spodnje Savinjske doline so za zmanjšanje onesnaženosti podzemne vode z nitrati potrebni ukrepi na področju rabe prostora in izgradnje sistema odvodnje komunalne odpadne vode.

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“…By far the most commonly used water quality indicator is nitrate-nitrogen (Debernardi et al 2008;Holman et al 2005;Panagopoulos et al 2006;Rupert 2001), likely owing to its prevalence in rural settings, relatively inexpensive analysis costs, and abundant historical data. This indicator, however, is not conservative as it is affected by various nitrogen cycling processes in the soil (Addiscott 2005;Kendall 1998); nitrate can undergo denitrification (Bottcher et al 1990;Fukada et al 2004).…”

Section: Intrinsic Susceptibility Accuracymentioning

confidence: 99%

“…The comparison of susceptibility with groundwater quality has yielded mixed but typically positive results for various methods including GOD (Debernardi et al 2008), DRASTIC (Panagopoulos et al 2006) and AVI (Wei 1998). Explanations for less than ideal correlations include a lack of analysis for dilution and denitrification (Debernardi et al 2008), poor well log descriptions and discontinuous confining layers (Wei 1998), pumping-induced draw of contaminants (Holman et al 2005), attenuation and degradation of contaminants (Holden et al 1992), and the presence of perched water tables (Ronneseth et al 1995).…”

Section: Intrinsic Susceptibility Accuracymentioning

confidence: 99%

“…Explanations for less than ideal correlations include a lack of analysis for dilution and denitrification (Debernardi et al 2008), poor well log descriptions and discontinuous confining layers (Wei 1998), pumping-induced draw of contaminants (Holman et al 2005), attenuation and degradation of contaminants (Holden et al 1992), and the presence of perched water tables (Ronneseth et al 1995). Groundwater quality data have also been used to optimize and revise susceptibility mapping methods.…”

Section: Intrinsic Susceptibility Accuracymentioning

confidence: 99%

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Assessing risk to groundwater quality using an integrated risk framework

2013

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Risk to groundwater quality is defined as a function of susceptibility, hazard and consequence. Aquifer susceptibility combines the intrinsic susceptibility of the physical system with potential preferential pathways. Hazard threats are assessed based on the potential impact and probability of release. The consequence is the financial cost of the loss of the resource. The risk assessment methodology is applied to the Township of vi

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Correlation between nitrate concentration in groundwater and parameters affecting aquifer intrinsic vulnerability

Cited by 89 publications

References 15 publications

Effect of the dilution process on the attenuation of contaminants in aquifers

Effect of the dilution process on the attenuation of contaminants in aquifers

Groundwater vulnerability to nitrate pollution of alluvial aquifers in Slovenia – Lower Savinja Valley case study

Assessing risk to groundwater quality using an integrated risk framework

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