Nitrification potential in field-collected soils contaminated with Pb or Cu

Sauvé, Sébastien; Dumestre, Alain; McBride, Murray B.; Gillett, James W.; Berthelin, J.; Hendershot, William H.

doi:10.1016/s0929-1393(98)00166-8

Cited by 54 publications

(32 citation statements)

References 26 publications

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“…The current literature (Sauvé et al 1999(Sauvé et al , 2000bTack and Verloo 1995) agrees that total soil metal is not a good predictor of bioavailability or potential risk from soil contamination. However, the determination of potential toxicity and bioavailability of trace elements in soils is difficult to perform and no widely accepted method exists.…”

Section: Introductionmentioning

confidence: 91%

Soil Organic Matter Impacts upon Fluxes of Cadmium in Soils Measured using Diffusive Gradients in Thin Films

Rachou

Hendershot

Sauvé

2007

Communications in Soil Science and Plant Analysis

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Classical analytical methods limit understanding of the dynamics of geochemical processes in soils. The technique of diffusive gradients in thin films (DGT) allows the quantification of the mobilization fluxes of traces metals in soils and more specifically the metal supply from the soil's solid phase. Diffusive gradients in thin films, measuring fluxes from soil solids to solutions, were reported in three different cadmium (Cd)-contaminated soils with different levels of soil organic matter (SOM). The soil solution concentration ratio between the labile Cd, determined using differential pulse anodic stripping voltammetry, and the total Cd obtained by inductively coupled plasma-atomic emission spectrometry was compared. The data suggest that SOM affected the complexation of Cd in the soil solution, and the values obtained by DGT also demonstrated that the sorption of the Cd to the solid phase was also affected. The fluxes of Cd into the DGT were 1619 decreased when organic matter was added to the soils but were also decreased when SOM was reduced using hydrogen peroxide (H 2 O 2 ).

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Section: Introductionmentioning

confidence: 91%

Soil Organic Matter Impacts upon Fluxes of Cadmium in Soils Measured using Diffusive Gradients in Thin Films

Rachou

Hendershot

Sauvé

2007

Communications in Soil Science and Plant Analysis

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“…In addition, OM improved the regression model (R 2 =0.32), being a positively related with PNR. Similarly, Sauvé et al (1999) indicated that the response of this bioassay was determined by pH (range of 3.5 to 7.8) and soil OM (range of 0.6 to 5.8%) (R 2 =0.43).…”

Section: Effect Of Physicochemical Properties Of Soils On Pnr and Nminmentioning

confidence: 83%

“…Specifically, Smolders et al (2001) indicated that soil pH (average of 5.4 ± 1.5) is the main variable determining the PNR of non-contaminated soils. Likewise, Sauvé et al (1999) found that pH (average of 6.3 ± 1.2) is a significant variable determining PNR in field-contaminated soils. These authors reported that the nitrification process was inhibited at pH values below 5.6 and 6.0, respectively.…”

Section: Introductionmentioning

confidence: 88%

“…These authors reported that the nitrification process was inhibited at pH values below 5.6 and 6.0, respectively. In addition, Sauvé et al (1999) indicate that optimal pH is between 6.5 and 7.5. However, as it was reported by Verdejo et al (2015), field-contaminated soils from central Chile have a pH predominantly circumneutral (average of 7.0 ± 0.5).…”

Section: Introductionmentioning

confidence: 99%

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Nitrification and nitrogen mineralization in agricultural soils contaminated by copper mining activities in Central Chile

Moya

Verdejo

Yáñez

et al. 2017

J. Soil Sci. Plant Nutr.

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Microbiological bioassays of nitrification and nitrogen mineralization have been used for evaluation of soil quality on metal-contaminated soils. We evaluated the effectiveness of nitrification and nitrogen mineralization bioassays as quality indicators of soil degradation caused by metal contamination. We performed standard tests based on protocols of ISO 14238 (2012) and ISO 15685 (2012) on 90 soil samples collected from agricultural areas in central Chile that were historically contaminated by mining activities. Potential nitrification rate (PNR) was best explained by pH and organic matter content (OM) (R 2 =0.32), while nitrogen mineralization (Nmin) was best explained by OM and clay content (R 2 =0.44). Following normalization of the bioassays responses with respect to OM yielded significant correlations between PNR and pH and total Cu content (R 2 =0.22), and between Nmin and clay and total Cu contents (R 2 =0.19). However, inasmuch as total Cu content improved the regression model showing the inhibitory effect of Cu in both bioassays, it accounted for a mere small proportion of the variance. This was despite the wide range of Cu contents in the soils studied (51-2878 mg kg -1 ). Hence, due to the known sensitivity of the nitrification and nitrogen mineralization process to physicochemical characteristics of soils, these bioassays seem to have limited applicability for metal toxicity assessment in metalcontaminated soils.

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“…The concentrations of F À and NO 2À 2 showed no correlation to any other ion. This is due to formation of NO 2À 2 from ammonium (Sauve et al, 1999), and input of F À from other sources than the dominant ions, possibly sharing a common cation with one of the dominant salts.…”

Section: Identification Of Ions Sources By Multivariable Analysismentioning

confidence: 99%

Assessment of salinity status in intensively cultivated soils under semiarid climate, Murcia, SE Spain

Acosta

Faz

Jansen

et al. 2011

Journal of Arid Environments

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Nitrification potential in field-collected soils contaminated with Pb or Cu

Cited by 54 publications

References 26 publications

Soil Organic Matter Impacts upon Fluxes of Cadmium in Soils Measured using Diffusive Gradients in Thin Films

Soil Organic Matter Impacts upon Fluxes of Cadmium in Soils Measured using Diffusive Gradients in Thin Films

Nitrification and nitrogen mineralization in agricultural soils contaminated by copper mining activities in Central Chile

Assessment of salinity status in intensively cultivated soils under semiarid climate, Murcia, SE Spain

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