Case Study of the Relationship between <i>Aqua Regia</i> and <i>Real Total</i> Contents of Harmful Trace Elements in Some European Soils

Taraškevičius, Ričardas; Zinkutė, Rimantė; Stakėnienė, Rimutė; Radavičius, Marijus

doi:10.1155/2013/678140

Cited by 24 publications

(14 citation statements)

References 25 publications

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“…About 18% of the total content of As and Mo may not be extracted from soil even by aqua regia, because their median degree of extractability in aqua regia from some European soil samples analysed by ISE participants is only 82% (Taraškevičius et al 2013). About 18% of the total content of As and Mo may not be extracted from soil even by aqua regia, because their median degree of extractability in aqua regia from some European soil samples analysed by ISE participants is only 82% (Taraškevičius et al 2013).…”

Section: Discussionmentioning

confidence: 99%

“…Respective methods are described in Baltrūnas et al (2013c). The contents of 10 harmful chemical elements As, Ba, Cr, Cu, Mn, Mo, Ni, Pb, V, zn were compared with their maximum permitted concentrations (MPC) in soil (Taraškevičius et al 2013). Energy-dispersive x-ray fluorescence equipment SPECTRO XEPOS with TurboQuant for pressed pellets calibration method was used for Step the determination of total contents of chemical elements in 680 samples.…”

Section: Methodsmentioning

confidence: 99%

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Quaternary Interglacial Sediments as Possible Natural Sources of Arsenic and Molybdenum Anomalies in Stream Sediments in Lithuania

Zinkutė

Baltrūnas

Taraškevičius

et al. 2014

Journal of Environmental Engineering and Landscape Management

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Trinitrotoluene (TNT), a commonly used explosive for military and industrial applications, can cause serious environmental pollution. 28-day laboratory pot experiment was carried out applying bioaugmentation using laboratory selected bacterial strains as inoculum, biostimulation with molasses and cabbage leaf extract, and phytoremediation using rye and blue fenugreek to study the effect of these treatments on TNT removal and changes in soil microbial community responsible for contaminant degradation. Chemical analyses revealed significant decreases in TNT concentrations, including reduction of some of the TNT to its amino derivates during the 28-day tests. The combination of bioaugmentation-biostimulation approach coupled with rye cultivation had the most profound effect on TNT degradation. Although plants enhanced the total microbial community abundance, blue fenugreek cultivation did not significantly affect the TNT degradation rate. The results from molecular analyses suggested the survival and elevation of the introduced bacterial strains throughout the experiment. Reference to this paper should be made as follows: Nõ lvak, H.; Truu, J.; Limane, B.; Truu, M.; Cepurnieks, G.; Bartkevičs, V.; Juhanson, J.; Muter, O. 2013. Microbial community changes in TNT spiked soil bioremediation trial using biostimulation, phytoremediation and bioaugmentation, Journal of Environmental Engineering and Landscape Management 21(3): 153Á162. http://dx.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Quaternary Interglacial Sediments as Possible Natural Sources of Arsenic and Molybdenum Anomalies in Stream Sediments in Lithuania

Zinkutė

Baltrūnas

Taraškevičius

et al. 2014

Journal of Environmental Engineering and Landscape Management

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“…Past works have shown that aqua regia extraction may lead to an underestimation of the amount of metals such as Co, Cd, Cr and Ni by up to 50% [18], [19]. The reasons for this underestimation lies on the type of matrix and the strength of the solvent itself, which is unable to dissolve silicates and aluminium and iron oxides to which some metals may be bound.…”

Section: Introductionmentioning

confidence: 99%

Comparison of total and aqua regia extractability of heavy metals in sewage sludge: The case study of a certified reference material

Anna

Held

Linsinger

et al. 2017

TrAC Trends in Analytical Chemistry

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A number of different digestion methods, including aqua regia extraction following two ISO guides were used in an inter-laboratory comparison study. The results obtained showed comparable values for the total and aqua regia extractable content of As, Cu, Fe, Hg, Pb and Zn, while Cd, Co and Cr results were about 10% lower when aqua regia was employed. This small difference was covered by the between-laboratory relative standard deviation of the measurements; therefore in this study no difference in the extraction of the elements by the employed methods was found. The high organic matter content, together with low SiO2 and refractory aluminium and iron oxide amount as well as the small particle size of the sewage sludge material was reputed to have an effect on the extracting capacity of a weaker solvent such as aqua regia, bringing its results close to the total content ones.

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“…:HNO 3conc. , 1:3 ratio), [22]. Next the concentrations of bioavailable (Zn Bio ) as well as reactive (Z nReac ) zinc forms were assessed by the chemical tests 0.10 mol NaNO 3 dm -3 [23] and 0.11 mol CH 3 COOH dm -3 (first fraction), according to the BCR method [24], respectively.…”

Section: Soil Chemical Analysesmentioning

confidence: 99%

Biogeochemical Assessment of a Zn-Contaminated Site Using Scots Pine (Pinus sylvestris L.) Needles as Phytoindicators

Diatta¹,

Andrzejewska²,

Chudzińska³

et al. 2016

Pol. J. Environ. Stud.

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The aim of our study was to evaluate the mobility of Zn in soils subjected to the activity of a zinc smelter and to assess the contamination of 1-and 2-year-old needles of Scots pine species sensitive to and tolerant of heavy metal contamination, particularly zinc. The trees were selected on the basis of their morphology, i.e., tolerant ones exhibited quite normal growth shape, but sensitive ones were more or less dwarves. Mineralogical composition revealed the prevalence of kaolinite in all soils except for two samples, where smectite dominated. Zinc contamination exceeded 30 times the geochemical background, and the reactive Zn forms represented 34.6% of total Zn content (Zn Total ). Proton generation capacity (α) indices calculated for the bioavailable Zn fraction (Zn Bio ) were 59% higher compared to the reactive Zn pool (Zn Reac ). Two-year-old tolerant (T) pine needles accumulated 21.9, 38.2, and 13.6% more Zn, Fe, and Mg, respectively, as compared to 1-year-old ones. For sensitive (S) needles, the range followed: 12.4, 48.8, and 7.3%, respectively. Iron was considered a "strategic survival element" for both pines growing under high zinc pollution.The transfer of Zn ions from the soil environment to plants still remains the basic source of maintaining its high concentrations in the needles, since air emissions ceased in 1996. The amounts of Zn accumulated by Scots pine at crucial years of metallurgical emissions may be considered as an additional time-constant source due to the evergreen vegetative lifecycle.

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Case Study of the Relationship between Aqua Regia and Real Total Contents of Harmful Trace Elements in Some European Soils

Cited by 24 publications

References 25 publications

Quaternary Interglacial Sediments as Possible Natural Sources of Arsenic and Molybdenum Anomalies in Stream Sediments in Lithuania

Quaternary Interglacial Sediments as Possible Natural Sources of Arsenic and Molybdenum Anomalies in Stream Sediments in Lithuania

Comparison of total and aqua regia extractability of heavy metals in sewage sludge: The case study of a certified reference material

Biogeochemical Assessment of a Zn-Contaminated Site Using Scots Pine (Pinus sylvestris L.) Needles as Phytoindicators

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