Comparison of Several Soil Extractants for Determination of Thallium

Zbíral, Jíří; Pavlíčková, Jana; Havlíková, Šárka; Čižmárová, Eva; Němec, Pavel; Sáňka, Milan; Kubáň, Vlastimil; Medek, Petr

doi:10.1081/css-120014524

Cited by 9 publications

(12 citation statements)

References 9 publications

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“…Considering the high total lability of thallium together with its suspected high bioaffinity based on observations of its indiscriminant uptake with K + , a noteworthy implication of these results is that the entire solution concentration of the highly toxic element meets the basic conditions for bioavailability as outlined by van Leeuwen (1999). High recovery of thallium by ammonium nitrate than the complexing reagents like EDTA obtained in the present study agrees with the earlier reported data by Zbiral et al (2002) for some Czech republic soils samples.…”

Section: Resultssupporting

confidence: 82%

“…Microorganisms are reported to be relatively sensitive to thallium, and therefore the inhibition of nitrate formation in Tl-polluted soils may have an agronomic impact. There is also an opinion that thallium is likely to be involved in microbial cycling by possible methylation (Weinberg 1977). As far as relatively high contents of Tl in soils, a potential risk for humans can arise at levels around 1 mg kg -1 .…”

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confidence: 99%

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Assessment of Extractants for the Determination of Thallium in an Accidentally Polluted Soil

Rao

Ruiz-Chancho

Sahuquillo

et al. 2008

Bull Environ Contam Toxicol

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Thallium is a rare and easily dispersed element with high toxicity to organisms. Relatively high levels of thallium (approximately 9.58 mg kg(-1)) had been found in aqua regia soil extract of an accidentally polluted soil from south of Spain. To assess the available and leachable portions of thallium in the polluted soil, single and sequential extraction procedures have been utilized. Further, X-ray diffraction and scanning electron microscopic studies have also been used to find out the mineral phases. The amount of thallium extracted by the extracting agents in comparison to aqua regia, as well as the different phase associations are discussed.

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Section: Resultssupporting

confidence: 82%

mentioning

confidence: 99%

Assessment of Extractants for the Determination of Thallium in an Accidentally Polluted Soil

Rao

Ruiz-Chancho

Sahuquillo

et al. 2008

Bull Environ Contam Toxicol

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“…However, DTPA-extractable thallium was extremely low compared with all of the other extractants even though this complexing reagent has been used as a powerful extractant for most other heavy metals including Cd, Cu, Fe, Mn, and Zn, after being introduced by Lindsay and Norwell (1978) (Lindsay and Norvell 1978) 3 Extractant for exchangeable fraction BCR sequential extraction method (Rauret et al 1999) 4 Extractant for exchangeable fraction of Tessier's sequential extraction method (Tessier et al 1979) to predict micronutrient deficiencies and to estimate metal availability for plants. Rao et al (2008) reported somewhat similar results with several single extractants from an accidently thallium-contaminated soil; the order of thallium extractability was 1.0 M HCl ) These results are basically in agreement with a report from Zbiral et al (2002). Higher thallium extractability with ammonium and potassium salts/acids compared with other common strong extractants might be related to the ionic radius (1.49 Å ) of thallium (Tl ?…”

Section: Resultssupporting

confidence: 82%

Distributions and Concentrations of Thallium in Korean Soils Determined by Single and Sequential Extraction Procedures

Lee

Kim

Ahn³

2015

Bull Environ Contam Toxicol

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The objectives of this study were to investigate the distribution of thallium in soils collected near suspected areas such as cement plants, active and closed mines, and smelters and to examine the extraction of thallium in the soils using 19 single chemical and sequential chemical extraction procedures. Thallium concentrations in soils near cement plants were distributed between 1.20 and 12.91 mg kg(-1). However, soils near mines and smelters contained relatively low thallium concentrations ranging from 0.18 to 1.09 mg kg(-1). Thallium extractability with 19 single chemical extractants from selected soils near cement plants ranged from 0.10% to 8.20% of the total thallium concentration. In particular, 1.0 M NH4Cl, 1.0 M (NH4)2SO4, and 1.0 M CH3COONH4 extracted more thallium than other extractants. Sequential fractionation results of thallium from different soils such as industrially and artificially contaminated soils varied with the soil properties, especially soil pH and the duration of thallium contamination.

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“…Tl and its compounds are non-essential, and they are toxic to all organisms. Demand for determination of Tl, especially in countries where soils derived from melanocratic granites occur, is expected to rise because Tl in soils is mostly of pedogeochemical origin [7,8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

Comparison of aqua regia and HNO3-H2O2 procedures for extraction of Tl and some other elements from soils

et al. 2003

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The relationship between aqua regia (ISO 11466) and HNO(3)-H(2)O(2) (ISO/CD 20279) extraction procedures for atomic emission spectrometric (ICP/OES and ICP/MS) determinations of Tl, P, Mn, Fe, Mg, Ca, Sr, Al, K, As, Bi, Zn, Pb, Co, Cd, Ni, V, Be, Cu and Cr was investigated. Soil samples (155) representing areas with different contents of the elements were selected for the comparison. Tl was the element of the highest interest and therefore the sampling sites were chosen to achieve as wide range of Tl contents as possible. Both extraction procedures are comparable in results (differences lower than 10% for the most of the elements) for all the tested elements. Statistically non-significant differences between the two extraction procedures were found for P, Zn, V and K (the slope was very close to 1 and the intercept included zero). Statistically significant values of intercepts were found for Fe, Al, Ca, Cd, Sr and Ni. Significantly higher results for aqua regia were found for Cu (12%), Pb (17%), Mn (11%) and lower results by aqua regia were found for Mg (4%), As (13%), Co (20%), Be (11%), Cr (4%) and Bi (6%). The results for Tl, the element of the highest interest, after HNO(3)-H(2)O(2) extraction procedure, were approximately 6% higher than the results after aqua regia extraction. Content of Tl in the soil samples was from 0.08 to 2.8 mg kg(-1). A highly significant linear relationship was found (R(2)=0.97).

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Comparison of Several Soil Extractants for Determination of Thallium

Cited by 9 publications

References 9 publications

Assessment of Extractants for the Determination of Thallium in an Accidentally Polluted Soil

Assessment of Extractants for the Determination of Thallium in an Accidentally Polluted Soil

Distributions and Concentrations of Thallium in Korean Soils Determined by Single and Sequential Extraction Procedures

Comparison of aqua regia and HNO3-H2O2 procedures for extraction of Tl and some other elements from soils

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