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

Pavlíčková, Jana; Zbíral, Jíří; Čižmárová, Eva; Kubáň, Vlastimil

doi:10.1007/s00216-003-1845-x

Cited by 23 publications

(20 citation statements)

References 15 publications

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“…The advantages of this method are its ease of application, costeffectiveness, and consistency of results (35). The aqua-regia method is known to be able to release more heavy metals than a single acid alone (36). The difference in detection methods resulted in a difference from the amounts of As detected in previous studies (17-20, 22, 37).…”

Section: Discussioncontrasting

confidence: 45%

Heavy Metal Analysis of Ortho MTA and ProRoot MTA

Chang

Baek

Yang

et al. 2011

Journal of Endodontics

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Section: Discussioncontrasting

confidence: 45%

Heavy Metal Analysis of Ortho MTA and ProRoot MTA

Chang

Baek

Yang

et al. 2011

Journal of Endodontics

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“…The MS part was regularly controlled by a calibrating solution (all Perkin-Elmer SCIEX, Norwalk, CT, USA). The operating parameters were identical with those given in the previous papers (Pavlíčková et al 2003(Pavlíčková et al , 2005(Pavlíčková et al , 2006.…”

Section: Methodsmentioning

confidence: 98%

“…Tl in soils is usually of the pedogeochemical origin (Sager 1986, Jones et al 1990, Tremel and Mench 1998, Zbíral et al 2000, 2002, Pavlíčková et al 2003, 2005, 2006. There are only very few reports on the anthropogenic soil contamination.…”

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confidence: 99%

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Uptake of thallium from artificially contaminated soils by kale (Brassica oleracea L., var. acephala)

Pavlíčková¹,

Zbíral²,

Smatanová³

et al. 2006

PLANT SOIL ENVIRON

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A pot experiment focused on the study of factors influencing thallium transfer from contaminated soils into kale (green cabbage, Brassica oleracea L. var. acephala, variety Winterbor F1) was evaluated. Three different types of topsoils with naturally low content of thallium (heavy, medium and medium-light soil) were used for pot experiments. The soils were contaminated with thallium sulfate to achieve five levels of contamination (0, 0.52, 2.10, 4.20 and 5.88 mg/kg). There were six replicates for each combination (90 pots in the experiment). The first part of the experiment started in the year of contamination (2001) and continued in 2003. The soil samples and the samples of kale (leaves and stalks were sampled separately) were collected and analysed. Kale was found to be able to accumulate Tl without any influence on yield. The highest thallium concentration was found in the leaves of kale in the first year of the experiment and reached 326 mg/kg dry matter. Bioaccumulation factor (Biological Absorption Coefficient -BAC) was found to be over 80 during the first year of the experiment. In the third year the BAC was around 3 for the soil with the highest pH and the highest organic matter content but as high as 15 for an acid soil with the lowest content of organic matter and the lowest Cation Exchange Capacity (CEC) of soils. The content of thallium in the leaves of kale was found to be 7 to 10 times higher than in the stalks in the third year. In the first year this ratio was up to 18. From these findings it can be concluded that the ability of some plants of Brassicacea family, that are planted as common vegetables, to accumulate thallium is very high and can be a serious danger for food chains. Neutral soils high in CEC and organic matter are able to bind thallium more effectively than poor acid soils and the transfer of Tl into plants from these soils is substantially lower. The uptake of Tl from contaminated soils into kale can be very high and without any negative effect on the plant growth. The transfer of Tl into kale decreases with the time necessary to reach the equilibrium between the added Tl and the soil (ageing of a sample).

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“…Spectroscopic methods are frequently used for multielement determinations because of the sensitivity and selectivity of signals produced by atomic optical emission (Pavlíčková et al 2003). Such analyses require the indispensable pretreatment of dissolution of metals from the sample matrix (Nguyen, Braun, and Leermakers 2005).…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effect of Mesh Size on the Effectiveness of HotplateAqua RegiaExtractions

Hübner

Haslam

2011

Communications in Soil Science and Plant Analysis

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Aqua regia extractions with subsequent inductively coupled plasma determinations are a very common method of elemental analysis of soils and sediments. Before extraction, the material must be dried and sieved. Small variations in this early step can have a significant impact on the later outcomes, especially for unassisted (for example, without ultrasonic or microwave) extraction procedures. Therefore the impact of mesh size on the sieving process was investigated. A mesh size of 2.0 mm or greater yielded unacceptably high variations between the subsamples and a very poor recovery rate when compared to a 0.063-mm sieve. A mesh size of 0.3 mm resulted in the best outcomes, losing nearly no material in the fine sediment samples and about a tenth in the coarse samples. The precision was high for the 0.3-mm samples as well, only negligibly surpassed by the 0.1-mm samples for some materials.

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

Cited by 23 publications

References 15 publications

Heavy Metal Analysis of Ortho MTA and ProRoot MTA

Heavy Metal Analysis of Ortho MTA and ProRoot MTA

Uptake of thallium from artificially contaminated soils by kale (Brassica oleracea L., var. acephala)

Investigation of the Effect of Mesh Size on the Effectiveness of HotplateAqua RegiaExtractions

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