Statistical evaluation of the influence of several sample pretreatment methods on the mercury content detectable by chemical analysis of contaminated soil samples under practical conditions

Rasemann, Winfried; Seltmann, U.; Hempel, Maximilian

doi:10.1007/bf00323340

Cited by 11 publications

(2 citation statements)

References 15 publications

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“…Additionally the influence of sample pretreatment and time between sampling and analysis were also assessed because it has been reported that common pretreatment procedures such as air-drying, homogenization, sieving, or storage in plastic bags can be sources of error, particularly in the case of volatile Hg 0 that can easily be lost (Rasemann et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Thermo-desorption: A valid tool for mercury speciation in soils and sediments?

et al. 2015

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Mercury (Hg) speciation by thermo-desorption is considered an alternative to laborious sequential chemical procedures; hence its popularity has increased in the last years. In this work, steps were taken to improve the information obtained by Hg speciation through thermo-desorption, specifically to improve peak resolution and increase the number of species that can be identified. The thermo-desorption behavior of Hg bound to iron oxides was characterized, as well as a new Hg-humic acid synthetic standard material. In contrast to previous studies, the peak corresponding to the Hg fraction associated with humic acids was clearly separated from the mineral fraction, and identified in some natural samples. With increasing temperature, Hg species are released in the following order: HgCl 2 = Hg associated with Fe 2 O 3 b Hg associated with humic acids b HgS b HgO, with an overlap of HgCl 2 and Hg associated with iron oxides. An evaluation of the effects of sample pre-treatment and storage on Hg speciation was also performed. It was found that sieving to b2 mm improved the sample homogeneity. The importance of fast sample analysis was highlighted, given that after 10 days of storage at room temperature, volatile Hg 0 could no longer be identified in the sample. The suitability of thermo-desorption for mercury speciation in soils and sediments is discussed.

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Section: Introductionmentioning

confidence: 99%

Thermo-desorption: A valid tool for mercury speciation in soils and sediments?

et al. 2015

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“…98 Sample pretreatment contributed substantially to the variance in results and was of the same order as the contribution from sample inhomogeneity. Welz et al 283 and Baxter et al 284 have conducted speciation studies on mercury in soils.…”

Section: Miscellaneous Techniquesmentioning

confidence: 97%

Determination of Metals in Soils

Crompton

2015

Determination of Metals in Natural Waters, Sediments and Soils

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Industrial Waste Dumps, Sampling and Analysis

Rasemann

2000

Encyclopedia of Analytical Chemistry

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Landfills are an important source of industrial pollution of surface and groundwater area in the vicinity of waste heaps. Hydrosphere pollution is mainly a consequence of the formation of leachate with high concentrations of toxic substances. In addition to substances considered as a typical toxic materials such as cadmium and lead, leaching water may contain high concentrations of other ions. These include the sulfates, chlorides and sodium. The paper presents the results of landfill leachate of colliery waste tip "Panewniki" located in the catchment of river Jamna (Mikolow). Post coal mine waters are characterized by very high electrical conductivity, which ranges from 7.5 to 8.3 mS × cm -1 in the case of the first effluent and from 7.9 to 10.6 mS × cm -1 in the case of the second effluent, respectively. Such high values of conductivity are caused by leaching of waste deposited in a heap. As a result of leaching process the increase of the concentration of individual ions also occurs. These can include sodium and chloride. The maximum sodium concentration may exceed the 2500 mg × dm -3 and 560 mg × dm -3 chlorides.Inflow of effluents into the river Jamna affects significant changes in water quality. The statistically significant differences in the concentrations of sodium and chloride in the waters above and below Jamny flow of leachate were demonstrated.

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Statistical evaluation of the influence of several sample pretreatment methods on the mercury content detectable by chemical analysis of contaminated soil samples under practical conditions

Cited by 11 publications

References 15 publications

Thermo-desorption: A valid tool for mercury speciation in soils and sediments?

Thermo-desorption: A valid tool for mercury speciation in soils and sediments?

Determination of Metals in Soils

Industrial Waste Dumps, Sampling and Analysis

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