Fractionation and Mobility of Thallium in Volcanic Ashes after Eruption of Eyjafjallajökull (2010) in Iceland
نویسندگان
چکیده
Volcanic ash contains thallium (Tl), which is highly toxic to the biosphere. The aim of this study was to determine the Tl concentration in fractions of volcanic ash samples originating from the Eyjafjallajökull volcano. A sequential extraction scheme allowed for a study of element migration in the environment. Differential pulse anodic stripping voltammetry using a flow measuring system was selected as the analytical method to determine Tl content. The highest average content of Tl in volcanic ash was determined in the fraction entrapped in the aluminosilicate matrix (0.329 µg g(-1)), followed by the oxidizable fraction (0.173 µg g(-1)). The lowest content of Tl was found in the water soluble fraction (0.001 µg g(-1)); however, this fraction is important due to the fact that Tl redistribution among all the fractions occurs through the aqueous phase.
منابع مشابه
Health effects following the Eyjafjallajökull volcanic eruption: a cohort study
OBJECTIVES The study aimed to determine whether exposure to a volcanic eruption was associated with increased prevalence of physical and/or mental symptoms. DESIGN Cohort, with non-exposed control group. SETTING Natural disasters like volcanic eruptions constitute a major public-health threat. The Icelandic volcano Eyjafjallajökull exposed residents in southern Iceland to continuous ash fal...
متن کاملCharge structure in volcanic plumes: a comparison of plume properties predicted by an integral plume model to observations of volcanic lightning during the 2010 eruption of Eyjafjallajökull, Iceland
Observations of volcanic lightning made using a lightning mapping array during the 2010 eruption of Eyjafjallajökull allow the trajectory and growth of the volcanic plume to be determined. The lightning observations are compared with predictions of an integral model of volcanic plumes that includes descriptions of the interaction with wind and the effects of moisture. We show that the trajector...
متن کامل, B . ; Folch , A . ; Hensch , M . ; Matthias , V . : Volcanic ash over Europe during the eruption of Eyjafjallajökull on
15 During the eruption of Eyjafjallajökull on Iceland in April/May 2010, air traffic over Europe 16 was repeatedly interrupted because of volcanic ash in the atmosphere. This completely 17 unusual situation in Europe leads to the demand of improved crisis management, e.g. 18 European wide regulations of volcanic ash thresholds and improved forecasts of theses 19 thresholds. However, the quality...
متن کاملplumes: a comparison of plume properties predicted by an integral plume model to observations of volcanic lightning during the 2010 eruption of Eyjafjallajökull, Iceland. Bulletin of Volcanology, 76(8), [828]. DOI: 10.1007/s00445-014-0828-4
Observations of volcanic lightning made using a lightning mapping array during the 2010 eruption of Eyjafjallajökull allow the trajectory and growth of the volcanic plume to be determined. The lightning observations are compared with predictions of an integral model of volcanic plumes that includes descriptions of the interaction with wind and the effects of moisture. We show that the trajector...
متن کاملThe thermal stability of Eyjafjallajökull ash versus turbine ingestion test sands
The 2010 eruption of Eyjafjallajökull (Iceland) and the 2011 eruptions of Grimsvötn (Iceland), Cordon Caulle (Chile) and Nabro (Ethiopia) have drastically heightened the level of awareness in the general population of how volcanic activity can affect everyday life by disrupting air travel. The ingestion of airborne volcanic matter into jet turbines may cause harm by (1) abrasion of engine parts...
متن کامل