Mercury volatilization from a floodplain soil during a simulated flooding event
| Autor: | Alfred V. Hirner, Jörg Hippler, Iris Hindersmann, Tim Mansfeldt |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Hydrology
Topsoil geography geography.geographical_feature_category Volatilisation Floodplain Stratigraphy Chemie chemistry.chemical_element Contamination Dewatering Mercury (element) chemistry Environmental chemistry Environmental science Inductively coupled plasma mass spectrometry Water content Earth-Surface Processes |
| Zdroj: | Journal of Soils and Sediments. 14:1549-1558 |
| ISSN: | 1614-7480 1439-0108 |
| DOI: | 10.1007/s11368-014-0908-2 |
| Popis: | Middle-European floodplain soils are often contaminated with mercury (Hg) and periodically flooded. In this study, the influence of a flooding event and subsequent dewatering on the volatilization of elemental Hg and methylated species was investigated in a laboratory experiment. Undisturbed soil cores were taken from a topsoil (12.1 ± 0.75 mg kg−1 Hg) at the Elbe River in Lower Saxony, Germany. Soil columns were incubated at 20 °C with varying soil moisture (water-saturated for 2 weeks, 95 and 90 % water content for 1 week each), and the redox potential (EH) was recorded. The gaseous Hg that accumulated in the headspace of the flux chamber of the columns was pumped over cooled traps filled with adsorber material and analyzed by gas chromatography/inductively coupled plasma mass spectrometry for the various Hg species. The watering of the soil resulted in a rapid decrease in the EH and the achievement of strongly reducing conditions (EH |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink