Huang, J-H; Ilgen, G; Matzner, E: Simultaneous extraction of organotin, orgnaolead and organomercury species from soils and litter, Analytica Chimica Acta, 493, 23-34 (2003)
Abstract:
Extracting organotin compounds (OTC) from soils is difficult due to the high cation exchange and complexation capacity of soils, and little information about OTC in soils is available. In this study, a new extraction method, combining 1 M CaCl2, 0.1% tropolone, and glacial acetic acid was developed. Recoveries of mono-substituted OTC from spiked plant litter, and soil samples were improved substantially to 40% compared to classical glacial acetic acid extraction commonly used in sedimentology, yielding <10% recovery in C-rich soil samples. Simultaneously, the recovery of other OTC, trimethyllead and monomethylmercury was satisfactory. The recoveries of most species from the spiked litter, upland and wetland soils exceeded 70%. The new method extracted much more organometallics from unspiked organic soils and litter than microwave- and ultrasound-assisted extraction and accelerated solvent extraction, most likely due to exchange of organometallics from the solid phase by Ca2+. The method is simple, highly efficient and with low contamination. Together with GC–ICP–mass spectrometry, the method allows the detection of these organometallics in the pg g-1 range and it is particularly suitable for soil and plant materials with low organometallics contents. Author Keywords: Organotin; Organolead; Organomercury; Soil extraction method; Organic soil; Mineral soil; Litter
Upcoming ...
Ecological-Botanical Garden:
Su. 2020-04-05 now
Entfällt: 3x3=9: Wildkräuter für die Gründonnerstagssuppe
Fr. 2020-04-17
Entfällt: Mit tausend Schritten durch die Erdgeschichte: Gesteine im ÖBG
Su. 2020-04-19
Entfällt: Der ÖBG zum Kennenlernen: Allgemeine Gartenführung
Su. 2020-04-26
Von Sängern und Spöttern: Vogelstimmen im ÖBG (zusammen mit dem LBV)
Su. 2020-05-03
Klimawandel: Neue Bäume für die Stadt
BayCEER Blog
13.01.2020
Why Science Communication?
24.05.2019
Stoichiometric controls of C and N cycling
07.05.2019
Flying halfway across the globe to dig in the dirt – a research stay in Bloomington, USA
07.05.2019
EGU – interesting research and free coffee
RSS Blog as RSS Feed
Weather research site
Luftdruck (356m): 982.9 hPa
Lufttemperatur: 10.0 °C
Niederschlag: 0.0 mm/24h
Sonnenschein: <1 h/d
Wind (Höhe 17m): 13.8 km/h
Wind (Max.): 31.3 km/h
Windrichtung: SO

...more
Globalstrahlung: 430 W/m²
Lufttemperatur: 5.5 °C
Niederschlag: 0.1 mm/24h
Sonnenschein: 1 h/d
Wind (Höhe 32m): 15.1 km/h

...more
This site makes use of cookies More information