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Effects of organic sulfur compounds on extraction and determination of inorganic sulfate

Title data

Alewell, Christine:
Effects of organic sulfur compounds on extraction and determination of inorganic sulfate.
In: Plant and Soil. Vol. 149 (February 1993) Issue 1 . - pp. 141-144.
ISSN 1573-5036
DOI: https://doi.org/10.1007/BF00010771

Abstract in another language

The common methods for determining inorganic soil sulfate may be affected by the extraction of sulfate from organic sulfur compounds such as ester sulfates. In order to test this, various synthetic organic sulfur compounds (ranging from ester sulfates to sulfonates and C-bonded sulfur) were extracted with deionized water or with two common sulfate extractors (0.5M NaHCO 3 and 0.02M NaH2PO4). Similar amounts of dissolved sulfate were detected in all extracts of the aromatic ester sulfate hydroxyquinoline sulfate. Sulfate was not released from aliphatic ester sulfates or C-bonded sulfur. Ion chromatography was compared to a turbidimetric method for the determination of sulfate. The latter method, based on BaSO4-precipitation , appeared to be unsuitable for determining sulfate inorganically influenced solutions. Barium precipitated sulfate as well as ester sulfates. Furthermore, the photometry of BaSO4 was influenced by specific absorption of dissolved organic compounds, leading toa misinterpretation of the sulfate concentration in the solution.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER6818
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 30 Oct 2015 07:19
Last Modified: 30 Oct 2015 07:19
URI: https://eref.uni-bayreuth.de/id/eprint/21039