Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
EFFECTS OF ORGANIC SULFUR-COMPOUNDS ON EXTRACTION AND DETERMINATION OF INORGANIC SULFATE
Autore:
ALEWELL C;
Indirizzi:
UNIV BAYREUTH,BAYREUTH INST TERR ECOSYST RES,DEPT SOIL ECOL,POB 101251 W-8580 BAYREUTH GERMANY
Titolo Testata:
Plant and soil
fascicolo: 1, volume: 149, anno: 1993,
pagine: 141 - 144
SICI:
0032-079X(1993)149:1<141:EOOSOE>2.0.ZU;2-W
Fonte:
ISI
Lingua:
ENG
Soggetto:
FOREST SOIL;
Keywords:
C-BONDED-S; ESTER SULFATE; INORGANIC SULFATE; ORGANIC-S;
Tipo documento:
Article
Natura:
Periodico
Citazioni:
13
Recensione:
Indirizzi per estratti:
Citazione:
C. Alewell, "EFFECTS OF ORGANIC SULFUR-COMPOUNDS ON EXTRACTION AND DETERMINATION OF INORGANIC SULFATE", Plant and soil, 149(1), 1993, pp. 141-144

Abstract

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 sulfateextractors (0.5 M NaHCO3 and 0.02 M 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 in organically 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 to a misinterpretation of the sulfate concentration in the solution.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 07/08/20 alle ore 21:13:20