USE OF A MEMBRANELESS EXTRACTION MODULE FOR THE VOLTAMMETRIC DETERMINATION OF TOTAL SULFITES IN WINE

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Luis Moreira Goncalves (Author) Other; Miriam Franco Da Anunciacao (Author) Other; Ines Maria Valente (Author) Other; Joao Grosso Pacheco (Author) Other; Jose Antonio Rodrigues (Author) FCUP; Aquiles Araujo Barros (Author) FCUP

Journal

Title: Collection of Czechoslovak Chemical Communications

Vol. 75 No. 7

Pages: 721-730

ISSN: 0010-0765

Publisher: Akademie Ved Ceske Republiky

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 9 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

CORDIS: Physical sciences > Chemistry > Applied chemistry ; Physical sciences > Chemistry > Instrumental analysis

Other information

Authenticus ID: P-003-AEJ

DOI: 10.1135/cccc2009558

Abstract (EN): A recently developed membraneless extraction module (MLEM) for sample preparation aiming the analysis of volatile and semi-volatile compounds is applied in the voltammetric analysis of total sulfites in wine. Square-wave voltammetry (SWV) is very advantageous in this case because sulfur dioxide (SO(2)) is instrumentally directly detected. The developed method shows good repeatability (RSD lower than 5%) and linearity (between 20 to 220 mg l(-1)) as well as suitable limits of detection (6 mg l(-1)) and quantification (19 mg l(-1)). The proposed method was also compared with the reference methodology (an iodimetry, the Ripper method) showing no significant differences in the obtained results.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10