Spectrometric determination of silicon in food and biological samples: an interlaboratory trial

• Type: Article in International Scientific Journal
• Date: 2000

Authors

Van Dyck, K (Author) Other; Robberecht, H (Author) Other; Van Cauwenbergh, R (Author) Other; Deelstra, H (Author) Other; Arnaud, J (Author) Other; Willemyns, L (Author) Other; Benijts, F (Author) Other; Centeno, JA (Author) Other; Taylor, H (Author) Other; Soares, ME (Author) Other; Bastos, ML (Author) FFUP; Ferreira, MA (Author) Other; D'Haese, PC (Author) Other; Lamberts, LV (Author) Other; Hoenig, M (Author) Other; Knapp, G (Author) Other; Lugowski, SJ (Author) Other; Moens, L (Author) Other; Riondato, J (Author) Other; Van Grieken, R (Author) Other; Claes, M (Author) Other; Verheyen, R (Author) Other; Clement, L (Author) Other; Uytterhoeven, M (Author) Other

Journal

Title: Journal of Analytical Atomic Spectrometry

Vol. 15

Pages: 735-741

ISSN: 0267-9477

Publisher: Royal Society of Chemistry

Indexing

ISI Web of Knowledge - 29 Citations

Scopus - 20 Citations

Scientific classification

FOS: Natural sciences > Chemical sciences

Other information

Authenticus ID: P-001-1QK

DOI: 10.1039/b000572j

Abstract (EN): Accuracy and precision of silicon determination in biological matrices (serum, urine, water, beer and spinach) by spectrometric techniques (when necessary after acid destruction) were assessed by means of a collaborative interlaboratory trial. The trial was set up in accordance with ISO 5725-2 (1994). The relative overall repeatability standard deviation was acceptable. It varied between 4% for spinach powder (mean content: 176 mg kg(-1)) and 11% for serum (mean content: 5.33 mg L-1). On the other hand, the relative overall between-laboratory standard deviation was found to vary from a satisfactorily 15% for spinach after destruction (mean content: 3.32 mg L-1) to an unacceptable 107% for spinach powder (mean content: 176 mg kg(-1)). The overall conclusion of the trial was that silicon determination in biological matrices can properly be performed by spectrometric techniques. However, when sample pretreatment (i.e., acid destruction) is needed prior to silicon determination problems still remain.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7