Implementation of AAS methods for the quantification of Hg and hexavalent Cr in recycled paper used for food packaging

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Soares, ME (Author) Other; Carneiro, C (Author) Other; Bastos, ML (Author) FFUP

Journal

Title: Atomic Spectroscopy

Vol. 23

Pages: 148-153

ISSN: 0195-5373

Publisher: Perkin-Elmer Corp.

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-000-N24

Abstract (EN): Total mercury and hexavalent chromium were determined in recycled paper samples and cardboard packages intended to come in contact with food using atomic absorption spectrometry (AAS). For the determination of mercury, the samples were digested with a mixture of concentrated HNO3 and H2O2 and determined by cold vapor generation. Hexavalent chromium was extracted directly from the paper and cardboard with a solution of NaOH and determined by electrothermal atomization AAS. The detection limits were 0.38 and 0.50 mug/L for mercury and hexavalent chromium, respectively. The determinations were performed in the linear range of 0.38-10.0.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6