title: Sample Preparation for Arsenic, Copper, Iron, and Lead Determination in Sugar.
abstract: Two sample preparation methods were modified and optimized for the determination of As, Cu, Fe, and Pb in white sugar using atomic absorption spectrometry (AAS). Analyses were carried out using hydride generation AAS (HG-AAS) for As and flame AAS (FAAS) for Cu, Fe, and Pb. White sugar samples were prepared by dry ashing of the samples with H(2)SO(4) and Mg(NO(3))(2). Recoveries for As, Cu, Fe, and Pb were 87.6, 92.8, 95.8, 91.1% respectively,in ashing with H(2)SO(4). They were 95.1, 92.4, 97.4, and 91.1%, respectively, in ashing with Mg(NO(3))(2).6H(2)O. When small quantities of spikes were used, 94.7 and 95.3% recoveries of arsenic were found for the procedures applying H(2)SO(4) and Mg(NO(3))(2), respectively.
authors.affiliation: Analytical Department, Sugar Institute, 06790 Ankara, Turkey, and Department of Chemistry, Middle East Technical University, 06531 Ankara, Turkey.
authors.initials: J
authors.lastname: Leblebici
authors.initials: M
authors.lastname: Volkan