Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
584845 | Journal of Hazardous Materials | 2007 | 6 Pages |
Abstract
The procedure allows the determination of lead with a 0.43 μg Lâ1 detection limit (3Ï/S) and precisions (expressed as relative standard deviation) of 4.84% (N = 7) and 2.9% (N = 7) for lead concentrations of 5 and 25 μg Lâ1, respectively. The accuracy was confirmed by the determination of lead in the NIST SRM 1643d trace elements in natural water standard reference material. The pre-concentration factor obtained is 26.5 and the sampling frequency is 48 hâ1. The recovery achieved for lead determination in the presence of several ions demonstrated that this procedure could be applied to the analysis of drinking water samples. The method was applied for lead determination in drinking water samples collected in Jequié City, Brazil. The lead concentration found in 25 samples were always lower than the permissible maximum levels stipulated by World Health Organization.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Health and Safety
Authors
Anderson S. Souza, Geovani C. Brandão, Walter N.L. dos Santos, Valfredo A. Lemos, Edgard M. Ganzarolli, Roy E. Bruns, Sérgio L.C. Ferreira,