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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | da Silva, Maria José Paim, Ana Paula S. Pimentel, Maria Fernanda Cervera, M. Luisa de la Guardia, Miguel |
| Description | Country affiliation: Spain Author Affiliation: da Silva MJ ( Department of Analytical Chemistry, Edificio de Investigación, University of Valencia, 50 Dr. Moliner Street, E-46100 Burjassot, Valencia, Spain.) |
| Abstract | A cold vapor atomic fluorescence spectrometry method (CV-AFS) has been developed for the determination of Hg in rice samples at a few ngg(-1) concentration level. The method is based on the previous digestion of samples in a microwave oven with HNO(3) and H(2)O(2) followed by dilution with water containing KBr/KBrO(3) and hydroxylamine and reduction with SnCl(2) in HCl using external calibration. The matrix interferences and the effect of nitrogen oxide vapors have been evaluated and the method validated using a certified reference material. The limit of detection of the method was 0.9ngg(-1) with a recovery percentage of 95+/-4% at an added concentration of 5ngg(-1). The concentration level of Hg found in 24 natural rice samples from different origin ranged between 1.3 and 7.8ngg(-1). |
| File Format | HTM / HTML |
| ISSN | 00032670 |
| Issue Number | 1-2 |
| Volume Number | 667 |
| e-ISSN | 18734324 |
| Journal | Analytica Chimica Acta |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-05-14 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Analytical Discipline Chemistry Gases Chemistry Mercury Analysis Microwaves Oryza Sativa Spectrometry, Fluorescence Methods Cold Temperature Hydrogen Peroxide Nitric Acid Tin Compounds Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Spectroscopy Environmental Chemistry Analytical Chemistry Biochemistry |
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