| Autor: |
Dìez S, Querol X, Bayona JM, MONTUORI, PAOLO |
| Přispěvatelé: |
Dìez, S, Montuori, Paolo, Querol, X, Bayona, Jm |
| Jazyk: |
angličtina |
| Rok vydání: |
2007 |
| Předmět: |
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| Popis: |
A simple and rapid procedure for measuring total mercury in human hair was evaluated and compared with a conventional technique. An Advanced Mercury Analyzer (AMA-254) based on sample catalytic combustion, preconcentration by gold amalgamation, thermal desorption, and atomic absorption spectrometry (AAS) (Comb-AAS) was assessed for the direct determination of milligram quantities of human hair. Precision (% relative standard deviation) was < 7% and accuracy was determined by using two human hair reference materials (i.e., NIES No. 13 and IAEA-086) that were within the certified range. In comparison to conventional graphite-furnace atomic absorption spectrophotometry (GF-AAS), we found that our method obtained statistically equivalent results. Because total analysis time per sample was less than 10 min, the Comb-AAS method was in fact much faster than the GF-AAS method. In addition, Comb-AAS does not generate waste products and could be mainly useful for the analysis of a large amount of samples. Then, the authors suggest that this quick method could he useful for measuring mercury in human hair. Therefore, the mercury content in hair for a non-exposed group of children (n = 40) living in Spain was evaluated. The mean and median hair mercury levels for the subjects under study were found to be lower than the value of 1 µg/g, corresponding to the reference dose of 0.1 µg of methylmercury per kilogram body weight set by the U.S. Environmental Protection Agency. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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