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Details van artikel 14 van 34 gevonden artikelen
| Titel: |
Cloud point extraction combined with graphite furnace atomic absorption spectrometry for the determination of chromium species and their distribution in cigarette and cigarette ash |
| Auteur: |
Zhu, Xiashi Hu, Bin Jiang, Zucheng |
| Verschenen in: |
International journal of environmental analytical chemistry |
| Paginering: | Jaargang 84 (2004) nr. 12 pagina's 927-934 |
| Jaar: |
2004-10-15 |
| Inhoud: |
In this article, the contents and distribution of total chromium, Cr(III) and Cr(VI) in various cigarettes and cigarette ashes were determined by using a cloud point extraction (CPE) separation/preconcentration combined with graphite furnace atomic absorption spectrometric (GFAAS) detection. Different extraction reagents, such as tetramethylammonium hydroxide (TMAH), Na2HPO4, Na2CO3/NaOH, NaOH and H2O, were tested for the extraction of Cr species, and the extraction efficiency was estimated. The experimental results showed that TMAH was the most efficient extraction reagent for the analyte in cigarette samples. By using the established method, the total chromium, Cr(III) and Cr(VI) in various cigarettes and cigarette ashes were determined and their distribution was studied. It was found that Cr(III) is a main species in cigarettes, but that it can be partly oxidized to Cr(VI) during smoking. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 14 van 34 gevonden artikelen
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