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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual Paulista Júlio de Mesquita Filho
2005
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| Online Access: | https://www.redalyc.org/articulo.oa?id=42930306 |
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| _version_ | 1866584872696414208 |
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| author | F. A. Silva |
| author_facet | F. A. Silva |
| contents | Determination of Hg in water by CVAAS using 2-aminothiazole modified silica F. A. Silva A. B. de Araújo I. L. de Alcântara P. S. Roldan C. C. F. Padilha J. P. S. Valente A. O. Florentino P. M. Padilha Química flow CVAAS mercury modified silica preconcentration This paper discusses a rapid and sensitive method developed to determine trace levels ofmercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentrationsystem composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT)coupled on-line with the spectrometers cold vapor generator system. The optimum preconcentrationconditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the columnto the spectrometers cold vapor generator system using 100 µL of 2 mol L-1 hydrochloric acid and theretention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L-1 of Hg. The detectionlimit calculated was 5 ng L-1. The preconcentration procedure was applied to determine trace levelmercury in spiked river water samples. 2005 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42930306 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.3 Vol.30 |
| format | Artículo científico |
| id | redalyc_42930306 |
| language | en |
| publishDate | 2005 |
| publisher | Universidade Estadual Paulista Júlio de Mesquita Filho |
| spellingShingle | Determination of Hg in water by CVAAS using 2-aminothiazole modified silica F. A. Silva Química flow CVAAS mercury modified silica preconcentration Determination of Hg in water by CVAAS using 2-aminothiazole modified silica F. A. Silva A. B. de Araújo I. L. de Alcântara P. S. Roldan C. C. F. Padilha J. P. S. Valente A. O. Florentino P. M. Padilha Química flow CVAAS mercury modified silica preconcentration This paper discusses a rapid and sensitive method developed to determine trace levels ofmercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentrationsystem composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT)coupled on-line with the spectrometers cold vapor generator system. The optimum preconcentrationconditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the columnto the spectrometers cold vapor generator system using 100 µL of 2 mol L-1 hydrochloric acid and theretention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L-1 of Hg. The detectionlimit calculated was 5 ng L-1. The preconcentration procedure was applied to determine trace levelmercury in spiked river water samples. 2005 artículo científico 0100-4670 https://www.redalyc.org/articulo.oa?id=42930306 en http://www.redalyc.org/revista.oa?id=429 Eclética Química application/pdf Universidade Estadual Paulista Júlio de Mesquita Filho Eclética Química (Brasil) Num.3 Vol.30 |
| title | Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
| topic | Química flow CVAAS mercury modified silica preconcentration |
| url | https://www.redalyc.org/articulo.oa?id=42930306 |