Novos sorventes baseados em Poli(Metiloctilsiloxano) sobre sílica para uso em extração em fase sólida.
This paper presents an easy and practical procedure to obtain silica-based C-8 type sorbents for use in solid-phase extraction. The materials are prepared by depositing poly(methyloctylsiloxane), PMOS, on the silica support. Two different treatments for immobilization were used: thermal treatment or gamma irradiation. Suitable recoveries were obtained after pre-concentration of dilute solutions, at the ng/L level, of a mixture of pesticides, indicating the good performance of the materials.
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Artigo de periódico biblioteca |
| Language: | pt_BR por |
| Published: |
2007-05-09
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| Subjects: | Extração em fase sólida, Técnica, Polímero, Sorvente, Irradiação gama, Procedimentos., Silica, Pesticida, Tratamento Térmico., |
| Online Access: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/15350 |
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| Summary: | This paper presents an easy and practical procedure to obtain silica-based C-8 type sorbents for use in solid-phase extraction. The materials are prepared by depositing poly(methyloctylsiloxane), PMOS, on the silica support. Two different treatments for immobilization were used: thermal treatment or gamma irradiation. Suitable recoveries were obtained after pre-concentration of dilute solutions, at the ng/L level, of a mixture of pesticides, indicating the good performance of the materials. |
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