| Autor: |
Lopes NP; LABCROM-Laboratório de Pesquisas em Cromatografia Líquida, Instituto de Química, Universidade Estadual de Campinas, Caixa Postal 6154, CEP 13084-971, Campinas, SP, Brazil., Collins KE, Jardim IC |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of chromatography. A [J Chromatogr A] 2003 Feb 14; Vol. 987 (1-2), pp. 77-85. |
| DOI: |
10.1016/s0021-9673(02)01658-8 |
| Abstrakt: |
Polybutadiene (PBD) has been immobilized on HPLC silica by gamma radiation doses in the range from 5 to 180 kGy. Columns prepared from these reversed-phase materials, as well as from similar non-irradiated materials, were tested with standard sample mixtures and characterized by elemental analysis (% C) and infrared spectroscopy. A low dose of 5 kGy is sufficient to produce a layer of immobilized PBD which functions as an efficient and stable stationary phase. Higher doses give thicker immobilized layers having less favorable chromatographic properties. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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