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Lucigenin immobilized on silicon oxides as a solid-phase chemiluminescent reagent O. A. Zaporozhets, V. V. Sukhan and N. A. Lipkovska -------------------------------------------------------------------------------- The adsorption of an effective chemiluminescent reagent lucigenin(bis-N-methylacridinium nitrate) on different silica oxides was investigated. Adsorption of lucigenin from aqueous solutions onto non-functionalized silica gel and silpearl was found to be quick, quantitative and strong. These lucigenin-modified silicon oxide compounds were tested as potential solid-phase chemiluminescent reagents. It was found that this reagent function was stable for more then 200 analyses at a rate of 120 tests per hour. The solid-phase lucigenin reagent is irreversible but can be easily regenerated. It was applied to the flow determination of vanadium(IV) and iron(II) with detection limits of 0.7 and 0.8 µg l¨C1, which are ten times more sensitive than for a closed system. Analyst, 1996, 121, 501 - 503, DOI: 10.1039/AN9962100501 ÎÒÃÇѧУ99ÄêÒÔǰµÄAnalyst ¿´²»µ½È«ÎÄ,ÄÄλºÃÐÄÈË¿ÉÒÔ°ïÎÒ²é²é,ÔÚϲ»Ê¤¸Ð¼¤! |
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