Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Matrix effects in the Ion Chromatography determination of bromate in drinking water |
| Abstract | Bromate is a well known by-product produced by the ozonation of drinking water; the allowed concentration for human 21 consumption has to be regulated to low mg l range. By using a high-capacity anion-exchange column, it should be possible to determine bromate at this low concentration by direct injection of a very large volume (up to 1 ml) without any sample preconcentration and pretreatment. The feasibility of this technique for the determination of bromate in drinking water has been explored in our work. The experimental results showed that matrix effect, due to inorganic ions contained in drinking water, strongly influenced the chromatographic behaviour of the bromate peak. The increase of the total ion content led to a correlated decrease in the efficiency of the analyte peak so that effective detection limits depended on the matrix composition. In this work chromatographic parameters (efficiency, asymmetry and resolution) of bromate peak are discussed in relation to the concentration of the main inorganic anions, and the injection volume (from 250 microl to 1 ml). |
| Source | Journal of chromatography (Print) 847, pp. 279–284 |
| Keywords | Water analysisMatrix effectsBromate |
| Journal | Journal of chromatography (Print) |
| Editor | Elsevier, Amsterdam, Paesi Bassi |
| Year | 1999 |
| Type | Articolo in rivista |
| Authors | Colombini S., Polesello S., Valsecchi S. (1), Cavalli S. (2) |
| Text | 235562 1999 Water analysis Matrix effects Bromate Matrix effects in the Ion Chromatography determination of bromate in drinking water Colombini S., Polesello S., Valsecchi S. 1 , Cavalli S. 2 1 IRSA CNR, Brugherio 2 , Dionex Italia, Pieve Emanuele Bromate is a well known by product produced by the ozonation of drinking water; the allowed concentration for human 21 consumption has to be regulated to low mg l range. By using a high capacity anion exchange column, it should be possible to determine bromate at this low concentration by direct injection of a very large volume up to 1 ml without any sample preconcentration and pretreatment. The feasibility of this technique for the determination of bromate in drinking water has been explored in our work. The experimental results showed that matrix effect, due to inorganic ions contained in drinking water, strongly influenced the chromatographic behaviour of the bromate peak. The increase of the total ion content led to a correlated decrease in the efficiency of the analyte peak so that effective detection limits depended on the matrix composition. In this work chromatographic parameters efficiency, asymmetry and resolution of bromate peak are discussed in relation to the concentration of the main inorganic anions, and the injection volume from 250 microl to 1 ml . 847 articolo 99ColombiniJhromBromate.pdf Articolo in rivista Elsevier 0021 9673 Journal of chromatography Print Journal of chromatography Print J. chromatogr. Print Journal of chromatography. Print Journal of chromatography. A Print stefano.polesello POLESELLO STEFANO saramaria.valsecchi VALSECCHI SARA MARIA |