| Autor: |
Dopico G MS; Lab. de Quimica, Dpto de Quimica Analitica, E.U. Politécnica, Centro de Investigacións Tecnolóxicas, Universidad de A Coruña, Campus de Esteiro, Avda 19 de Febrero, Ferrol 15405, Spain., González R MV, Castro R JM, González S E, Pérez I J, Rodrı́guez T M, Calleja A, Vilariño JM |
| Jazyk: |
angličtina |
| Zdroj: |
Talanta [Talanta] 2003 Mar 01; Vol. 59 (3), pp. 561-9. |
| DOI: |
10.1016/s0039-9140(02)00572-6 |
| Abstrakt: |
Triazine herbicides form a wide group of substances that belong among the most common agrochemicals applied for pre- and post-emergence weed control. So, they can be found in the environment at trace level. In order to determine their concentrations in water samples by the usual analytical techniques, a preconcentration step is commonly necessary. In this paper, a simple analytical method for the quantification of eight triazines (three chlorotriazines, four methylthiotriazines and one methoxytriazine) in water samples by solid phase extraction-reversed phase liquid chromatography (LC) has been developed. LC shows good analytical performance for simultaneous multiple triazine analysis (repeatability <2%, reproducibility <3%), except for prometon (repeatability 5.52%, reproducibility 16%). The results, obtained by using carbograph and polymeric sorbents for solid phase extraction (SPE), have been compared. The limits of quantification achieved permit the application of the proposed SPE-LC method for the determination of eight triazines in water samples (0.0065-0.028 mug l(-1)). |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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