Comparison between two chromatographic methods to determine chlorothalonil in a commercial fungicide
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| Autores: | , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2019 |
| Descripción: | Introduction: Chlorothalonil can be determined by several analytical techniques, including gas chromatography (GC) and high performance liquid chromatography (HPLC). These two techniques are used often because they have a higher level of stability and sensitivity. Objective: To compare the efficacy of analytical methodologies by GC and by HPLC for the determination of chlorothalonil in a commercial fungicide. Methods: both the HPLC method and the GC method used by the laboratory were applied to equivalent samples and the results were compared with paired statistical tests. Results: both methods produced statistically equivalent and reliable results. These parameters were satisfactory: selectivity, range of work and linearity, limit of detection and quantification, repeatability, intermediate precision, robustness, veracity and bias; we consider them linear, precise and exact methods that meet the norms of the Costa Rican Accreditation Entity (ECA). Conclusions: both methods for determining chlorothalonil can be used reliably under the defined conditions. |
| País: | Portal de Revistas UNED |
| Institución: | Universidad Estatal a Distancia |
| Repositorio: | Portal de Revistas UNED |
| Lenguaje: | Español |
| OAI Identifier: | oai:revistas.investiga.uned.ac.cr:article/2627 |
| Acceso en línea: | https://revistas.uned.ac.cr/index.php/cuadernos/article/view/2627 |
| Palabra clave: | agrochemicals chlorothalonil pesticides analytical method validation agroquímicos clorotalonil plaguicidas método analítico validación |