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Fluazinam Residue and Dissipation in Potato Tubers and Vines, and in Field Soil

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Abstract

Residual fluazinam in the environment may cause dermatitis and occupational asthma. Therefore, it is important to determine the dissipation behavior of fluazinam in edible raw food and in the environment. The aim of this study was to monitor a fungicide fluazinam on potato. A method for the analysis of fluazinam residue and its dissipation in potato plants and soil under field conditions was studied. Fluazinam residues were analyzed using a modified Quick, Easy, Cheap,Effective, Rugged, and Safe (QuEChERS) method and gas chromatography coupled with electron capture detector (GC-ECD). Mean recoveries and relative standard deviations (RSD) in potato plants, potatoes, and soil at three spiking levels were 85.1–99.5 and 0.7–2.8 %, respectively. The limits of quantification (LOQ) were 0.01 mg kg−1 for all three matrices. The dissipation dynamics of fluazinam were investigated in field trials in Hebei and Anhui provinces. In potato plants, fluazinam had a half-life of 2.5 days in Hebei and 3.6 days in Anhui. The half-life of fluazinam in soil was 4.7 days in Hebei and 13 days in Anhui. Terminal residues in soil samples ranged from 0.0925 to 0.949 mg · kg−1 and fluazinam was not detected in potato at pre-harvest intervals of five, seven, and 10 days. It was safe for fluazinam application on potato according to the recommended dosage and times.

Resumen

Fluazinam residual en el ambiente pudiera causar dermatitis y asma ocupacional. De aquíque es importante determinar el comportamiento de disipación de fluazinam en alimentoscrudos y en el ambiente. El propósito de este estudio fue monitorear un fungicida fluazinamen papa. Se estudió un método para el análisis de residuos de fluazinam y su disipación enplantas de papa y en suelo bajo condiciones de campo. Se analizaron los residuos defluazinam utilizando un método modificado rápido, fácil, barato, efectivo, robusto y seguro(QuEChERS) y cromatografía de gas acoplada con un detector de captura de electrones(GCECD). Las medias de las recuperaciones y las desviaciones estándar relativas (RSD) enplantas de papa, tubérculos y suelo a tres niveles de detección fueron de 85.1--99.5 y 0.7--2.8 % respectivamente. Los límites de cuantificación (LOQ) fueron 0.01 mg kg−1 para lastres matrices. Se investigaron las dinámicas de disipación de fluazinam en ensayos decampo en las provincias de Hebei y Anhui. En las plantas de papa fluazinam tuvo una vidamedia de 2.5 días en Hebei y de 3.6 días en Anhui. En el suelo la vida media del productofue de 4.7 días en Hebei y de 13 días en Anhui. Los residuos terminales en las muestras delsuelo fluctuaron de 0.0925 a 0.949 mg kg−1 y no se detectó fualzinam en tubérculos aintervalos de pre-cosecha de cinco, siete y diez días. Fue segura la aplicación de fluazinamen papa de acuerdo a la dosis y tiempos recomendados.

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Authors and Affiliations

  1. College of Science, China Agricultural University, Beijing, 100193, People’s Republic of China

    Xiaoxiao Feng, Kai Wang, Zhaobin Mu, Yuzhen Zhao & Hongyan Zhang

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  1. Xiaoxiao Feng
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  2. Kai Wang
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  3. Zhaobin Mu
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  4. Yuzhen Zhao
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  5. Hongyan Zhang
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Correspondence to Hongyan Zhang.

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Feng, X., Wang, K., Mu, Z. et al. Fluazinam Residue and Dissipation in Potato Tubers and Vines, and in Field Soil. Am. J. Potato Res. 92, 567–572 (2015). https://doi.org/10.1007/s12230-015-9469-1

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