Determination of imidacloprid in paddy water and soil by liquid chromatography electrospray ionization-tandem mass spectrometry
Thuyet, D. Q., Yamazaki, K., Phong, T. K., Watanabe, H., Nhung, D. T. T., & Takagi, K. (2010) Determination of imidacloprid in paddy water and soil by liquid chromatography electrospray ionization-tandem mass spectrometry. Journal of Analytical Chemistry, 65(8), pp. 843-847.
A method for the determination of imidacloprid in paddy water and soil was developed using liquid chromatography electrospray ionization-tandem mass spectrometry (LC/ESI-MS/MS). Separation of imidacloprid was carried out on a Shimadzu C18 column (150 mm × 4.6 mm, 4.6 μm) with an acetonitrile?water (50 : 50, v/v) mobile phase containing 0.1% of acetic acid. The flow rate was 0.3 mL/min in isocratic mode. The product ion at 209 m/z was selected for quantification in multiple-reaction monitoring scan mode. Imidacloprid residues in soil were extracted by a solid-liquid extraction method with acetonitrile. Water samples were filtered and directly injected for analysis without extraction. Detection limits of 0.5 μg/kg and 0.3 μg/L were achieved for soil and water samples, respectively. The method had recoveries of 90 ± 2% (n = 4) for soil samples and 100 ± 2% (n = 4) for water samples. A linear relationship was observed throughout the investigated range of concentrations (1-200 μg/L), with the correlation coefficients ranging from 0.999 to 1.000. © Pleiades Publishing, Ltd., 2010.
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|Item Type:||Journal Article|
|Additional Information:||Cited By (since 1996): 2
Export Date: 11 April 2013
|Divisions:||Current > Institutes > Institute of Health and Biomedical Innovation
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Deposited On:||14 Oct 2015 00:46|
|Last Modified:||26 Oct 2015 00:06|
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