Abstract
A new method for simultaneous determination of seven kinds of phenylurea herbicides (PUHs) in solid foodstuffs was established based on matrix solid phase dispersion (MSPD)–RP-LC. The procedure of MSPD is simple and not time-consuming. C18-bonded silica and anhydrous alumina were, respectively, used as dispersion sorbent and purificant, and dichloromethane as extraction reagent. Under the optimum conditions, seven kinds of herbicides were separated completely within 30 min, response was a linear function of concentration over the range 2.5–500 μg L−1 with good correlation coefficients (>0.99) and lower detection limits (0.25 and 0.5 μg L−1). Intra-day and inter-day precision of the peak areas for seven PUHs were less than 3.7 and 5.3%. The new method was used to detect seven PUHs in four kinds of solid foodstuffs with average recoveries range from 73.1 to 101%.
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Acknowledgments
This work was supported by the Testing Project Foundation of Zhejiang province science and technology department of China (2007F70051).
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Wang, Y., Cai, C., Xiao, L. et al. Determination of Phenylureas Herbicides in Foodstuffs Based on Matrix Solid-Phase Dispersion Extraction and RP-LC with UV Detection. Chromatographia 73, 403–406 (2011). https://doi.org/10.1007/s10337-010-1870-9
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DOI: https://doi.org/10.1007/s10337-010-1870-9