Abstract
Acetonitrile inorganic salt aqueous two-phase extraction method was established for the determination of triazine herbicides (simeton, cyanazine, desmetryn, terbumeton, terbuthylazine and dimethametryn) in environmental water samples by high-performance liquid chromatography (HPLC). The extraction solvents types and volume of acetonitrile, the inorganic salt types and amount of (NH4)2SO4, extraction time and pH of sample solution were optimized by single-factor experiment and central composite design. Under the optimum extraction conditions, all linear ranges were obtained with coefficients of determination (r) ≥ 0.9993. The limits of detection for this proposed method were in the range of 0.16–0.28 μg/L for six triazine herbicides. The developed method has been successfully applied to the analysis of target triazine herbicides from lake, canal and moat in real-world water samples. The recoveries of target analytes were in the range from 87.0 to 110.9% and the relative standard deviation was lower than 7.3%.
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Acknowledgements
This work was supported by the major project of Natural Science Foundation of Jiangsu Higher Education Institutions of China (no: 15KJA610003), Natural Science Foundation of Jiangsu Province (no. BK20160359) and Natural Science and Technology Program on Water Pollution Control and Treatment (2017ZX07205-2). The authors also acknowledge support from the Preponderant Discipline Construction Project in higher education of Jiangsu Province, China and Jiangsu High Education Collaborative Innovation Center of Water Treatment Technology and Material.
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Gao, S., Wu, G., Li, X. et al. Determination of Triazine Herbicides in Environmental Water Samples by Acetonitrile Inorganic Salt Aqueous Two-Phase Microextraction System. J. Anal. Test. 2, 322–331 (2018). https://doi.org/10.1007/s41664-018-0073-5
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DOI: https://doi.org/10.1007/s41664-018-0073-5