title: Micellar electrokinetic chromatographic determination of triazine herbicides in water samples.
abstract: Dispersive liquid-liquid microextraction combined with online sweeping preconcentration in micellar electrokinetic chromatography was developed for the simultaneous determination of five triazine herbicides (atrazine, simazine, propazine, prometon and simetryn) in water samples. Several experimental parameters affecting the extraction efficiencies such as the type and volume of both the extraction and dispersive solvents, the addition of salt to sample solution, the extraction time and the pH of the sample solution were investigated. Under optimum conditions, the linearity of the method was good in the range from 0.33 to 20 ng mL(-1) for simazine, propazine, atrazine and simetryn, and from 0.17 to 20 ng mL(-1) for prometon, respectively. The sensitivity enrichment factors were in the range from 1750 to 2100, depending on the compound. The limit of detection (S/N = 3) ranged from 0.05 to 0.10 ng mL(-1). The developed method was successfully applied to the analysis of the five triazines in river, ground and well waters.
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China.
authors: Zhi
authors: Z
authors: Li
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China.
authors: Shuaihua
authors: S
authors: Zhang
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China.
authors: Xiaofang
authors: X
authors: Yin
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China.
authors: Chun
authors: C
authors: Wang
authors: Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding, Hebei 071001, China zhiwang2000@hotmail.com wangzhi@hebau.edu.cn.
authors: Zhi
authors: Z
authors: Wang
mesh_terms: D001280:Atrazine / Q000032:analysis; D020374:Chromatography, Micellar Electrokinetic Capillary / Q000379:methods*; D006540:Herbicides / Q000032:analysis*; D015203:Reproducibility of Results; D012839:Simazine / Q000032:analysis; D014227:Triazines / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D006540:Herbicides; D014227:Triazines; D014874:Water Pollutants, Chemical; C033807:simetryn; D001280:Atrazine; D012839:Simazine; C100043:propazine