Chromatographia

, Volume 65, Issue 1–2, pp 25–30 | Cite as

Simultaneous Determination of Cyanazine, Chlorotoluron and Chlorbenzuron in Environmental Water Samples with SPE Multiwalled Carbon Nanotubes and LC

Original
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Abstract

In this paper, a new method based on solid-phase extraction with multiwalled carbon nanotubes as the packed materials for sensitive determination of cyanazine, chlorotoluron and chlorbenzuron in environmental water samples was demonstrated. Related parameters that may influence the enrichment efficiency of multiwalled carbon nanotubes such as the kind and volume of elute, sample flow rate, sample pH, and volume of the water samples were investigated. Under the optimum conditions, the detection limits of cyanazine, chlorbenzuron and chlorotoluron were 0.015, 0.012, 0.034 ng mL−1, respectively. The experimental results indicated a good linearity (R 2 > 0.9947) over the concentration range of 0.4–40 ng mL−1 for cyanazine and chlorotoluron, and 0.8–80 ng mL−1 for chlorbenzuron. The relative standard deviations of the three analytes were 3.54, 1.55 and 1.38%, respectively. The established method also was applied to the analysis of the real-world water samples and excellent achievements were obtained with average spiked recoveries from 87.8 to 110.1%. All the results indicated that this procedure could allow the simultaneous determination of these three compounds in environmental water samples at trace levels.

Keywords

Column liquid chromatography Solid-phase extraction Multiwalled carbon nanotubes Cyanazine, chlorotoluron and chlorbenzuron 
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Notes

Acknowledgement

This work was supported by the Youth Science Foundation of Henan Normal University (2004005), the Natural Science Foundation of Henan Province (0511053000), the Personal Innovation Foundation of Universities in Henan Province ([2005]126) and the grants from the Henan Key Laboratory for environmental pollution control.

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Copyright information

© Friedr. Vieweg & Sohn Verlag/GWV Fachverlage GmbH 2006

Authors and Affiliations

  1. 1.School of Chemistry and Environmental Sciences, Henan Key Laboratory for Environmental Pollution ControlHenan Normal UniversityXinxiangPeople’s Republic of China
  2. 2.Department of ChemistryUniversity of Science and Technology BeijingBeijingPeople’s Republic of China

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