Citation: ZHANG Guijiang, ZANG Xiaohuan, ZHOU Xin, WANG Lu, WANG Chun, WANG Zhi. Extraction of triazine herbicides from environmental water samples with magnetic graphene nanoparticles as the adsorbent followed by determination using gas chromatography-mass spectrometry[J]. Chinese Journal of Chromatography, ;2013, 31(11): 1071-1075. doi: 10.3724/SP.J.1123.2013.05048 shu

Extraction of triazine herbicides from environmental water samples with magnetic graphene nanoparticles as the adsorbent followed by determination using gas chromatography-mass spectrometry

1.
Department of Chemistry, College of Science, Agricultural University of Hebei, Baoding 071001, China

Corresponding author: WANG Zhi,
Received Date: 27 May 2013
Available Online: 10 July 2013
Fund Project: 国家自然科学基金项目(31171698) (31171698)河北省科技支撑计划项目(12396908D). (12396908D)

A novel method was developed for the determination of seven triazine herbicides in environmental water samples by magnetic solid-phase extraction with graphene-based magnetic nanoparticles (G-Fe₃O₄ MNPs) as the adsorbent coupled with gas chromatography-mass spectrometry detection. The main factors influencing the extraction efficiency including the amount of G-Fe₃O₄, the extraction time, the pH and the ionic strength of sample solution and the desorption conditions were optimized. Under the optimized experimental conditions, the enrichment factors of the method for the analytes were in the range from 574 to 968; the linearities of the method ranged from 0.01 to 10.0 μg/L for simazine, propazine, metribuzin, simetryn and cyanazine, from 0.05 to 10.0 μg/L for atrazine and from 0.01 to 8.0 μg/L for prometryn, with the correlation coefficients (r) ranging from 0.9968 to 0.9998. The limits of detection were in the range between 1.0 and 5.0 ng/L. Good reproducibilities were obtained with the relative standard deviations below 10.5%. The developed method was applied to the analysis of the triazine herbicides in different water samples (lake, well and tap). The recoveries of the method were in the range from 79.8% to 118.3% at the spiked levels of 0.5 μg/L and 2.0 μg/L. The results indicated that the developed method can be used as a simple and efficient technique for the determination of the triazine herbicides in environmental water samples.
- graphene-based magnetic nanoparticles,
- magnetic solid-phase extraction,
- gas chromatography-mass spectrometry (GC-MS),
- triazine herbicides,
- water
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沈阳化工大学材料科学与工程学院沈阳 110142