4.6 Article

Preparation of Polyamidoamine Dendrimer Modified Magnetic Nanoparticles and Its Application for Reliable Measurement of Sudan Red Contaminants in Natural Waters at Parts-Per-Billion Levels

期刊

FRONTIERS IN CHEMISTRY
卷 9, 期 -, 页码 -

出版社

FRONTIERS MEDIA SA
DOI: 10.3389/fchem.2021.708995

关键词

Sudan red dyes; magnetic solid phase extraction (MPSE); PAMAM dendrimer; PAMAM dendrimer-modified magnetic nanoparticles; high performance liquid phase chromatography

资金

  1. National Natural Science Foundation of China [21677177]
  2. Science Foundation of China University of Petroleum, Beijing [2462020XKJS04]

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A new magnetic nanomaterial with good adsorption capacity for Sudan dyes was synthesized in this study. It showed excellent sensitivity and precision, making it suitable for enrichment of trace environment pollutants in aqueous samples. The method based on this nanomaterial could be a robust and reliable alternative tool for routine monitoring of such pollutants.
The health threat from Sudan red dyes has been the subject of much attention in recent years and is crucial to design and establish reliable measurement technologies. In the present study, a new magnetic nanomaterial, polyamidoamine dendrimer-modified magnetic nanoparticles (Gn-MNPs), was synthesized and characterized. The nanomaterials had good adsorption capacity for Sudan dyes from natural waters. G1.5-MNPs possessed excellent adsorption capacity and a linear adsorption relationship over the range from 0.02 to 300 mu g L-1 of Sudan dyes with relative coefficients all larger than 0.996. The sensitivity of the proposed method was excellent with detection limits over the range from 1.8 to 5.5 ng L-1 and the precision was less than 3.0%. G1.5-MNPs showed a remarkable application potential for the enrichment of trace environment pollutants in aqueous samples and the developed method based on this nanomaterial could be a robust and reliable alternative tool for routine monitoring of such pollutants.

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