AUTHOR=Wu Yalin , Bai Huahua , Zhou Qingxiang , Li Shuangying , Tong Yayang , Guo Jinghan , Zhou Boyao , Li Zhi , Zhan Yali , Liu Menghua , Li Yanhui , Qu Tongxu 

TITLE=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

JOURNAL=Frontiers in Chemistry

VOLUME=Volume 9 - 2021

YEAR=2021

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2021.708995

DOI=10.3389/fchem.2021.708995

ISSN=2296-2646

ABSTRACT=The health threat from Sudan red dyes has absorbed much more attention, and it 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 emerged very prominent adsorption capacity for Sudan dyes from natural waters. G1.5-MNPs possessed excellent adsorption capacity and a linear adsorption relationship over range from 0.02 to 300 μg 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 range from 1.8 to 5.5 ng L-1 and the precisions were less than 3.0%. G1.5-MNPs showed a remarkable application potential for 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.