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合成了磁性功能材料,氨基化的Fe3O4纳米粒子,以丙酮作溶剂对洛克沙胂、对氨基苯胂酸、对羟基苯胂酸、对硝基苯胂酸、对酰胺基苯胂酸进行吸附,石墨炉原子吸收光谱法进行检测。对合成的磁性材料进行了表征,并详细研究了其对苯胂酸的吸附性能。结果表明,合成的磁性材料对苯胂酸具有良好的选择性,5 min内便可吸附完全,吸附率接近100%。该方法在10～200 ng/mL范围内线性良好,检出限低于1 ng/mL,RSD均低于5.6%,将合成材料用于鸡饲料中5种苯胂酸的测定,加标回收率均在63%～104%之间。
Synthesis of a magnetic functional material, aminated Fe3O4 nanoparticles, acetone as a solvent on the adsorption of roxarsone, p-aminophenyl arsenic acid, p-hydroxyphenylarsonic acid, p-nitrophenyl arsonic acid, p- Graphite furnace atomic absorption spectrometry for detection. The synthesized magnetic materials were characterized, and their adsorption properties of phenyl arsonic acid were studied in detail. The results show that the synthesized magnetic material has good selectivity to phenyl arsonic acid and can be adsorbed completely within 5 min with the adsorption rate close to 100%. The method has a good linearity in the range of 10 ~ 200 ng / mL, the detection limit is lower than 1 ng / mL and the RSD is lower than 5.6%. The synthetic materials are used for the determination of five phenylarsonic acid in chicken feed, Rates are between 63% ~ 104%.