QIU Su-yan,YU Xi-ren,DONG Yi-fan,et al.Solid-phase Extraction of Cu(Ⅱ),Zn(Ⅱ),Cr(Ⅲ),Cd(Ⅱ) and Pb(Ⅱ) Ions in Chicken Feed Based on Polyvinylpyrrolidone Functionalized Magnetic Graphene Oxide[J].Journal of Instrumental Analysis,2022,41(02):242-248.
QIU Su-yan,YU Xi-ren,DONG Yi-fan,et al.Solid-phase Extraction of Cu(Ⅱ),Zn(Ⅱ),Cr(Ⅲ),Cd(Ⅱ) and Pb(Ⅱ) Ions in Chicken Feed Based on Polyvinylpyrrolidone Functionalized Magnetic Graphene Oxide[J].Journal of Instrumental Analysis,2022,41(02):242-248. DOI: 10.19969/j.fxcsxb.21050603.
Solid-phase Extraction of Cu(Ⅱ),Zn(Ⅱ),Cr(Ⅲ),Cd(Ⅱ) and Pb(Ⅱ) Ions in Chicken Feed Based on Polyvinylpyrrolidone Functionalized Magnetic Graphene Oxide
The polyvinylpyrrolidone functionalized magnetic graphene oxide(polyvinylpyrrolidone/Fe,3,O,4,/graphene oxide,PVP/Fe,3,O,4,/GO)composites were prepared in this paper.The results of transmission electron microscopy and infrared spectroscopy showed that there were a lot of binding sites on the surface of the composites,which could greatly improve the extraction efficiency.The PVP/Fe,3,O,4,/GO composites exhibited a strong adsorption ability towards Cu(Ⅱ),Zn(Ⅱ),Cr(Ⅲ)and Cd(Ⅱ)ions,especially for Pb(Ⅱ)ions.The maximum adsorption capacities were 68.03,103.63,13.82,36.51 and 555.56 mg/g,respectively.The adsorption and desorption process only took 20 min. In the extraction experiment,the concentrations of Cu(Ⅱ),Zn(Ⅱ),Cr(Ⅲ),Cd(Ⅱ) and Pb(Ⅱ) ions were detected by flame atomic absorption spectrometry.It was found that the limits of detection ranged from 0.021 to 3.46 μg/L,which were comparable to those reported in previous literatures.Furthermore,the other coexisting metal ions showed no significant interference to the proposed method.Besides,the proposed method was successfully used for the rapid extraction of 5 metal ions in three kinds of chicken feed samples.The recoveries were in the range of 80.0%-120%,and the results showed a good consistency with those of microwave digestion method.The relative errors were in the range of -18.73%-7.50%.Therefore,the proposed method displayed a high application potential in the extraction of heavy metal ions in feed due to its superiorities,such as high extraction rate,timesaving,easy separation,low acid consumtion and environment-friendly.
关键词
磁性固相萃取聚乙烯吡咯烷酮功能化磁性氧化石墨烯重金属离子鸡饲料
Keywords
magnetic solid phase extractionpolyvinylpyrrolidone functionalized magnetic graphene oxidesheavy metal ionschicken feed
references
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