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RISS 인기검색어
- 검색키워드
- 저자 : Lingsong Lu (검색결과 2 건)
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- 유료
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Lu, Lingsong,Liu, Bei,Liu, Chenggui,Xie, Guoming Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
A label-free amperometric immunosensor has been proposed for the detection of myeloperoxidase (MPO) in human serum. To fabricate such an immunosensor, a composite film consisting of N,N-dimethylformamide (DMF), multiwall carbon nanotubes (MWCNTs) and 1-ethyl-3-methyl imidazolium tetrafluoroborate ($EMIMBF_4$) suspension was initially formed on a glassy carbon electrode (GCE). Then cerium dioxide ($CeO_2$) dispersed by chitosan was coated on the GCE. After that, MPO antibodies (anti-MPO) were attached onto the nano$CeO_2$ surface. With a noncompetitive immunoassay format, the antibody-antigen complex formed between the immobilized anti-MPO and MPO in sample solution. The immunosensor was characterized by cyclic voltammetry, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The factors influencing the performance of the immunosensor were studied in detail. Under optimal conditions, the current change before and after the immunoreaction was proportional to MPO concentration in the range of 5 to $300\;ng\;mL^{-1}$ with a detection limit of $0.2\;ng\;mL^{-1}$.
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Lingsong Lu,Bei Liu,Chenggui Liu,Guoming Xie 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
A label-free amperometric immunosensor has been proposed for the detection of myeloperoxidase (MPO) in human serum. To fabricate such an immunosensor, a composite film consisting of N,N-dimethylformamide (DMF), multiwall carbon nanotubes (MWCNTs) and 1-ethyl-3-methyl imidazolium tetrafluoroborate (EMIMBF4) suspension was initially formed on a glassy carbon electrode (GCE). Then cerium dioxide (CeO2) dispersed by chitosan was coated on the GCE. After that, MPO antibodies (anti-MPO) were attached onto the nanoCeO2 surface. With a noncompetitive immunoassay format, the antibody-antigen complex formed between the immobilized anti-MPO and MPO in sample solution. The immunosensor was characterized by cyclic voltammetry, transmission electron microscopy (TEM) and scanning electron microscopy (SEM). The factors influencing the performance of the immunosensor were studied in detail. Under optimal conditions, the current change before and after the immunoreaction was proportional to MPO concentration in the range of 5 to 300 ng mL‒1 with a detection limit of 0.2 ng mL‒1.
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