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dc.contributor.authorZhu, CQ
dc.contributor.authorZhu, SJ(Anhui Normal Univ, Coll Chem & Mat Sci)
dc.contributor.authorZheng, H
dc.contributor.authorChen, JL
dc.contributor.authorLi, DH
dc.contributor.author李东辉
dc.contributor.authorLil, SH
dc.contributor.authorXu, JG
dc.date.accessioned2011-10-11T11:27:12Z
dc.date.available2011-10-11T11:27:12Z
dc.date.issued2005
dc.identifier.citationMicrochimica Acta ,Volume 148, Numbers 3-4, 251-257zh_CN
dc.identifier.issn1436-5073
dc.identifier.urihttp://dx.doi.org/doi:10.1007/s00604-004-0268-5
dc.identifier.urihttps://dspace.xmu.edu.cn/handle/2288/10893
dc.description.abstractA near-infrared (near-IR) fluorescence recovery method for the determination of nucleic acids is presented. This method employs a two-reagent system composed of anionic heptamethines cyanine (HMC) and polycationic poly-lysine. The fluorescence of HMC, with maximum excitation and emission wavelengths at 778 and 804 nm, respectively, was quenched by poly-lysine in proper concentration, but recovered by adding nucleic acids. Under optimal conditions, the recovered fluorescence was proportional to the concentration of nucleic acids. The calibration graphs are linear over the range of 5-300 ng mL(-1) for herring sperm DNA (FS DNA), 2-100 ng mL(-1) for calf thymus DNA (CT DNA) and 5-500 ng mL(-1) for snake ovum RNA (SO RNA). The corresponding detection limits are 1.49 ng mL(-1) for FS DNA, 0.7 ng mL(-1) for CT DNA and 1.61 ng mL(-1) for SO RNA, respectively. Four synthetic and three real nucleic acid samples were determined with satisfactory results.zh_CN
dc.language.isoenzh_CN
dc.publisherSPRINGER WIENzh_CN
dc.subjectnear-IR fluorescencezh_CN
dc.subjectcyaninezh_CN
dc.subjectpoly-lysinezh_CN
dc.subjectnucleic acidszh_CN
dc.titleDetermination of nucleic acids based on shifting the association equilibrium between a heptamethine cyanine dye and poly-lysinezh_CN
dc.typeArticlezh_CN


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