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NBSˉ荧光素化学发光体系测定头孢吡肟和头孢克肟

Keywords: 化学发光,流动注射分析,盐酸头孢吡肟,头孢克肟

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Abstract:

在碱性条件下,头孢吡肟和头孢克肟能被NBS(Nˉ溴代琥珀酰亚胺)氧化,其能量可激发共存的荧光素而产生化学发光,发光强度与头孢吡肟和头孢克肟的浓度在一定范围内呈良好的线性关系,基于此,结合流动注射技术,建立了一种直接测定头孢吡肟和头孢克肟的化学发光新方法.该方法灵敏度高,重现性好.对头孢吡肟的检出限为5.7g/L(IUPAC),线性范围为0.01ˉ10mg/L,RSD为2.5%(5.0mg/L,n=11).对头孢克肟的检出限为0.048mg/L(IUPAC),线性范围为0.08ˉ5.0mg/L,RSD为2.

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