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共振散射光谱分析方法测定痕量庆大霉素

, PP. 118-121

Keywords: 氨基糖苷类抗生素,十二烷基苯磺酸钠,缔合物,共振散射

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Abstract:

在pH值为3.2ˉ6.2NaOAcˉHOAc缓冲介质中,十二烷基苯磺酸钠分别与硫酸庆大霉素(GEN)、硫酸妥布霉素(TOB)、硫酸卡那霉素(KANA)、硫酸新霉素(NEO)等氨基糖苷类抗生素相互作用形成缔合物,在320,340,420和470nm有4个散射峰.GEN,TOB,KANA和NEO的浓度分别在0.0720ˉ5.04,0.128ˉ7.04,0.240ˉ4.80,0.0760ˉ6.84mg/L与共振散射强度成正比,检出限分别为0.010,0.031,0.090,0.070mg/L.该法有好的选择性和灵敏度,用于市售庆大霉素注射液、片剂和胶囊的测定,结果比较满意.

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