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胶束电动毛细管色谱法分离左旋十八甲基炔诺酮、睾酮和孕酮 总被引:4,自引:0,他引:4
胶束电动毛细管色谱法(MECC)被用于左施十八甲基炔诺酮(LNC)、睾酮(T)和孕酮(P)的分离。电泳缓冲液中含一定量的乙腈或甲醇等有机添加剂时,可以改善分离。当乙睛体积分数为0~15%时,样品的迁移时间tm随着乙腈体积分数的增加而增加,但当已腈体积分数大于15%时,样品的tm随乙腈体积分数的增加反而减少。如采用20mmol/L的2,6-二甲基-β-环糊精(DM-β-CD)作添加剂,不仅可提高分高度,而且能缩短分析时间,实现最佳分离。 相似文献
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he block copelymer of 6-- methyl-- morpholinedione and caprolactone have been synthesized based on the stepwise addition of 6 -- methyl -- morpholinedione to the hydroxyl end group of prepolymers using stannous octoate as a catalyst. Themolecular weight of pre-polymer of caprolactone was determined by the molar ratio of caprolactone and 1, 4-butanediol. The block structure was confirmed andcharacterized by means of 1H-- NMR, 13C-- NMR, IR, and GPC. The thermal analysis were also reported and compared with the random copolymers. 相似文献
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