应用质量源于设计理念建立一种高效液相色谱-荧光检测法(HPLC-FLD)用于测定大鼠血浆中5种大黄蒽醌.用Plackett-Burman设计考察流动相中甲醇含量、pH值、流速、柱温和进样体积对色谱峰的分离度、理论塔板数、最末洗脱峰的保留时间和拖尾因子的影响,结果显示流动相中甲醇含量、流速和柱温对色谱系统的影响显著(p<0.05).继而采用Box-Behnken设计结合响应面法考察上述三因素对分离度、保留时间和理论塔板数的影响.用Derringer渴求函数评价了响应值的综合作用.得出最优色谱条件为:以甲醇-0.1%(v/v)磷酸水溶液(81.4∶18.6,v/v)为流动相等度洗脱,流速1.1 mL/min,柱温31℃,荧光检测激发波长为440 nm,发射波长为540 nm.建立的模型显示良好的预测性.结果表明:质量源于设计的理念可有效地应用于优化高效液相色谱分析方法.
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