AIM To develop a new determination method of astrogaloside in anisic acid sulfuric acid system by spectrophotofluorimetry. METHODS Using 2% anisic acid anhydrous alcoholic solution as colour developing reagent in the ...AIM To develop a new determination method of astrogaloside in anisic acid sulfuric acid system by spectrophotofluorimetry. METHODS Using 2% anisic acid anhydrous alcoholic solution as colour developing reagent in the presence of sulfuric acid to determine astragaloside in pig serum. The reaction was allowed to procced on a 60℃ water bath for 20 min. RESULTS The reaction product of astrogaloside and anisic acid has excitation and emission maxima at 320 and 387 nm, respectively. The linear range of determination is from 0 2 to 40 μg·mL -1 . The detection limit is 0 02 μg·mL -1 . The recoveries of samples are between 98 65% and 102 4%. CONCLUSION The proposed method has advantages of high sensitivity, low detection limit and no interference. It has been used to determine several kinds of samples successfully.展开更多
建立高效液相色谱法测定化妆品中对羟基苯乙酮、对茴香酸和辛酰羟肟酸含量的分析方法。样品经体积分数为80%的甲醇溶液超声提取,以0.1%(体积分数)磷酸溶液-乙腈作为流动相进行梯度洗脱,采用Osaka Soda Capcell Pak MG C18色谱柱(250 mm&...建立高效液相色谱法测定化妆品中对羟基苯乙酮、对茴香酸和辛酰羟肟酸含量的分析方法。样品经体积分数为80%的甲醇溶液超声提取,以0.1%(体积分数)磷酸溶液-乙腈作为流动相进行梯度洗脱,采用Osaka Soda Capcell Pak MG C18色谱柱(250 mm×4.6 mm,5μm)进行分离,流量为1.0 mL/min,柱温为30℃,检测波长为210 nm,色谱峰面积外标法定量。对羟基苯乙酮、对茴香酸和辛酰羟肟酸的质量浓度在2.5~60 mg/L范围内与对应色谱峰面积线性关系良好,相关系数均不小于0.9998,方法检出限均不大于0.22 mg/L。低、中、高三个浓度水平的加标回收率为85.8%~111.1%,测定结果的相对标准偏差为0.5%~5.9%(n=6)。该方法操作简便,适用于化妆品中3种物质的测定。展开更多
文摘AIM To develop a new determination method of astrogaloside in anisic acid sulfuric acid system by spectrophotofluorimetry. METHODS Using 2% anisic acid anhydrous alcoholic solution as colour developing reagent in the presence of sulfuric acid to determine astragaloside in pig serum. The reaction was allowed to procced on a 60℃ water bath for 20 min. RESULTS The reaction product of astrogaloside and anisic acid has excitation and emission maxima at 320 and 387 nm, respectively. The linear range of determination is from 0 2 to 40 μg·mL -1 . The detection limit is 0 02 μg·mL -1 . The recoveries of samples are between 98 65% and 102 4%. CONCLUSION The proposed method has advantages of high sensitivity, low detection limit and no interference. It has been used to determine several kinds of samples successfully.
