超高效液相色谱-三重四级杆串联质谱法测定化妆品中达克罗宁和新康唑

利用超高效液相色谱-三重四级杆串联质谱技术,建立化妆品中达克罗宁和新康唑非法添加物定性定量检测方法。样品经饱和氯化钠溶液分散,乙腈提取,超声波冰浴30 min助提。采用C18柱色谱柱(100 mm×2.1 mm,1.9μm),用流动相A(0.1%甲酸水)和流动相B(甲醇)进行梯度洗脱,流量为0.3 mL/min,柱温为30℃,进样体积为2μL。达克罗宁和新康唑的质量浓度在1~100 ng/mL范围内与色谱峰面积线性关系良好,相关系数均大于0.999。当取样质量为0.2 g时,质量分数定量限均为0.1μg/g,检出限均为0.03μg/g。该方法灵敏、快速,可用于化妆品中达克罗宁和新康唑两种目标物的测定。

HPLC法同时测定儿童化妆品中达克罗宁与新康唑的含量

目的:建立儿童化妆品中达克罗宁与新康唑含量测定的高效液相色谱方法。方法:采用C18柱色谱柱(250 mm×4.6 mm,5μm)或等效色谱柱;流动相A为0.02 moL·L^(-1)磷酸二氢钠水溶液(H3PO4调pH值至3.0),流动相B为甲醇,行梯度洗脱;流速:1.0 mL·min^(-1);检测波长:280、202 nm;柱温:30℃;进样量:10μL。结果:达克罗宁和新康唑在1~100μg·mL^(-1)范围内线性关系良好,提取效果、特异性、耐用性、准确度、精密度均符合要求。结论:该方法可同时测定儿童化妆品中达克罗宁和新康唑的含量,为违禁成分的检测提供参考。

Synthesis of a New Series of Chalcone Derivatives and Their Antifungal Activities

To study the antifungal effect of chalcone derivatives. Methods Sixteenchalcone derivatives were synthesized and confirmed by ~1H NMR and IR spectra, and tested forantifungal activity against four common pathogenic fungi. Their structure-activity relationship isdiscussed. Results Among 16 title compounds, there were 5 new compounds, which have not beenreported before. The preliminary antifungal test showed that all title compounds exhibitedantifungal activities to a certain extent. The activity of compound 8 against Trichophyton rubrumhad a potency equal to that of fluconazole, with a MIC of 4 μg·mL^(-1) . Conclusion Sixteenchalcones were prepared and their antifungal activities against four common pathogenic fungi invitro were examined. Some of them exhibited antifungal activities to a certain extent.