【Abstract】 Objective To establish a method for determination of the contents of Geniposide in Qingre Anchuang Pills.Methods By high performance liquid chromatography (HPLC),the acetonitrile-eater (11∶89) was used for the mobile phase with a flow rate of 1.0 mL/min,the Diamonsil C18 column (250 mm×4.6 mm×5 m) was used for separation,and the detection wavelength was set at 238 nm.Results The linear range of Geniposide was 9.08～105.8 g,and its recovery rate was 100.19%.Conclusion The method of HPLC is simple ... 更多还原 【关键词】 清热暗疮丸； 栀子苷； 高效液相色谱法； 【Key words】 Qingre Anchuang Pills； Geniposide； High performance liquid chromatography；
【Abstract】 To improve the RP-HPLC method for the analysis of the related substance of hydrocortisone butyrate in 2005 Chinese Pharmacopoeia.By optimization of its ultraviolet spectrograph and chromatographic column,the final adopted condition was Diamonsil C18(5 μm,250 mm×4.6 mm) column with KH2PO4(adjusting pH to 3.5 by H3PO4)-MeOH-THF(20︰65︰15) as mobile phase and 314 nm for detecting wavelength,and the theoretical plate number over 2000,which was superior to the standard method. 更多还原 【关键词】 丁酸氢化可的松； 有关物质； 反相高效液相色谱法； 改进； 【Key words】 Hydrocortisone butyrate； Related substance； RP-HPLC； Improvement；
【Author】 ZHAO Lian-zhong1,YAO Dan-dan1,GE Yu-song1,LUO Hai-yan21 Yancheng Institute for Drug Control,Yancheng Jiangsu 224002;2 Nanjing University of Traditional chinese Medicine;Nanjing Jiangsu 210029,China
【Abstract】 Objective:To develop a method for the determination of active compounds of Panax notoginseng and Panax ginseng in Kangerxin capsules.Methods: The diamonsil C18 column(250 mm×4.6 mm,5 μm)was used with acetonitrile as the mobile phase A and water as the mobile phase B.The linear grade is 0～9.5min,A27%;9.5～15 min,A 27%～45%;15～22 min,A45%;22～23min,A45%～27%;23～30 min,A 27%.The flow rate was 1.0 mL·min-1.The temperature of column is 35℃.Results: The linear ranges of ginsenoside Rg1,Rb1,notoginsenoside... 更多还原 【关键词】 康尔心胶囊； 人参皂苷Rg1； 人参皂苷Rb1； 三七皂苷R1； 含量测定； 【Key words】 Kangerxin capsule； Ginsenoside Rg1； Ginsenoside Rb1； Notoginsenoside R1； Determination；
129.10 吡蚜酮在水稻中的残留动态及其光降解的研究 【作者中文名】 李红杰; 【导师】 逯忠斌; 【学位授予单位】 吉林农业大学; 【学科专业名称】 农药学 【学位年度】 2008 【论文级别】 硕士 【网络出版投稿人】 吉林农业大学 【网络出版投稿时间】 2009-09-12 【关键词】 吡蚜酮; 高效液相色谱; 水稻; 残留动态; 光降解; 【英文关键词】 pymetrozine; HPLC; paddy; residue dynamics; photodegradation; 【中文摘要】 吡蚜酮是一种选择性杀虫剂,基本结构是嘧啶偶氮甲碱。蔬菜、园艺作物、棉花、大田作物、落叶果树和柑橘上的敏感和抗性蚜虫、粉虱摄食吡蚜酮处理过的植物汁液后,停止取食直至饿死。最近,美国环境保护署认为吡蚜酮有致癌作用的可能性,为了食品和环境的安全,需要一些简单和可靠的残留分析方法检测吡蚜酮。本文对吡蚜酮在稻田水、土和水稻植株中的分析方法,25%吡蚜酮可湿性粒剂在稻田水、土和水稻植株中的残留动态以及在收获期水稻和土壤中最终残留量和吡蚜酮的光降解动态进行了研究。 土壤样品采用甲醇/水(8/2)和1%氨水提取,用二氯甲烷萃取,经无水硫酸钠脱水,旋转蒸发,氮吹干,甲醇定容,液相色谱仪测定。水稻植株用乙腈匀浆提取,乙酸-乙酸胺缓冲溶液溶解蒸发后残渣,用二氯甲烷萃取,无水硫酸钠脱水,蒸发至干,用甲醇定容,液相色谱仪测定。糙米、稻壳样品提取同土壤样品,净化同植株样品。水样用二氯甲烷萃取,过无水硫酸钠脱水,蒸发至干,用甲醇定容,液相色谱仪测定。采用安捷伦1100高效液相色谱,DIAMONSIL-C_(18)反相色谱柱(20cm×4.6mm),V(甲醇)/V(水)=30/70为流动相进行分析。方法的添加浓度分别为0.02mg·... 【英文摘要】 Pymetrozine is a novel selective insecticide.The basic structure is pyridine azomethine.It is effective as a powerful anti-feedant against sucking pests such as aphids,tobacco whiteflies and plant hoppers on a wide range of field,fruit and ornamental crops,provoking a feeding stop and subsequent starvation to death. Recently,the US Environmental Protection Agency(EPA) has classified pymetrozine as a "likely" human carcinogen because two types of(liver benign hepatoma and/or carcinoma) tumors occurred in rat...
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