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5 . 1 方法提要 樣品用甲醇溶解，以甲醇＋0.05 % H3PO4 為流動相，使用ZORABX80AExtend 一Cl8 不銹鋼柱和可變波長紫外檢測器在260nm 波長下，用外標(biāo)定量法對樣品中大黃酸、大黃素、大黃酚及大黃素甲醚含量進(jìn)行分離測定，以大黃素為標(biāo)樣用校正法對母藥中蘆薈大黃素含量進(jìn)行分離測定 測定步驟 稱取約0.149 （精確至0.0002g ）及0.02g標(biāo)品于100mL 的容量瓶中，用甲醇溶解稀釋至刻度，搖勻，按下列順序進(jìn)樣：a ．標(biāo)樣溶液、b ．試樣溶液、c ．試樣溶液、d ．標(biāo)樣溶液。 5 . 5 計算 將測得的兩針試樣溶液及試樣前后兩針標(biāo)樣溶液中大黃酸、大黃素、大黃酚及大黃素甲醚峰面積分別進(jìn)行平均。試樣中蘆薈大黃素、大黃酸、大黃素、大黃酚及大黃素甲醚的質(zhì)量百分含量x ( % ）按下式計算： 式中： Al 一相鄰兩針標(biāo)樣溶液中大黃酸、大黃素、大黃酚及大黃素甲醚峰面積的平均值； A2 廠相鄰兩針試樣溶液中蘆薈大黃素、大黃酸、大黃素、大黃酚及大黃素甲醚峰面積的平均值； m1 一大黃酸、大黃素、大黃酚及大黃素甲醚標(biāo)樣的質(zhì)量，g ; m2:試樣的質(zhì)量，g ; P 一標(biāo)樣中大黃酸、大黃素、大黃酚及大黃素甲醚的質(zhì)量分?jǐn)?shù)，％。 |
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wypward(金幣+1):謝謝參與 2010-09-04 21:29:58
05100(金幣+15, 翻譯EPI+1):自己已經(jīng)湊合翻譯了。但還是謝謝你。金幣都獎勵給你吧。 2010-09-06 11:15:40
wypward(金幣+1):謝謝參與 2010-09-04 21:29:58
05100(金幣+15, 翻譯EPI+1):自己已經(jīng)湊合翻譯了。但還是謝謝你。金幣都獎勵給你吧。 2010-09-06 11:15:40
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5.1 Method Summary Samples are dissolved in methanol.make methanol +0.05% H3PO4 the mobile phase. ZORABX80AExtend a Cl8 stainless steel column is used. variable wavelength UV detector is set at 260nm wavelength. Separation and determination of rhein, emodin, chrysophanol in the samples are quantified by an external standard mode. Emodin is used as standard sample to separate and determine the content of aloe emodin in the parent drug by correction methods. Determination procedure About 0.149 (accurate to 0.0002g) and 0.02g standard products are weighed and put in 100mL volumetric flask, diluted with methanol to scale, shake, and inject samples according to the following sequence : a. Standard sample solution, b. Sample solution, c. Sample solution, d. Standard sample solution. 5.5 Calculation Work out the average peak area of the two sample solution and two-pin standard samples before and after of rhein, emodin, chrysophanol and physcion,respectively. Contents in x (%) of aloe emodin, rhein, emodin, chrysophanol and physcion in samples are calculated as follows: PS: Al means the average peak area of an adjacent two-pin standard sample solution of rhein, emodin, chrysophanol and Physcion ; A2 means the average peak area of adjacent two-pin sample solution of aloe emodin, rhein, emodin, and emodin chrysophanol ; m1 1 means quality of the rhein, emodin, chrysophanol and Physcion standard sample, g; m2: the quality of the sample, g; P means the wt% of rhein, emodin, chrysophanol and physcion in the sample. |
2樓2010-09-04 19:23:59
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