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程序升温法
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Methods: Method of Gas Chromatographic. The column was INNOWAX (0.32 mm×30m,0.25μm). The FID temperatures was 250℃. 方法:采用气相色谱法,色谱柱为INNOWAX石英毛细管柱(0.32 mm×30 m,0.25μm),采用程序升温法,检测器温度为250℃。 短句来源 Methods Z]Method of capillary gas chromatography was used. The column was HP-INNOWAX(0.53mm×30m,1μm),The program temperature was used. The FID temperature was 250℃,The carrier gas was nitrogen whose flow rate was 5ml/min. 方法采用毛细管气相色谱法,色谱柱为HP-INNOWAX(0.53mm×30m,1μm)弹性石英毛细管色谱柱,采用程序升温法,检测器温度为250℃,载气为N2,流速为5ml/min,进样口温度为200℃。 短句来源 ACCURACY AND PRECISION OF NONISOTHERMAL AND ISOTHERMAL DRUG STABILITY EXPERIMENT 程序升温法研究药物稳定性的试验误差 短句来源 
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The effective content of the pesticides,such as arprocab,tetramethrin, octachlorodipropyl ether,permethrin were determinated by gas chromatography with program temperature. The method is that four pesticides wece deter minated with one column at the sametime,so it is very fast and simple, and the result was satisfied. The recovery ratio of all pesticides ranged from 84.8%～108.2%, with less than 5.47% relative standard deviation. 应用气相色谱──程序升温法，同时完成对卫生杀虫剂残杀威、八氯二丙醚、胺菊酯、二氯苯醚菊酯等有效成分分析，证实是一种操作简单、准确度高、精密度高的新方法。测定有效成分的回收率在８４．７８～１０８．２％，变异系数在４．３１～５．４７％。 文摘来源 A new programmed heating model(exponential heating model)for drug stabilityexperiment is intreduced.In this heating model,the temperature rising rate dT/dt is increased 2～4times when the temperature increases by every 10℃ to fit most chemical reactions:dT/dt=a·(dT/dt)_0.A comparison of the new heating model and the linear,reciprocal,andlogarithmic heating models is made and discussed.The results indicate that in the new programmedheating experiment,the degradation of drugs can be more uniform within differe... 介绍了一种新的程序升温（指数程序升温）药物稳定性预测加速试验方法及计算方法。在这一新的程序升温方法中，温度每升高１０℃，升温速率将增大２～４倍：ｄＴ／ｄｔ＝ａ￣（（Ｔ－Ｔ＿０）／１０）·（ｄＴ／ｄｔ）＿０，使药物在高温和低温范围内的降解程度尽可能一致，提高了试验准确度。采用单因素优选法和数值积分法处理试验数据，避免了任何近似处理，使计算结果准确可靠。与线性升温、倒数升温和对数升温加速试验进行了对比，结果表明，指数程序升温法的准确性优于其它３种升温法。 文摘来源 By a theoretical investigation of simulated nonisothermal data, the inability to determine the rate order for degradation of drugs with ordinary nonisothermal experiment was discussed. Results indicate that both rate order n and activation energy E can change the curvature of the ct curve and the change caused by higher n can be compensated by higher E in ordinary nonisothermal experiments. That means a suitable E can always be assessed to fit each of the definite n (0, 1, or 2 i... 通过电子计算机模拟程序升温加速试验，从理论上阐明了常规的程序升温法不能确定药物降解反应级数的原因是因为同一组数据可由不同的反应级数和活化能的组合所拟合；解决这一问题的关键是在一个变温程序中包含升温和降温部分；据此提出了一种新的程序变温方法（程序升降温法）。利用这种方法，可以真正做到只通过一次程序变温加速试验，就获得包括反应级数在内的药物降解的动力学参数，且确定反应级数的能力与恒温法相近似。 文摘来源 << 更多相关文摘 
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