高效液相色谱法测定奥沙利铂注射液中奥沙利铂的含量和有关物质

建立以高效液相色谱法测定奥沙利铂注射液中的奥沙利铂有关物质和含量的方法,以碳十八烷基硅烷键合硅胶为填充剂,规格250mm×4.6mm,粒径5μm,以水-甲醇(90∶10)为流动相,流动相用0.45μm的膜过滤,紫外检测波长为250nm。奥沙利铂在50～1600μg/ml的浓度范围内,峰面积与浓度呈线性关系,线性曲线方程为A=3650.9C+17.095(r=0.9999),最低检测限为1.2ng。加样平均回收率为99.4%(RSD=0.81%,n=9)。本方法简便、灵敏、准确,可用于奥沙利铂注射液中的有关物质和含量的控制。     

高效液相色谱法测定鞣柳硼三酸散中水杨酸含量

通过采用高效液相色谱法,建立了对鞣柳硼三酸散中水杨酸的含量测定方法。以Agilent SB-C18色谱柱(250mm×4.6mm,5μm),甲醇-0.4%磷酸溶液(60∶40)为流动相,检测波长305nm,流速1.0m L/min,25℃柱温,在此优化的条件下,水杨酸在0.063 44~1.268 8μg之间线性关系良好(r=1.000 0,n=5),回收率为101.26%,RSD为0.48%(n=9)。该方法简便、准确,可用于鞣柳硼三酸散中水杨酸的含量测定,对控制制剂质量有一定指导意义。     

HPLC法测定黑荞麦中黄酮苷的含量

目的:建立黑荞麦中黄酮苷含量测定方法.方法:微波萃取高效液相色谱法,色谱柱:Shmadzu Shim-pack-vp-ODS(150mm×4.6mm,5μm);流动相:甲醇(0.02mol/L)-磷酸二氢钾(用磷酸调节PH=3.0)(80:20),流速:1.0 m L/min;进样量:10μL.结果:线性范围为40-280mg/L,加标回收率为99.5%-100.2%,精密度为RSD=0.76%(n=6).结论:该方法不仅节省时间,重现性好,而且精密度高,为黑荞麦中黄酮苷的开发利用和含量的测定分析提供参考依据.     

HPLC-ELSD法测定顺铂脂质体中DSPE-PEG2000含量

为建立以HPLC-ELSD法测定顺铂脂质体中DSPE-PEG2000含量的方法,以Waters Sun Fire prep Silica(250 mm×4.6 mm,5μm)为分离柱(柱温25℃),甲醇-冰醋酸-三乙胺(500∶8∶2,V/V/V)为流动相(流速1 m L/min),蒸发光散射检测器检测(雾化温度50℃,蒸发温度100℃,气体流速1.6 m L/min).结果表明,DSPE-PEG2000在21.08421.6μg/m L浓度范围内线性关系良好(r=0.999 3),加样回收率为99.03%101.23%(RSD=1.08%,n=9).该法能简便、快速、准确地测定顺铂脂质体中DSPE-PEG2000含量,重复性良好.     

HPLC法同时测定四季三黄丸中盐酸小檗碱、黄芩苷和栀子苷的含量

建立了一种同时测定四季三黄丸中盐酸小檗碱、黄芩苷和栀子苷含量的反相高效液相色谱(RP-HPLC)法.色谱条件为Agilent Zorbax SB-C18分离柱(250 mm×4.6 mm,粒径5μm),乙腈-6 mmol/L KH_2PO_4流动相梯度洗脱,流速1.0m L/min,多波长切换检测.结果表明,盐酸小檗碱、黄芩苷和栀子苷线性范围分别为3.8 28.4μg/m L(r=0.999 8),16.5 123.8μg/m L(r=0.999 6)和3.8 28.4μg/m L(r=0.999 7),加样回收率分别为97.2%(RSD=1.5%),97.7%(RSD=2.6%)和102.9%(RSD=2.8%).本方法可以同时分析四季三黄丸中盐酸小檗碱、黄芩苷和栀子苷含量,对该制剂质量进行有效监控.     

RP-HPLC法同时测定七味冬青叶散中苦杏仁苷、丹酚酸B和杜鹃素的含量

目的建立HPLC法同时测定七味冬青叶散中苦杏仁苷、丹酚酸B和杜鹃素的含量测定方法。方法采用高效液相色谱法(HPLC),以Sunfire C18(150 mm×4.6 mm,5μm)柱为色谱柱,流动相以甲醇-0.1%的磷酸溶液进行梯度洗脱,流速为1.0 m L/min,以210、286、297 nm为检测波长,柱温为30℃,进样量:10μL。结果苦杏仁苷、丹酚酸B和杜鹃素分别在40.720～895.84、38.960～857.12、1.9800～43.740μg/m L呈良好的线性关系,相关系数分别为0.9999、1.0000、0.9999,平均回收率分别为99.5%、100.6%、99.6%,RSD分别为1.5%、1.0%、1.6%(n=6)。结论所建立的方法可以应用于七味冬青叶散的质量控制。     

引阳索颗粒剂中淫羊藿苷的含量测定研究

目的:建立用高效液相色谱法测定引阳索颗粒中淫羊藿苷含量的方法。方法:采用ODSC18色谱柱(10μm,4.6×200mm),水-乙腈(71∶29,体积比)为流动相,流速为1.0mL/min,检测波长为270nm,柱温为30℃。结果:淫羊藿苷在进样量0.2492μg～1.4952μg范围内线性关系良好,r=0.9994,平均加样回收率为99.57%,RSD为0.87%。结论:本方法操作简单,重现性好,可以作为该制剂的含量测定方法,适于质量控制。     

HPLC法测定双黄水凝胶中盐酸小檗碱的含量

目的建立测定双黄凝胶中盐酸小檗碱含量的高效液相色谱法。方法采用十八烷基硅烷键合硅胶柱Kromasil C18(250 mm×4.6 mm,5μm);以乙腈-0.05 mol/L磷酸二氢钾溶液(50∶50)为流动相,流速为1.5m L/min;检测波长为345 nm;柱温为室温。结果盐酸小檗碱在4.58~45.83μg·m L-1范围内线性关系良好,r=0.999 8,回收率为99.74%,RSD=1.49%。结论该方法操作简便快速,准确稳定,重现性好,可用作双黄凝胶刘桂燕中盐酸小檗碱含量测定方法。     

替硝唑缓释微球的制备及高效液相法测定的含量及包封率

目的:建立替硝唑缓释微球的制备方法及微球的含量和包封率的测定方法.方法:采用乳化溶剂扩散法制备替硝唑缓释微球及高效液相色谱法测定替硝唑缓释微球的含量及包封率,色谱条件:色谱柱为迪马C18(250 mm ×4.6 mm,5μm),流动相为甲醇-乙腈-水(20∶10∶70),检测波长为317nm.结果:替硝唑浓度在99.19 μg/mL～148.78 μg/mL范围内线性关系良好,R值为0.999 8.精密度试验RSD为0.94％,回收率为100.3％.结论:该制备和测定方法可用于替硝唑缓释微球的制备及含量和包封率的测定,且方法简便、快捷,准确可靠.     

高效液相色谱法同时测定蒙药复方述达格-4中三种黄酮类成分的含量

采用反相高效液相色谱法,色谱柱为Diamosil C18(4.6mm×250mm,5μm),以甲醇(A)-0.5%磷酸水溶液为流动相,梯度洗脱(0～20min,43%A;20～30min,43%A→61%A;30～60min,61%A),流速1.0mL·min-1检测波长为350nm,柱温30℃,进样量20μL,建立同时测定蒙药复方述达格-4中高良姜素、槲皮素、芦丁的高效液相色谱含量测定方法.结果表明高良姜素、槲皮素、芦丁的线性范围分别为1.06～10.6μg(r =0.9999),0.0276～0.276μg(r = 0.9999),0.0264～0.264μg(r = 0.9999);平均加样回收率(n = 6)分别为98.71%,97.66%,98.13%.本法准确、简便,具有良好的重复性.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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