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刊物信息

期刊名称:药物分析杂志
主管单位:中国科学技术协会
主办单位:中国药学会
承办:中国食品药品检定研究院
主编:金少鸿
地址:北京天坛西里2号
邮政编码:100050
电话:010-67012819,67058427
电子邮箱:ywfx@nifdc.org.cn
国际标准刊号:ISSN 0254-1793
国内统一刊号:CN 11-2224/R
邮发代号:2-237
 

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SEC/MALLS法测定肝素钠及其类似物的绝对分子质量及分布___

Determination of absolute molecular weight and distribution of heparin and its similarities by SEC-MALLS method

分类号:
出版年·卷·期(页码):2010,30 (4):0-0
DOI: 10.16155/j.0254-1793.2017.01.01
-----摘要:-------------------------------------------------------------------------------------------

 
目的:测定肝素钠及其类似物的dn/dc值及绝对分子质量,以便对该类药品进行更好的质控。方法:高效凝胶渗透色谱和激光光散射联用(SEC-MALLS)法,采用TSK G3000SWXL色谱柱(300 mm×7.8 mm,10 μm),流动相为2.84%硫酸钠溶液(含0.2%叠氮化钠),流速为05 mL·min-1,检测器为18角激光光散射器(MALLS)和示差折光检测器(DNDC)联用。结果:测得5个样品的dn/dc值,12个厂家共32批肝素及类似物的绝对分子质量及其分布情况。结论:该方法可用于该类产品的分子质量测定,并能初步判定样品是否含有其类似物。
 

-----英文摘要:---------------------------------------------------------------------------------------

Objective:To determine the dn/dc value and absolute molecular weight of heparin and its similarities,so as to control the quality of this kind of drugs better.Methods:SEC-MALLS method,TSK-G3000PW column was used with mobile phases of 2.84% sodium sulfate (with 0.2% sodium azide),at 35 ℃ with a flow rate 0.5 mL·min-1 by DNDC with laser light scattering detection.Results:dn/dc values of 5 samples were got,so as to the absolute molecular weight and absolute molecular weight distribution of 32 samples from 12 factories.Conclusion:The method can be used for determination of molecular weight of samples above,and assessment whether its similarities were incorporated.

-----参考文献:---------------------------------------------------------------------------------------
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