【摘 要】
：
建立了测定药品硝酸硫胺中含有的中国药典规定的前3类有机溶剂含量的方法,以确定它们在药物中的残留量和比例.实验方法采用毛细管气相色谱法,首先采用GC-MS对样品进行扫描定
论文部分内容阅读
建立了测定药品硝酸硫胺中含有的中国药典规定的前3类有机溶剂含量的方法,以确定它们在药物中的残留量和比例.实验方法采用毛细管气相色谱法,首先采用GC-MS对样品进行扫描定性,再应用离子火焰检测器(FID)对残留的有机溶剂进行定量,应用项空和直接近样两种方式采集数据,以DB-624色谱柱(30 m×250μm×1.4μm)对样品进行分离.采取程序升温,载气为氯气,外标法计算含量.结果显示:在各色谱条件下,测得各溶剂的线性良好(R20.90),平均回收率为95.32%～99.25%.RSD为3.72%～7.35%,最低检出限为1.78×10-6～1.45×10-5,所测试药品中除甲醇、丁酮、乙酸3种有机溶剂有检出外,其他都未检出.
其他文献
The pressureless infiltration kinetics was investigated by plotting the infiltration distance as function of the infiltration time. The effects of key process p
The structural and magnetic properties of Pr0.1CexTb0.9-x Fe1.9 alloys were investigated by using X-ray diffraction, AC susceptibility, VSM and standard strain
A series of stearates with different rare-earth ion were investigated as thermal stabilizers for rigid PVC at 180 ℃ in air. Their stabilizing efficiency was ba
Small amounts of nanocrystalline Al2 O3 particles were doped in WC-Co nanocrystalline powders to study their reinforcing effects, and spark plasma sintering tec
The droplet size distribution with large-holed compound sieve tray operating in the spray regime is measured by using a double electrical probes technique in a
A series of transparent casting polyurethane resins (TCPU) were synthesized from cycloaliphatic diisocyanate (IPDI or H12MDI), polyol, chain extender, crosslink
The density of liquid Ni-Ta alloys was measured by using a modified sessile drop method. It is found that the density of the liquid Ni-Ta alloys decreases with
Hot compression was conducted at a Thermecmaster-Z simulator, at deformation temperatures of 800～1040℃, with strain rates of 0.001～50 s-1 and height reduction of
Ingot metallurgy (IM) aluminum has long been the subject and attracted the attention of many metallurgists and textural researchers of materials. Due to the int
After purified by mixture of sulfuric acid and nitric acid, the multi-walled carbon nanotubes(MWNTs)were modified with stearic acid(SA). The modified carbon nan