共查询到20条相似文献，搜索用时 64 毫秒
1.
目的：建立索拉非尼的HPLC法测定含量。方法：采用phenomenex C8色谱柱（250mm×4．6μm×，5μm），流动相：三乙胺磷酸缓冲液（取纯水990mL，加入三乙胺10mL，用磷酸调节PH至5．4）-乙腈（60：40），检测波长250nm，流速：1．0mL／min。结果：索拉非尼浓度在200．17-480．41μg／mL范围内，与峰面积呈良好的的线性关系（r=0．9998），最低检测限为0．1ng。结论：本法简便，专属，重现性好，可用于测定索拉非尼含量。 相似文献
2.
高效液相色谱法测定农药样品马拉硫磷,样品用甲醇溶液提取测定。本研究方法为使用XDB—C18（150mm×4．6mm）的色谱分离柱,70％甲醇：30％水（V／V）为流动相,流速为0．8m1／min,最佳波长为220nm的紫外检测器。研究结果表明,在10-100mg／L浓度范围内峰面积与进样量呈良好的线性关系,相关系数r=0．9989;检测限为10．5μg／L（S／N=3）;相对标准偏差RSDS（n=5）1．10％,回收率为95．5％以上。 相似文献
3.
建立反相高效液相色谱法测定复方川贝精片中五味子醇甲的含量。方法：采用奥泰公司C18色谱柱（250mm×4．6mm,5μm）,甲醇-水（60：40）,检测波长为250nm,流速为1．0ml／min,柱温为30℃。五味子醇甲在6．8-68．0μg·mL＾-1范围内呈良好的线性关系（r=O．99997）。五味子醇甲平均回收率分别为96．95％。结论：本法简便、准确,可用于复方川贝精片中五味子醇甲的含量测定。 相似文献
4.
目的：测定谷丙甘氧酸胶囊中谷氧酸、丙氨酸、甘氧酸含量。方法：采用SS EXSIL ODS（250%＊4．6mm，5μm）色谱柱，0．05mol／L的醋酸钠溶液（pH6．4）：乙腈：水（70：15：5）为流动相的高效液相色谱法。结果：谷氧酸、丙氨酸、甘氨酸分别在132—308μg，48-112μg，24—56μg范围内线形良好（r=0．9998，0．9997，0．9996）；平均回收率分别为99．8％，99．8％，99．7；RSD分别为0．54％，0．62％，0．72％。结论：该方法简便快速，适用于谷丙甘氨酸胶囊中3组分含量的测定。’ 相似文献
5.
动物性肌肉组织中多种磺胺类药物残留量的研究 总被引：1，自引：0，他引：1
采用ACQUITYUPLC^TMBEHC18柱（100mm×2．1mmi．d．，1．7μm），以乙腈-0．2％乙酸水溶液（体积比1：9）为流动相；梯度洗脱；样品经乙腈和乙酸乙酯重复提取、饱和正己烷脱脂等处理；利用超高压液相色谱-电喷雾串联四极杆质谱联用（UPLC—MS／MS）技术，建立了一种能快速分离和测定动物性肌肉组织中多种磺胺类药物残留的方法。结果表明：该方法检出限（LOD）为0．04～1．35μg／kg；在1～200μg／ml范围内线性关系良好，回收率为63％～110．27％，可以满足各国对动物性食品中各种磺胺类药物的检测要求。 相似文献
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7.
建立反相高效液相色谱法测定九气拈痛丸中橙皮菩的含量。方法：采用奥泰公司C18色谱柱（283mm×4．6mm,5μm）,甲醇-水（35：65）,检测波长为283nm,流速为1．0ml／min,拄温为30℃。橙皮苷在16．4～82．01μg·mL—11范围内呈良好的线性关系（r=0．99995）。橙皮苷平均回收率分别为99．76％。结论：本法简便、准确,可用于九气拈痛丸中橙皮苷的含量测定。 相似文献
8.
高效液相色谱-串联质谱法检测蔬菜水果中65种农药残留方法研究 总被引：7，自引：0，他引：7
建立了一种高效液相色谱-串联质谱法（LC／MS／MS）同时测定蔬菜、水果中65种农药多残留的方法，并应用于样品中农药残留的定性定量检测。样品以乙腈提取，经石墨碳／氨基串联柱固相萃取，采用C18柱分离．以含0．02％甲酸乙腈-0．02％甲酸水溶液为流动相梯度洗脱，多反应监测（MRM）模式下，以保留时间和质荷比对分离出的组分予以定性确证，外标法峰面积定量。65种农药在一定的范围内线性关系良好（r〉0．995）．样品中最低检出浓度为0．02～20μg／kg，样品的平均加标回收率为70％～120％。方法简便、快速、灵敏，适用于蔬菜、水果中这65种农药的残留分析。 相似文献
9.
本实验研究阿司匹林口腔崩解片的制备方法并建立反相高效液相色谱法测定阿司匹林口腔崩解片中阿司匹林的含量。方法：采用安捷伦十八烷基硅烷键合硅胶色谱柱（218mm×4．6mm,5μm）,乙腈-四氢呋喃-冰醋酸-水（23：5：5：61）,检测波长为280hm,流速为1．0ml／min,柱温为35℃。阿司匹林在0．1～1．8μg范围内呈良好的线性关系（r=0．99996）。阿司匹林平均回收率为标示量的99．1％。结论：本制剂稳定、可靠,测定方法简便、准确。 相似文献
10.
目的探讨糌粑中过氧化苯甲酰含量测定的HPLC法。方法高效液相色谱法,色谱条件：色谱柱为C18（150mm×4．6mm,5μm）,流动相为0．005mmol／L（PH=4．O）乙酸铵：乙腈（80＋20）,流速1．0mL／min,检测波长230nm。结果糌粑中过氧化苯甲酰被盐酸羟胺还原成苯甲酸,在此色谱条件下,苯甲酸在7min内出峰,峰面积与含量在0．01—0．20mg范围内成线性,r=0．9994,平均回收率为95．5％,相对标准偏差5．7％。结论该方法快速简便,可以满足食品检验的需要。 相似文献
11.
《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
12.
《中国科学院院刊(英文版)》2008,22(1):13-14
Aresearch project on the greenhouse cultivation of Swertia chirayita Buch Ham, a popular herbal drug used by the Tibetan people against liver and gallbladder diseases, recently passed the acceptance check by a panel of experts under the auspices of Qinghai Provincial S＆T Bureau. The feat was accomplished by researchers from the Lanzhoubased CAS Northwest Institute of Plateau Biology. 相似文献
13.
The research into the origins of domestic animals is of significance not only for understanding their development per se but also for making clear the human society evolution. Although there are evidences to show that pigs were independently domesticated in a variety of places throughout the world the detailed scenario of the origin dispersal of domestic pigs in East Asia remains unclear.…… 《中国科学院院刊(英文版)》2008,22(1):7-7
The research into the origins of domestic animals is of significance not only for understanding their development per se, but also for making clear the human society evolution. Although there are evidences to show that pigs were independently domesticated in a variety of places throughout the world, the detailed scenario of the origin and dispersal of domestic pigs in East Asia remains unclear. 相似文献
14.
Among the galaxy of research development organizations in northwest Beijing's Zhongguancun district known as China's Silicon Valley two are especially well-known to IT researchers: Microsoft Research Asia 《中国科学院院刊(英文版)》2008,22(1):47-49
Among the galaxy of research and development organizations in northwest Beijing＇s Zhongguancun district, known as China＇s Silicon Valley, two are especially well-known to IT researchers： Microsoft Research Asia （MSRA）, and, within a few blocks on the other side of the street, the CAS Institute of Automation （CASIA）. While most people in Chinese scientific organizations strive to move to a large foreign counterpart, Dr. Stan Z. Li （LI Ziqing） moves against the stream. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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《中国科学院院刊(英文版)》2008,22(1):58-58
As a key component of the national initiative for basic S＆T data and infrastructure development, a nationwide survey on the lake water quality, volume and bio-resources has recently been kicked off. The move marks the systematic implementation of the secondround investigation of the country＇s lacustrine resources. 相似文献
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Bats the only mammals known to possess the real ability to fly have fascinated zoologists for a long time with their long-distance migration. How do they find their way home from an altitude of kilometers above sea level where their stunt of ultrasonic echolocation does not work?…… 《中国科学院院刊(英文版)》2008,22(1):3-4
Bats, the only mammals known to possess the real ability to fly, have fascinated zoologists for a long time with their long-distance migration. How do they find their way home from an altitude of kilometers above sea level, where their stunt of ultrasonic echolocation does not work？ Recent discoveries supported the theory that bats might be able to use magnetic clues to figure out their own position,just like what birds do. However, the latest results from a joint study by a group of researchers from the CAS, East China Normal University and University of Auckland reveal that bats apply an interesting strategy different from the one underlying birds＇ orientation technique, though they both are believed to derive information about their position from the subtle changes in the magnetic field of the Earth. 相似文献
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《中国科学院院刊(英文版)》2014,(3):252-252
<正>On February 12,2014,the international academic journal Cancer Research published an article online entitled"Latency Associated Nuclear Antigen of Kaposi's Sarcoma Associated Herpesvirus Promotes Angiogenesis through Targeting Notch Signaling Effector Hey1",as a result from the research conducted by Prof.LAN Ke’s lab at the Institut Pasteur of Shanghai,Chinese Academy of Sciences. 相似文献
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SONG Jianlan 《中国科学院院刊(英文版)》2014,(3):217-220
<正>Scientists from CAS and the Max Planck Society(MPG)met on May 13,2014 in Beijing to celebrate their four-decade-long ST cooperation and cherished friendship,anticipating further development of the bilateral relation.This partnership formally began four decades ago with a visit paid by then MPG President,Prof.Lüst to CAS,introduced CAS President BAI in his address at the celebration:"During the visit,CAS and MPG confi rmed the basic principles of cooperation,that is equality and mutual benefi ts for both sides,and reached agreement to develop a collaborative partnership."This occurred only two years after the establishment of the diplomatic relations between Germany and China,despite the shadow of the Cold War."Building up a partnership between Germany and 相似文献
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TANG Kun 《中国科学院院刊(英文版)》2014,(2):161-165
<正>The scientifi c goals of the Partner Group are to utilize large scale genomic polymorphism data to make fi ne inferences about human demographic history and various forms of natural selection in the human genome;and to understand the genetic basis and evolutionary mechanisms underlying the common variations in human facial morphology,both within and between populations. 相似文献