chromato相关论文
<正> In this paper, according to the relation between the retention value and molecular parameters derived by using homo......
<正> Ⅰ. THE DFPD FOR GAS CHROMATOGRAPHY In two earlier papers, the carrier gas was mixed with oxygen or air at first an......
A pulse-discharge helium ionization detector(Valco, PD-D3-I) was used to measure xenon concentration in air. The depende......
[Objective] To optimize the extraction process of resveratrol from grape skin,so as to lay a foundation for its rational......
[Objective] To detect the content of total flavonoids in Hemiphragma heterophyllum Wall. [Method] Total flavonoids were ......
This paper presents a novel method for simultaneous online examination of free aluminum ions(Al3+)in seafood,using solid......
Two new ent-kaurane diterpenoids, ent-7a,14b-dihydroxykaur-16-en-15-one-20-oic acid(1) and 1,7a,12b,14b-tetrahydroxy-1,1......
The title compound, N-(2-(1,3,4-oxadiazol-2-yl)phenyl)-2,3-dimethylaniline, was synthesized and studied by single-crysta......
[Objective] To establish an analytical method for simultaneously determining the alisol C 23-acetate,Alisol A,alisol B,a......
QSRR Study on the Relationship between the Chromatographic Capacity Factor and Lipophilicity and Str
The capacity factors (k’) of fourteen types of halogenated thiophenols in different phases of methanol-water eluent wer......
[Objective]To establish methods to determine the content of Aconitine,Yunaconitine,Crassicauline and Vilmorrianine in Ac......
Determination of Tracheloside and Trachelogenin in Trachelospermum jasminoides (Lindl.) Lem. from Di
[Objective]To determine tracheloside and trachelogenin in Trachelospermum jasminoides( Lindl.) Lem. from different produ......
[Objective] To establish GC-MS fingerprint determination method for volatile oils of FLOS DENDRANTHEMA INDICI,and to pro......
采用反相高效液相色谱(RP-HPLC)-脉冲电化学检测(PED)法测定了重组人生长激素(rhGH)中的诱导剂异丙基-β-D-硫代半乳糖苷(IPTG)。r......
Objectives This paper isto investigate the correlation between plasma total ho-mocysteine (tHcy) and coronary artery di......
The title compound 2,5-bis(morpholino)-3,4-bis(p-chlorophenyl) thiophene 2 was obtained by the reaction of -thio-p-chlor......
2,3,4,6-Tetra-O-benzyl-D-glucopyranose l-a-(p-nitrobenzoate)reacted with aryl ethersin the presence of Lewis acid to gi......
Studies on the structures and syntheses of arteannuin and related compounds——ⅩⅥ.Synthesis of arteann
Arteannuin E was synthesized from methyl β-epoxy arteannuinate by treatment withformic acid followed by hydrolysis and......
Two new triterpenoid sapon.ins 1 and 2 were isolated from the crude saponin extract of Oxytropis glabra DC by Si gel ch......
[Objective] The aim was to explore an optimized method to measure the artificial pigment by means of high performance li......
山药为平补三焦之药,从古至今临床广为应用。有关生山药中氨基酸种类已有人进行了一些探讨(蒋滢等.中草药1986;17(3):9],但对炮制......
从牛蒡子中分离出牛蒡甙,用酶解方法得到甙元。对牛蒡子中牛蒡甙及其甙元用HPLC法测定了含量。使用碳-18反相色谱柱,甲醇-水(1:1)......
Traditional Chinese medicine (TCM) is a great treasure of China, the analysis of which is an arduous task. The viewpoin......
Effect of combination of extracts of ginseng and ginkgo biloba on acetylcholine in amyloid beta-prot
AIM: To determine the concentration of acetylcholine (ACh) in amyloid beta-protein (Aβ) treated rats and offer a method......
Analysis of volatile oil in Rhizoma Ligustici Chuanxiong-Radix Paeoniae Rubra by gas chromatography-
Aim:To analyze the volatile chemical components of the herbal pair RhizomaLigustici Chuanxiong-Radix Paeoniae Rubra(RLC......
从玄参科三色马先蒿(Pedicularis tricolor)全草的乙醇提取物中分离得到17个化合物,采用波谱方法鉴定了它们的结构。其中化合物1(2......
本文主要研究了中药指纹图谱的相似度算法。提出了一种基于模糊数学和信息学的新方法用于中药指纹图谱的相似度比较。相对熵是一种......
从青海产鄂西香茶菜(Isodon henryi)的叶中分离得到1个新的苯取代二酮,利用波谱技术鉴定其结构。同时,还得到了8个已知化合物。
A......
Isolation and Purification of Terminal Deoxynucleotidyl Transferase by Using Chromatofocusing and Pr
Using a combined method of chromatofocus-ing and oligo(dT)-cellulose affinity chromato-graphy, the terminal deoxynucleo......
目的建立清热解毒注射液、单味药材和中间体的统一化色谱指纹图谱(normalized chromato-graphic fingerprints,NCFP),用25个相对统......
[Objective] To study the effects of cycocel(CCC) on growth and hypericin content of Hypericum perforatum L..[Method] Dif......
[Objective] To identify components and differences of the essential oil from roots of Aralia cordata Thunb.in Qingchuan ......
[Objective]To establish a HPLC-ELSD fingerprint analysis method of Fritillaria unibractea,and provide references for the......
[Objective] To determine the contents of three major tanshinones in Salviae miltiorrhizae health tea by HPLC.[Method] Th......
Based on the LC-ESI/MSn technique, the four pairs of isomers of psoralen and isopsoralen, imperatorin and isoimperatorin......
[Objective]The natural active substances in 2 kinds of Chrysanthemum were studied,aiming at providing theoretical eviden......
从披针叶胡颓子(Elaeagnus lanceolata)的干燥枝叶中分离得到19个化合物,其中isoamericanol B(1)为一新化合物,经波谱学方法鉴定其......
[Objective] To establish a method to determine the content of bergenin in RHIZOMA BERGENIAE SCOPULOSAE by HPLC.[Method] ......
Determination of Protocatechuic Acid in CORTEX ACAN THOPANACIS by High Performance Liquid Chromatogr
[Objective] To establish a method to determine the content of protocatechuic acid in CORTEX ACAN THOPANACIS.[Method] Con......
[Objective] To analyze volatile constituents in fresh leaves of Pelargonium odoratissimum(L.)L ’Her.ex Ait..[Method] Vo......
[Objective] To establish methods for determining contents of total flavonoids and rutin in Ephorbia helioscopia L.from C......
A new method for synthesis of ω-acyl carboxylic acids is described. Photooxygenation ofcyclic silyl enol ethers sensit......
In this paper, we investigated the selective cleavage of acyclic acetals with the reagent system, ZrCl_4-LiAlH_4. The r......
[Objective]To study the optimum extraction process of FRUCTUS SCHISANDRAE CHINENSIS in Zhenzaoanshen capsule.[Method] Ta......
[Objective] To detect the aradecoside A contents in Aralia plants in different production areas by HPLC. [Method] Chroma......
[Objective] Based on optimizing a variety of experimental conditions,a method for the determination of resveratrol in RH......
Content Determination of β-elemene in Lantana camara Linn in Panxi Area of Sichuan Province of China
[Objective] To establish HPLC analyses method for the β-elemene content in L. camara; and to detect the β-elemene cont......
Effects of Ethanol Concentration on the Extraction Rate of Gentiopicroside from the Gentiana macroph
[Objective] To explore the effects of ethanol concentration on the extraction rate of gentiopicroside in RADIX GENTIANAE......
