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- Keywords gas chromatography/mass spectrometry;trimethylsilyl derivatization;7 aminonitrazepam;urine; 气相色谱/质谱;三甲基硅烷衍生化;7-氨基硝西泮;尿;
- Trimethylsilyl Derivatization 硅烷衍生化
- Emphases were given to the extraction and derivatization of PCP. 重点介绍了PCP的提取、衍生化过程,同时总结了各种方法的优缺点。
- For the apolar compounds, the derivatization was not necessary. 非极性化合物则不需要衍生化。
- A new 1,2-bis(trimethylsilyl)acetamide was synthesized by hydrosilylation. 通过硅氢加成反应合成了一种新型1,2-双(三甲氧基硅基)乙烷。
- Derivatization methods were used to study the monosaccharide composition. 本文采用薄层色谱法分析多糖的单糖组成。
- The organic phases (neutral and basic fractions) were concentrated for trimethylsilyl (TMS) derivatives. 将尿样本经酶水解、碱化、有机溶剂提取;
- Trimethylsilyl grafted MCM 48 was prepared using TMCS (trimethylcholorosilane) and uncalcined MCM 48. 本文利用三甲基氯硅烷与未焙烧MCM-48反应,实现对MCM-48的表面硅甲基接枝改性。
- Systematic Studies on the Reactions of Lanthanide Trichlorides with Na[1,3-Bis(Trimethylsilyl) Cyclopentadienyl]. Crystal Structures of [1,3-(Me3Si) 2C5H3] 3 Ln (Ln = La, Nd, Gd, Dy) XIE Zuowei (谢作伟);
- This article reviews precolumn derivatization methods of glycans currently used for HPLC analysis. 为提高检测的灵敏度,往往需要对糖链衍生化。
- Trimethylsilyl cyclopropyl ethers can react with the silica gel to form the cyclopropanols when Lewis acid such as ZnX2 existed. 环丙烷基硅醚在卤化锌的作用下能够与硅胶反应生成环丙基醇。
- Objective:Aloe polysaccharide was identified and quantified by better method of derivatization. 目的:探索较佳的衍生化方法,对芦荟多糖进行定性定量分析。
- A precolumn derivatization with OPA of HPLC method was established for the determination of Hepa Merz injection. 采用高效液相色谱邻苯二甲醛柱前衍生化法,测定进口药品阿波莫斯注射液中天门冬鸟氨酸的含量。
- Trimethylsilyl groups are anchored on the surface of MCM 48, and the resulted silylated MCM 48 material has long range ordered structure, nar... 改性后MCM-48具有良好的长程有序结构,较窄的孔径分布,较大的孔体积和较高的比表面积,相对于未焙烧MCM-48,硅甲基接枝改性MCM-48的表面亲水性降低,亲油性得到提高。
- Chlorotrimethylsilane was prepared, with trimethylsilyl ether and hydrochloride as raw materials, concentrated sulfuric acid as catalyst. 以三甲基硅醚和氯化氢气体为原料,浓硫酸为催化剂合成了三甲基氯硅烷。
- Audi will further expand the derivatization in the B segment in the present year with the A5 Sportback. 奥迪将进一步扩大衍生在B部分在本一年的A5跑车。
- This can make heavy atom derivatization in the presence of reducing agents, difficult and frustrating. 这就使得用重金属原子作同晶置换法遇到了麻烦。
- A method was developed for pre-column derivatization and gas chromatographic analysis of validamycin A residue in soil. 建立了土壤中井冈霉素A残留的柱前衍生化气相色谱分析方法。
- Secondly, a robotic sample preparation instrument has been optimized for the amino acid derivatization. 其次,自动化的氨基酸样品制备仪器已经得到优化。
- The synthesis of 1,1 di(trimethylsilyl) 3,6 dimethoxycyclopropyl naphthalene is reported in this paper. Its spectral data are consistent with the expected structure. 本文报导了一种新化合物1,1-二(三甲基硅)-3,6-二甲氧基环丙萘的合成.测得的该化合物的光谱数据与预计的结构完全一致