查询词典 chromatographic

Qualitative and quantitative analyses were carried out for the analyte under the multiple reaction monitoring mode after the chromatographic separation on a Waters Atlantis T3 column (150 mm×2.1 mm, 3 μm). The quantitation was performed with deuterated N-nitrosodiethanolamine as internal standard. The limit of quantitation for N-nitrosodiethanolamine was 50 μg/kg. The mean recoveries were 89.1%-98.2% at the spiked levels of 50-250 μg/kg, with the intra-day precision less than 9% and the inter-day precision less than 11%.

NDELA经waters Atlantis T3色谱柱(150mm×2.1mm， 3μm)分离后在多反应监测模式下进行串联质谱定性及定量分析，以d8-NDELA为内标定量NDELA的方法定量限为50μg/kg；在50~250μg/kg的3个添加水平范围内的平均回收率为89.1%~98.2%，日内精密度均小于9%，日间精密度均小于11%。

A method for Pendimethalin quantitation was established by using diamyl phthalate as internal standard with GC. The chromatographic column was HP-5, and temperature program was used: 200℃ for 0.5 min, programmed to rise at 10℃ to 240℃, then isothermal for 2.5 min.

采用HP-5石英毛细管色谱柱和FID检测器，以邻苯二甲酸二戊酯为内标物，在适宜的色谱条件下对二甲戊灵原药进行定量分析。

Institute for the Control of Agrochemicals of Hubei Province, Wuhan 430070, China Abstract: A gas chromatographic method applied to determination of a paint for window screen is described using with an AT-101 capillary column and diamyl phthalate as internal standard. Three ingredients (propoxur, permethrin and cypermethrin) in a formulated mixture were successfully analyzed under a single set of conditions.

湖北省农药检定管理所，武汉 430070 摘要：介绍了用AT-101毛细管柱，以邻苯二甲酸二正戊酯为内标，对灭蚊窗涂剂中3种有效成分残杀威、氯菊酯、氯氰菊酯同柱同条件下定量分析的方法。

The Chemical method is based on the Diels-Alder reaction of conjugated dienes with maleic anhydride and the chromatographic analysis use a packed column with SE-30 as stationary phase.

建立了用共轭二烯烃与马来酸酐Diels-Alder特性反应和非极性固定液SE-30填充柱1m×1。

The determination of high molecular weight impurities which existed in cefotaxime, ceftriaxone and ceftazidime and the influences of different ion-pair reagents; pH value of the eluants and the flow rate on the chromatographic column were discussed in detail.

以建立头孢噻肟、头孢曲松、头孢他啶中高分子杂质含量的快速测定方法为目的，对不同离子对试剂、洗脱剂pH、洗脱剂类型、离子对浓度、洗脱速度等因素进行了研究。

The structures of the isomers were assigned by using 2D NMR techniques such as gCOSY. Comparing to the eluates from the chromatographic column, the first band contains the m2, the second band contains the ml.

利用一维及二维核磁共振(2D NMR)技术，结合三元胺中吡啶环的磁屏蔽效应，对两个异构体在溶液中的结构进行了解析，对应于Dowex 50Wx 2柱色层分离的第一包带的H离子为n2(cmen的2位胺基与Cl处于邻位)：第二色带的阳离子为ml。

Chromatographic separation on a C18 column was achieved using a binary eluent containing methanol and water with 0.2% formic acid.

本研究特别针对人和动物治疗疾病较为常用的磺胺类抗生素和氯霉素给予关注。

In addition to CIP monitoring, the sensor can be used to monitor the conductivity of eluents in chromatographic separations and to detect liquid interfaces.

除CIP监测外，传感器还可被用于监测色谱分离层分离洗提液的传导率，探测液体界面。

Separation of racemic mixtures of thirty-eight secondary aromatic alcohols and arylethanediols with different substituting group was achieved with HPLC by using Chiralcel OD and Chiralcel LJ as chiral stationary phase and hexane/2-propanol mixtures of different ratios as eluents. The chromatographic parameters of these racemates on OD and OJ columns were examined.

在ChiralcelOD和ChiralcelOJ两支多糖类手性固定相上，以各种不同配比的正己烷-异丙醇为洗脱剂对38种带有不同取代基的芳香仲醇及芳香乙二醇类手性化合物的对映体进行拆分，考察了这些外消旋体在这两支手性柱上的色谱行为。

According to the basic characteristics of solute migration on chromatographic columns , eluting curve expression has been obtained under the conditions of balance chromatography without considering the reverse flow.

根据溶质在色谱柱中迁移的基本特征，在平衡色谱和不单独考虑逆向流的简化情况下，得到了流出曲线的表达式。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。