查询词典 water column

The problem that salt accumulating on the top of fractionating column is solved by water-washing on line with good result.

介绍了大连石化公司三催化装置分馏塔结盐情况，对结盐现象进行了分析，通过采取在线水洗措施解决了塔顶结盐问题，取得了好的效果。

Hippuric acid can be well separated by RP-HPIC on ODS column and with methanol-water- acetic as mobile phase and UV detector at 254nm.

在生产酸牛乳时，原料乳中马尿酸脱甘氨酸生成苯甲酸，从而使酸牛乳中天然苯甲酸含量增加[2]。

The high-performace liquid chromatographic method was developed for determination of Aloin and Isobarbaloin in rabbit blood. A HPLC system equipment, a Merk LiChrospher 100 RP-18e column with the mobile phase consisted of methanol-water (50:50) and UV detection wavelength at 359nm. The internal standard was 7-hydroxycoumarin and follow rate was 1.0ml/min.

并首先开发出在家兔体内血浆中二个指标成分之高效液相层析分析法，使用Merk LiChrospher 100 RP-18为层析管柱，移动相为甲醇与水（50：50），内部标准品为7-羟基香豆素，在检测波长359nm，流速1.0 ml/min下，分别定量血浆检品与进行确效性的评估。

The strang water conducted karstic collapse column is the important passage ,which should be attached importance to and studied on .

导水性极强的岩溶陷落柱是底板岩溶裂隙水的重要充水通道，必须加以重视和研究。

Limonin and nomolin from citrus fruits could be obtained to use No.2 solvent extracting in water bath for 60 minutes at 50℃, and identified and determined by TLC and HPLC effectively. The recovery of two components were 90.4% and 91.1% respectively. The HPLC analysis system included: C18 column (4.3mm ×25cm), the elution with methanol : acet...

柠檬苦素类化合物在抗癌、镇痛、调节体内胆固醇水平、防止动脉粥样化和除虫等方面的明显效应问，越来越受到人们的重视，所以，在功能食品、保健品以及

F. Nees and their metabolites by HPLC, the mobile phase was acetonitrile-water (0.1% methanoic acid) for gradient elution, Column temperature was 25℃, flow rate was 1.0mL/min, the detection wavelength was at 254nm..

采用HPLC对穿心莲及其代谢产物进行研究，以乙腈-0.1%甲酸水进行梯度洗脱，柱温为25℃，流速为1.0mL/min，检测波长为254nm。

Methods A LiChrospher RP-C_(18)(250 mm×4.6 mm,i.d.5μm)column was used and the mobile phase was acetonitrile-water (1.0% methanoic acid)for gradient elution.

采用LiChrospher RP- C_(18)(250mm×4.6mm，i.d.5μm)色谱柱，以乙腈-水(1.0%甲酸)为流动相，梯度洗脱，双波长检测。

The free fatty acids were extracted with petroleum ether and were separated on silicon gel column chromatography. The ethyl acetate-soluble lipid fraction and water-soluble lipid fraction were subjected to hydrochloric acid-catalyzed methanolysis, then were extracted with petroleum ether, respectively.

用石油醚提取低极性组分，经硅胶柱层析分离得到游离脂肪酸；用乙酸乙酯提取酯溶性神经酰胺及其衍生脂类，提取物和残余的水溶性脂类分别经盐酸甲醇解，水解产物再用石油醚提取。

The experiments were conducted in a distillation column simulator with sieve trays by using air and mixtures of liguid paraffine and water.

以空气和油、水混合物为介质，在冷模塔内进行筛板上气、液、液三相流动的操作工况及其转变的研究。

Results The optimum condition was μ-Bondapak C18 column with acetonitrile-water-0.05% phosphonic acid gradient elution system, 1.0ml min^(-1) flow rate, 267 nm. detection wavelength and 23~26℃ temperature. The analysis ended within 45 min.

结果 在色谱柱为μ-Bondapak C183.9mm×300mm，10μm；流动相A相为乙腈，B相为0.05%的磷酸水溶液；流速为1.0ml/min；检测波长是267nm及温度为23~26℃的条件下；经45min梯度洗脱，成功的分离分析了桂枝汤中的4个成分。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。