萃取剂

Four extracting agents for Lanthanides/Actinides separation , dialkyldithiophosphinic acids, were synthesized from PSCl3 and alkyl halide by Grignard reaction, sulfuration and acidification.

以PSCl3和卤代烷为原料，经格氏反应、硫化和酸化合成了用于镧/锕分离的4个萃取剂——二烷基二硫代次膦酸，其结构经NMR，IR和MS表征。

Experimental results were processed and it was found that 1: 1 adduct of alcohol and extractant was formed in every extraction process.

结果表明：萃取剂中络合剂浓度越高，醇的分配系数越大；醇的分配系数受其水相平衡浓度的影响不显著。

A method for determination of basic nitrogen-containing compounds in mainstream smoke was established. In the condition of basic substance barium hydroxide powder and extractant chloroform, 18 basic nitrogen-containing compounds were analyzed by gas chromatography-selective ion monitored-mass spectrometry, such as pyridine, 2-methylpyridine, 2-methylpyrazine, quinoline and indole, etc.

在氢氧化钡碱性环境中，以三氯甲烷为萃取剂，采用气相色谱－选择离子监测－质谱法测定吡啶、2-甲基吡啶、2-甲基吡嗪、喹啉、吲哚等18种碱性含氮化合物。

The effects of pH value and phase ratio on the yield of capsaicin both in simulation system and real system were investigated.

在模拟体系和实际体系中均以正己烷和乙酸丁酯为萃取剂，考察了pH值和有机相/水相体积比对辣椒碱收率的影响。

Solvent extraction using crown compounds as extractants is one of the most important separation methods of cesium.

用冠醚化合物作为萃取剂从酸性废液中溶剂萃铯，是目前众多分离手段中最重要的方法之一。

Using water distilled the Dark Brown Pigment from Walnut epicarp in the sample of differend sampling point and same means dry .

对不同地方采集的核桃外果皮用同样的方法进行干燥后，以水为萃取剂，提取棕褐色色素并对其稳定性进行了测试和比较。

The extraction medicament used in extraction is mostly flammable, volatile and harmful to human body and the society.

其中萃取法所采用的萃取剂大多是易燃、易挥发而且对人体和社会都具有危害性。

Study on Improvement of Recovery of Gold and Silver from the Copper Dross Smelting in Reverberatory Furnace;2. After that, the copper in leach liquor can be extracted with the ternary extractant mainly containing P204, and the gold and silver in leach residue can be recovered by a process of cyanidation-replacement of Z.

为避免硫酸烧渣对环境的污染，以硫酸烧渣为原料，通过添加活性还原剂，用废硫酸直接还原浸出铁并制铁黄，而后用以P2 0 4为主体的三元萃取剂萃取回收浸液中的铜，用全泥氰化和锌粉置换工艺从浸渣中提取金银，较经济有效地回收利用了烧渣中的有价金属，铁、铜和金的回收率分别达到了 93。

Work 工作:(1) feasible process development for high-pure tetraalkyphosphonium salt as catalysts for polymerizations, potential sale 2-4 million us$;(2) simple and feasible preparation process for phosphonium salt as ionic liquids, biocides and phase transfer catalysts;(3) new and industrially feasible processes for highly sterically hindered alkylphosphines as catalyst ligands, these include tricyclohexyl-phosphine, phosphorinanes and dsmphos2,3- bis(9-phosphabicyclononylbutane;(4) sterically hindered dialkylphosphinic acid as new generation of co/ni extractant;(5) alkylphosphonium wittig reagents and the wittig reactions with them;(6) exploration of the application of borane chemistry in the synthesis of highly sterocally hindered organophosphines;(7) customer preparation of samples of a variety of organophosphorus compounds for customers all over the world.

用作高分子聚合反应催化剂的高纯度四烷基瞵盐的实用生产流程。产品销售前景 2-4 百万美元；(2)用作离子化液体，杀菌剂和相转移催化剂的烷基瞵盐的简单实用合成方法；(3)高位阻烷基磷化氢催化剂配体的工业实用合成路线的研究，这包括，三环己烷基磷， phosphorinanes 和 dsmphos 2，3-bis(9-phosphabicyclononylbutane ；(4)高位阻二烷基膦酸金属萃取剂的工业实用合成路线的研究；(5)烷基膦 wittig 反应试剂的研究；(6)硼化学在高位阻烷基磷化氢合成中的应用；(7)为世界各地提供顾客合成服务。

The oil content in recovered furfural of lube oil refining was determined by gravimetric method. The selected determination conditions of extracting agent petroleum ether, sample of the first/second fraction of vacuum distillation, corresponding oven temperature and drying time were 20 mL, 10 g,(93±2)℃/(103±2)℃ and 26 minutes respectively.

应用重量法对润滑油精制回收糠醛溶剂中油含量的测定方法进行了研究，选定的测定条件为：萃取剂石油醚的用量为20mL，试样的称取量以10g为宜，相应的烘箱温度控制在(93±2)℃/(103±2)℃，烘干26min。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。