游离碱

EDTA络合滴定与酸碱滴定联合测定含锌碱性溶液中游离碱、锌和碳酸钠

Determination of free alkali , zinc and sodium carbonate in zinc aqueous alkali by uniting EDTA complexometric titration and acid base titration

膜电解法回收钨酸钠溶液中游离碱工业试验研究

Pilot trial on free alkali recovery from sodium tungstate solution by electrolysis with ion-exchange membrane

用EDTA测定溶液中锌含量，最后利用盐酸和EDTA的消耗量联合计算含锌碱性溶液中游离碱和碳酸钠量。

The concentrations of free alkali and sodium carbonate were calculated with the consumption of hydrochloric acid and EDTA standard solution .

方法：静脉给予家兔琥珀酸罗哌卡因和盐酸罗哌卡因（按罗哌卡因游离碱计均为6.3mg/kg）后，用HPLC法测定血清中的罗哌卡因游离碱含量，进行药物的生物等效性比较。

Methods A single intravenous dose of 6 3 mg / kg ( free base of ropivacaine ), ropivacaine chelidoninic acid or ropivacaine hydrochloride was given to rabbits . The plasma concentrations were determined by HPLC .

N8原子可能以游离碱形式与受体发生氢键作用。

N8 atom could form H-bond to the acceptor as a free base .

结果表明，反应物一氯乙酸不易过量，但反应体系中要保持一定的游离碱的浓度才能得到高取代度的CMC；

In order to get CMC with high DS , the quantities of chloroacetic acid is not excessive , however , in the reaction system the quantities of NaOH is high so as to maintain the concentration of free NaOH .

结果表明，在冰醋酸中H2POH和H2（p-Cl）3POH均以二酸和游离碱的形式存在；

The experimental results show that H 2 POH and H 2 ( p_Cl ) 3 POH exist in equilibrum between the diacid form and the free base .

利用电导实验技术，跟踪观察弱酸性树脂吸附低浓度游离碱的行为，研究温度对吸附的影响，测定吸附活化能（Ea）和吸附剂-吸附质相互作用能（U）。

The behavior of adsorption of low concentration free base by weak acidic resin was followed by conductivity technique . The effect of temperature on adsorption was studied , adsorbed activation energy ( E a ) and interaction energy of adsorbent adsorbate ( U ) were determined .

研究了溶媒法合成聚阴离子纤维素（PAC）过程中游离碱浓度、氯乙酸钠水解率和产品取代度（DS）及其溶液粘度与反应条件的相关性。

The dependence of concentration of free sodium hydroxide , hydrolyzation ratio of sodium chloroacetate , degree of substitution ( DS ) and solution viscosity of product on reaction conditions in the synthesis of polyanionic cellulose ( PAC ) in various alcohol mediums are studied .

D101大孔树脂能从pH2-3的博落回盐酸提取液中以游离碱形式全部吸附其生物碱，分别采用50%乙醇和丙酮洗脱能有效地将极性和弱极性生物碱分离开来。

All alkaloids in the hydrochloric acid solution of pH2-3 were abstracted in the form of free base , and that the polar alkaloids and weak polar alkaloids were separated by means of 50 % ethanol elution and acetone respectively .

电渗析法脱除粗钨酸钠中的游离碱研究

A Study on Eliminating Educt Alkali from Coarse Sodium Tungstate with Electrodialysis Method

次氯酸钠溶液中游离碱含量的测定

Determination of free alkali content in sodium hypochlorite solution

弱酸性树脂吸附低浓度游离碱行为的研究

Study on the Adsorption of Free Base at Low Concentration by Weak Acidic Resin

能有效中和洗涤过程中未除净的游离碱，游离氯，使织物易于上浆。

Can be effective in the washing process and not a net addition to the free base , free chlorine , so easy fabric sizing .

介绍了有关次氯酸钠溶液中游离碱含量测定的许多有益的尝试及其达到的预期效果。

A lots of effective attempts and desired results achieved , relating to determination of free alkali content in sodium hypochlorite solution , are introduced .

该盐同嘌呤霉素游离碱具有相同的药理学性质，它的高度的水溶性能给体外研究应用提供一些优势。

While the salt shares the same pharmacological properties as puromycin free base , its greater water solubility may offer advantages in some in vitro applications .

研究表明：一价阴离子选择膜电渗析法从粗钨酸钠溶液中脱除游离碱是经济可行的。

It has been proved that it is economical and feasible to eliminate educt alkali from coarse sodium tungstate with electrodialysis method of negative ion ( 1 ) selective membrane .

酸式盐是一种更便于使用的形式；在实际应用中，使用盐形式与使用游离碱形式的量相等。

Acid addition salts are a more convenient form for use ; and in practice , use of the salt form inherently amounts to use of the free base form .

以氯气和氢氧化钠为原料制备次氯酸钠溶液，控制其中游离碱含量在10.8%左右，有效氯在8.0%左右。

Sodium hypochlorite solution has been prepared by chlorine and sodium hydroxide , the content of free alkali should be controlled at about 10.8 % , and the effective chlorine at about 8.0 % .

从碱渣来源分析碱渣污染物特征和游离碱浓度，提出用硫化氢废气中和碱渣回收粗酚、硫化碱的处理工艺。

According to source of alkaline residue , its pollutant specificity and free-alkaline concentration were analyzed . A treatment process to reclaim phenol and neutralize sodium sulfide with hydrogen sulfide gas and alkaline residue was put forward .

次氯酸钠消毒液在室温下自然存放9个月后有效氯含量下降率为15.5%~48.5%，但游离碱含量变化不大。

After the sodium hypochlorite disinfection solution was stored at room temperature for 9 months , its available chlorine content decreased by 15.5 % ~ 48.5 % , but there was no significant change in free base content .

结论市售次氯酸钠消毒液有效氯含量存在不合格现象，游离碱含量超标明显，但有害金属离子均不超标。

Conclusion There was ineligible phenomenon in available chlorine content of sodium hypochlorite disinfection solution sold in market , its free base content obviously exceeded allowable limit , but the harmful metal ions did not exceed the allowable limits .

游离的碱金属直接和水中作用，放出氢气。

The free alkali metals react immediately with water to liberate hydrogen .

改进混合酸法测定高锰酸钾生产中游离总碱

An Improved Mixed Acid Titration for Determination of Total Free Basicity in the Production of Potassium Permanganate

对于水难溶游离有机碱的盐酸盐可采用水&乙醇混合溶剂中的线性滴定法，因此，其共轭酸的稳定常数为10~3～10~（10）的大部分盐酸盐均可滴定。

With Stability constants of their conjugate acids ranging from 10 ~ 3 to 10 ~ ( 10 ), most of the hydrochlorides can be titrated .

阿霉素所致大鼠损伤心肌中游离肉毒碱含量的测定

Effects of Chronic Adriamycin Treatment on Carnitine Content of Rat Heart

酶联荧光法测定血浆游离肉毒碱

Determination of plasma free carnitine levels by Enzyme Fluorescence Method

润滑脂中游离酸、游离碱不溶性碳酸盐含量测定方法

Testing method for of free acid , free alkali and insoluble carbonate in lubricating grease

固定化细胞在柠碱浓度达到30mg/kg后，柠碱降解速度趋于饱和，而游离细胞的柠碱浓度则为35mg/kg；

Debittering rate came to a saturation with limonin concentration of 30 mg / kg for the immobilized cells while for the free cells with the concentration of 35mg / kg .