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sodium tetraphenylborate     
相关语句
  四苯硼钠
     Sodium Tetraphenyl Borate: A New Type of Chemiluminescence Enhancer for Horseradish Peroxidase Catalyzed Oxidation of Luminol
     增强辣根过氧化物酶催化鲁米诺化学发光反应的新型增强剂四苯硼钠
短句来源
     What's more, we establish a system for determining potassium ions with RLST. In the B-R buffering solution, the reaction of Potassium and sodium tetraphenyl borate can form a scattering system which will greatly increase the intensity of Resonance light scattering.
     另外我们还建立了共振光散射比浊法测定钾离子的体系,在B一R缓冲溶液中,钾与四苯硼钠反应生成散射体系使共振光散射强度大大增强。
短句来源
     Sodium tetraphenyl borate enhances the light emission from the horseradish peroxidase catalyzed oxidation of luminol by hydrogen peroxide.
     报道了新型增强剂四苯硼钠对过氧化物酶催化鲁米诺-过氧化氢发光反应的增强作用,建立了流动注射化学发光测定或辣过氧化物酶(HRP)的新体系。
短句来源
     A kind of lidocaine drug FETS by the combination of ion sensitive field effect transistor (ISFET) and drug sensitive membrane was developed with sodium tetraphenyl borate as electric active materials,DBP as plasticizer with 5% of PVC of tetrahydrofuran solution deposited on the ISFET gate area.
     以四苯硼钠为电活性物质,邻苯二甲酸二丁酯为增塑剂与5%的聚氯乙烯四氢呋喃溶液混合,涂覆在离子敏感场效应晶体管(ISFET)的栅极上,制得一种对利多卡因响应的药物敏感离子场效应晶体管传感器(DrugFET)。
短句来源
     TTPB was determined by potentiometrically titrating excess sodium tetraphenyl borate with TTPB,using a saturated calomel electrode as reference and a [BF 4] - ion-selective electrode as indicator in Na 2CO 3-NaHCO 3 buffer solution. The optimum conditions were determined.
     研究了在Na2 CO3-NaHCO3缓冲体系下 ,以饱和甘汞电极为参比电极 ,氟硼酸根离子选择性电极为指示电极 ,用季盐溶液滴定过量四苯硼钠测定季盐含量的新方法 ,确定了最佳测定条件。
短句来源
  四苯硼酸钠
     Improvement of Determination of Potassium in Fertilizers-Gravimetric Sodium Tetraphenylborate Method
     四苯硼酸钠重量法测钾含量方法的改进
短句来源
     EVALUATION OF THE UNCERTAINTY OF MEASUREMENT IN THE DETERMINATION OF POTASSIUM CONTENT IN POTASSIUM CHLORIDE BY SODIUM TETRAPHENYLBORATE GRAVIMETRIC METHOD
     四苯硼酸钠重量法测定氯化钾中钾含量结果不确定度的评定探讨
短句来源
     Determination of potassium in the production of complex fertilizer was described by titration of trimethyl hexadecyl ammonium bromide with excessive sodium tetraphenylborate.
     确认了一种适用于复混肥料生产过程中钾含量的测定方法。 该方法用季胺盐 (十六烷基三甲基溴化铵 )溶液滴定过量的四苯硼酸钠溶液 ,检验时间 40min左右 ,比称量法缩短检验时间 3h。
短句来源
     The influencing factors of the uncertainty of measurement in the determination of potassium content in potassium chloride using sodium tetraphenylborate gravimetric method are discussed and the components of the uncertainty of measurement in the testing are analyzed and calculated. The standard uncertainty and the expanded uncertainty of potassium reported are 1. 7×10 and -3. 4×10-3 respectively, and the measurement results were expressed.
     讨论四苯硼酸钠重量法测定氯化钾中钾含量测量不确定度的影响因素,对测试过程中的测量不确定度分量进行了分析和计算,求出氯化钾中钾含量测量结果的标准不确定度为1.7×10~(-3),扩展不确定度为3.4×10~(-3),并对测量结果进行了表述
短句来源
     The C_(12)-2-C_(12)·2Br selective membrane electrode was prepared using a deposit of C_(12)-2-C_(12)·2Br and sodium tetraphenylborate as the electrical active compound and PVC as the membrane material. Over the range of 15~45 ℃,the detection limit for C_(12)-2-C_(12)·2Br was 1.5×10~(-6) mol·L~(-1).
     以四苯硼酸钠与季铵盐Gem in i表面活性剂(C12-2-C12.2B r)生成的沉淀物质作为电活性物质制备选择性膜(PVC)电极,在所考察的15~45℃内,膜电极对C12-2-C12.2B r水溶液的检测下限浓度为1.5×10-6mol.
短句来源
  四苯硼化钠
     Silica-supported Arsine Palladium(0) Complex Catalyzed Phenylation of Acid Chlorides and Aryl Iodides by Sodium Tetraphenylborate
     二氧化硅负载胂钯(0)配合物催化酰氯和芳基碘与四苯硼化钠的苯基化反应
短句来源
     The coordination reaction of sodium tetraphenylborate with four 4-phenylpolyenio acyl benzo 15-crown-5 and a phenyl acyl benzo 15-crown-5 forked conjugative compounds in 80% ethanol solution at 26℃ has been studied by thermal measurement.
     本文用量热法研究了四个4’-苯多烯酰基苯并-15-冠-5和一个4’-苯酰基苯并15-冠-5共五个三岔共轭化合物与四苯硼化钠在80%乙醇溶液中的配合反应热效应. 通过计算得出配合反应的表观平衡常数K,以及有关的热力学函数的改变量.
短句来源
  硫酸亚铊
     The oscillographic titration was applied to measure gabexate mesilate by sodium tetraphenylborate(NaTPB).
     在pH6.2的醋酸-醋酸钠缓冲液中,甲磺酸加贝酯能与四苯硼钠定量地产生沉淀,过量的四苯硼钠用硫酸亚铊标准液进行回滴定。
短句来源
     Sodium tetraphenylborate (Na TPB) is added to precipitate pefloxacin and ciprofloxacin in HAc NaAc buffer solution (pH=4.8). After filtering, the excess of TPB in the filtrate was titrated by substituting CTMAB standard solution, which was used instead of poisonous thallous sulfate as titrant. The disappearance of the incision of TPB on d E /d t=f(E ) curve was used to indicate the end point of the titration.
     在pH 4 .8HAc NaAc缓冲溶液中 ,培氟沙星和环丙沙星均能与四苯硼钠 (Na TPB)作用生成沉淀 ,干过滤后 ,用十六烷基三甲基溴化铵标准溶液代替在示波极谱滴定法中常用的有毒硫酸亚铊作为滴定剂 ,回滴滤液中过量的Na TPB ,由示波极谱图 [dE dt=f(E)曲线 ]上TPB的切口消失指示终点。
短句来源

 

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      sodium tetraphenylborate
    Palladium catalyzed cross-coupling of symmetrical diaryliodonium salts with sodium tetraphenylborate in water
          
    Solubility of sodium tetraphenylborate in solutions of NaCl, Na2NO3, Na2SO4, NaCl+MgCl2 at 25°
          
    Conductance data are presented for sodium tetraphenylborate (NaBPh4) in three solvent systems: water-dimethyl sulfoxide, water-acetone, and acetone-dimethyl sulfoxide.
          
    Ion pairing in solutions of sodium tetraphenylborate
          
    The addition of sodium tetraphenylborate (NaTPB) and various plasticizers viz.
          
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    The direct amperometric titration of amines with sodium tetraphenylborate solution based upon anodic depolarization at a dropping mercury electrode by the use of excess TPB titrant, was systematically investigated. The influence of various factors such as pH, volume of titration mixture, quantity of sample in a definite volume to be titrated were studied. Based upon the above observations, a method is proposed as follows: Pipette 0.5-2.0 ml (at a concentration of about 2×10~(-2)M) of samples of various...

    The direct amperometric titration of amines with sodium tetraphenylborate solution based upon anodic depolarization at a dropping mercury electrode by the use of excess TPB titrant, was systematically investigated. The influence of various factors such as pH, volume of titration mixture, quantity of sample in a definite volume to be titrated were studied. Based upon the above observations, a method is proposed as follows: Pipette 0.5-2.0 ml (at a concentration of about 2×10~(-2)M) of samples of various amines into a 50 ml beaker and add 1% HAc to make a volume of about 10-20 ml. The dropping mercury electrode serves as the polarographic anode. Titrate the amines with 0.05 M standard Na-TPB solution (pH 8) at 0.18 V using the saturated NaCl bridge and S.C.E. as reference. After each addition, stir for one minute and allow the solution to obtain a steady current value, then record the galvanometric reading. The end point is graphically plotted with current versus milliliters of titrant; sharp breaks are obtained. The Na-TPB solution was standardized volumetrically by the standard mer- curic solution. Organic bases so determined include aniline, methyl aniline, diethylamine, ephedrine hydrochloride, dimethylaniline, trimethylamine hydrochloride, triethylamine hydrochloride, urotropine, and tetraethylammonium iodide. The relative error of this method is 2%. The more soluble salts of aliphatic primary amines such as methylamine, ethyl- amine, n-butylamine, and even in the case of ephedrine hydrochloride could not be ac- curately titrated. The application of this method to titrate the amines depend largely upon the structure of the amines and the solubility of amine-TPB salts. This method was also successfully applied to titrate the nitrogen containing drugs such as chlopromarzine, cinchophene, quinine sulphate, atropine sulphate, antipyrine, aminopyrine, rivanol, and strychnine.

    本文研究了用pH8的四苯硼酸钠水溶液对胺类的直接电流滴定法.滴汞为阳极,饱和甘汞为阴极,以3%琼脂的饱和NaCl溶液为盐桥组成电解池.适宜的滴定条件是:外加电压+0.18伏;底液为pH 2-3的HAc-NaAc介质,而以1%HAc更为方便;滴定体积为10-20毫升.可测的浓度范围和胺类的四苯硼酸盐沉淀的溶解度有关:仲胺为1×10~(-3)-2×10~(-2M);叔胺为6×10~(-4)-2×10~(-2)M;季胺为4×10~(-4)×10~(-3)M;伯胺类不能测定.方法的相对误差因沉淀的溶解度而异,一般在2%以下.滴定时沉淀可不必分离,且无需除氧,操作步骤比较简易.

    In this paper, it is shown that a c oscillopolarographic titration can be applied advantageously to titrate neostigmine methyl sulfate by sodium tetraphenylborate(NaTPB).NaTPB is added to precipitate quantitatively, neostigmine methyl sulfate from aqueous solution. Filter part of the mixture, and the excess of NaTPB in the filtrate is titrated by thallous sulfate standard solution, using the disappearance of the incision of NaTPB on dE/dt—E curve to indicate the end point of titrations. The recovery was...

    In this paper, it is shown that a c oscillopolarographic titration can be applied advantageously to titrate neostigmine methyl sulfate by sodium tetraphenylborate(NaTPB).NaTPB is added to precipitate quantitatively, neostigmine methyl sulfate from aqueous solution. Filter part of the mixture, and the excess of NaTPB in the filtrate is titrated by thallous sulfate standard solution, using the disappearance of the incision of NaTPB on dE/dt—E curve to indicate the end point of titrations. The recovery was 99.3~100.2%. Ten determinations on the same samplegave a relative standard deviation of ±0.42%. The method is accurate, rapid and Simple, much superior to the official method adopted now.

    交流示波极谱滴定可有效地应用于四苯硼钠滴定甲基硫酸新斯的明。先加入四苯硼钠,使之与新斯的明产生沉淀,然后以硫酸亚铊标准溶液滴定多余的四苯硼钠。以dE/dt—E曲线上四苯硼钠切口的消失为终点。用此法测定了注射液中新斯的明含量,回收率为99.3~100.2%,十次测定的相对标准偏差为0.42%。远较药典方法方便、快速。

    A PVC membrane sodium ion-selective microelectrode based on a neutral carrier(ETH 1097)has been constructed. The tip diameters of around 2. 5μm as well as the selectivity coefficients in respect to K~+,Mg~(2+)and Ca~(2+)allow the intracellular measurement of sodium ion activities. The response is linear in the range 10~(-3)to 5×10~(-1)M Na~+ giving a slope of 58. 2 mV(25'℃). The performance of electrode plasticized by dibutylsebacate (DBS)has been compared with that of electrode plasticized by dioctylphthalate(DOP)....

    A PVC membrane sodium ion-selective microelectrode based on a neutral carrier(ETH 1097)has been constructed. The tip diameters of around 2. 5μm as well as the selectivity coefficients in respect to K~+,Mg~(2+)and Ca~(2+)allow the intracellular measurement of sodium ion activities. The response is linear in the range 10~(-3)to 5×10~(-1)M Na~+ giving a slope of 58. 2 mV(25'℃). The performance of electrode plasticized by dibutylsebacate (DBS)has been compared with that of electrode plasticized by dioctylphthalate(DOP). The change in performance caused by adding sodium tetraphenylborate(NaTBP)or NaSCN to membrane has been studied. The sensitive membrane containing DBS and appropriate amount of NaTPB is suitable for intracellular measurements.

    研制了以中性载体(ETH1097)为电活性物质的PVC钠离子选择性微电极。电极尖端直径小至2.5μm,线性响应范围10~(-3)-5×10~(-1)MNa~+,检测下限1.2×10~(-4)M,斜率为58.2mV(25℃).对K~+,Mg~(2+)、Ca~(2+)的选择性系数分别为0.050,6.5×10~(-4)及5.5×10~(-3)。该微电极特别适用于细胞内钠离子活度的测量。实验探讨和比较了癸二酸二丁酯(DBS)和邻苯二甲酸二正辛酯(DOP)为增塑剂的钠微电极的性能。研究了四苯硼钠(NaTPB)和硫氰酸钠(NaSCN)加入膜中后,电极性能的变化。为用于细胞内及临床微量试样中钠离子活度测量,电极采用DBS为增塑剂,并加入适量的NaTPB较宜。

     
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