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二苯胍
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  diphenyl guanidine
     Most of thorium was removed from the title ore in the 6V/V% HCl solution using cupferron—choroform, and uranium and remainder thorium eliminated from 10 V/V% HCl solution by diphenyl guanidine(DPG)—Arsenazo Ⅲ—n-butanol.
     试验了在6%(V/V)HCl中用铜铁试剂—氯仿除去大部分钍,在10%HCl(V/V)中用二苯胍—偶氮胂Ⅲ—正丁醇除尽钍铀;
短句来源
     Studies on Extraction Spectrophotometry of Ternary Molybdenum(Ⅵ) 4 (5 Bromo 2 Thiazolylazo) Pyrocatechol Diphenyl Guanidine Ion Associate
     钼(Ⅵ)-4-(5-溴-2-噻唑偶氮)邻苯二酚-二苯胍三元离子缔合物的萃取分光光度研究
短句来源
     4-(2-Benzothiazolylazo)pyrocatechol (BTAPC), a new chromogenic reagent recently synthesized by the authors, was used to form the colored ternary complexes under optimum conditions with traces of Mo(VI) and W(VI) in the presence of diphenyl guanidine.
     以笔者新近合成的新有机试剂4-(2-苯并噻唑偶氮)邻笨二酚(BTAPC)为显色剂,在二苯胍存在下,与痕量钼(VI)、钨(VI)在最佳条件下形成三元有色配合物。
短句来源
     in this paper, the technology of producing diphenyl guanidine is investigated. Diphenyl guanidine is prepared by diphenylthiourea, zinc oxide using as desulphurizator, liquid ammonia as aminator, and under the pressure of 0.2 ~ 0.3 M Pa.
     对二苯胍的制备工艺进行了研究,即用氧化锌作脱硫剂,在 0. 2~ 0. 3 M Pa的压力下,由 N,N'-二苯基硫脲合成二苯肌。
短句来源
     A system of H_2SO_4-Na_2SO_4-Te-diphenyl guanidine-polyvinyl alcohol has been developed to determine microamounts of rhenium in ores by single-sweep oscillopolarography, which the optimum determination condition of the sysem is composed of (in 10ml solution) H_2SO_4(1+1) 4.5ml, Na_2SO_4 0.2g, hydroxylamine sulphate 0.1g, VC 0.14g, Te 2.0μg, diphenyl guanidine (0.1%) 0.5ml, polyvinyl alcohol (0.1%) 0.2ml.
     在单扫描示波极谱法测定矿石中微量铼的硫酸-硫酸钠-碲-二苯胍-聚乙烯醇体系中,最佳测试条件为10ml体积中含有硫酸(1+1)4.5ml,硫酸钠0.2g,硫酸羟胺0.1g,VC0.14g,碲2.0μg,0.1%二苯胍0.5ml,0.1%聚乙烯醇0.2ml。
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  diphenyl-guanidine
     Studies on Synergistic Extraction of Ho~(3+) with HPMBP and Diphenyl-Guanidine
     HPMBP和二苯胍对Ho~(3+)的协同萃取机理研究
短句来源
     This paper reported a synergistic extraction of Ho 3+ with binary systems containing HPMBP and diphenyl-guanidine(DPG) using chloroform as diluent from nitric acid medium.
     研究了 1-苯基 - 3-甲基 - 4 -苯酰基吡唑酮 - 5(HPMBP)和二苯胍 (DPG)的三氯甲烷溶液对硝酸介质中Ho3+萃取机理。
短句来源
     Gold(Ⅲ ) reacts with meso-tetra-(4-trimethylammoniumphenyl)porphyrin and diphenyl-guanidine to form a ternary complex at pH 10. 3 in the presence of Cd( Ⅱ ) as catalyst.
     研究了Cd(Ⅱ)作催化剂,Au(Ⅲ)与T(4-TMAP)P和二苯胍形成三元络合物的条件,Au(Ⅲ)含量4~200ng/ml内呈线性关系,ε_(410)=6.62×10~5L·mol~(-1)·cm~(-1)。
短句来源
     Reexposition of Making Diphenyl-guanidine by Oxygen Oxidizing Process
     再论氧气法制二苯胍
短句来源
     The Third Discussion on the Preparation of Diphenyl-guanidine by Oxygen Oxidizing
     三论氧气法制二苯胍
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  “二苯胍”译为未确定词的双语例句
     (Ln=Eu,Gd; Q = Et_4N~+, Pip and Dpg; S=H_2O, TPPO, Phen and Dpy).
     Q=Pip、N(C_2H_5)_4,+Dpg(二苯胍);
短句来源
     DERIVATIVE ABSORPTION SPECTRA OF THE SYSTEM OF LANTHANIDES (Nd~(3+), Ho~(3+), Er~(3+))--1-PHENYL-3-METHYL-4-BENZOYLPYRAZOLONE-[5]--DIPHENYLGUANIDINE AND ITS ANALYTICAL APPLICATION
     镧系(Nd~(3+),Ho~(3+),Er~(3+))-1-苯基-3-甲基-4-苯甲酰基吡唑酮-[5]-二苯胍系统的导数吸收光谱及其分析应用
短句来源
     STUDIES ON PREPARATION AND HYPERSENSITIVE TRANSITION OF THE TERNARY COORDINATION COMPOUNDS OF LANTHANIDE IONS(Nd~(3+)、HO~(3+))WITH 1-PHENYL-3-METHYL-4-TRIFLUOROACETYLPYRAZALONE-5 AND DIPHENYLGUANIDINE
     镧系离子(Nd~(3+)、Ho~(3+))同1-苯基-3-甲基-4-三氟乙酰基吡唑酮-5和二苯胍三元配合物的制备和超灵敏跃迁的研究
短句来源
     Study on the Polarographic Catalytic Wave of Vanadium-2-(3,5-Dibrorno-2-Pyridylazo)-5-Diethylaminophenol-Diphenylquanidine-Sodiurn Brornate system
     钒-2-(3,5-二溴-2-吡啶偶氮)-5-二乙氨基酚-二苯胍-NaBrO_3体系极谱催化波的研究
短句来源
     A new catalytic polarographic system for successive determination of W and Mo has been presented, The best constituent of a solution of 0.24M H_2SO_4-1.05×10~(-4)M benzilic acid-1.6×10~(-3)% phenylquanidine-0.13M KClO_3 is selected as supporting electrolyte.
     在0.24mol/L硫酸-1.05×10~(-4)mol/L二苯羟乙酸-1.6×10~(-3)%二苯胍-0.13mol/L氯酸钾底液中,钨和钼有一灵敏的平行催化波。 可用于痕量钨和钼的连续测定。
短句来源
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  diphenyl guanidine
The effect of added N,N'-diphenyl guanidine on the spinning process and static charge of acetate yarn
      


This paper reports the polarographic behavior of the complex of Y3 + with basic dye rhodamine B.Near -1.5V (SCE) rhodamine B has a large adsorptive single sweep polarographic wave in the presence of ammonium chloride and diphenylg-uanidine. Y3+ decreases the height of this derivative wave. Under the optimum conditions, such as 0.4.M ammonium chloride, 8.0×10-5M rhodamine B, 1.0×10-4M diphenylguanidine, pH 4.5-5.0, there is a linear relationship between 1 × 10-7 - l×10-6M Y3+ and the decrease of the wave heights....

This paper reports the polarographic behavior of the complex of Y3 + with basic dye rhodamine B.Near -1.5V (SCE) rhodamine B has a large adsorptive single sweep polarographic wave in the presence of ammonium chloride and diphenylg-uanidine. Y3+ decreases the height of this derivative wave. Under the optimum conditions, such as 0.4.M ammonium chloride, 8.0×10-5M rhodamine B, 1.0×10-4M diphenylguanidine, pH 4.5-5.0, there is a linear relationship between 1 × 10-7 - l×10-6M Y3+ and the decrease of the wave heights. Heavy rare earth elements behave similarly as Y3 + , thus the total amount of them may be determined.The mechanism of this system has been studied by means of dc, dpp, single sweep normal and derivative polarographys. The results indicated that Y3+ may form an ion-association complex with rhodamine B and diphenylguanidine as shown in the following.The complex adsorbs strongly and occupies the partial surface area of the mercury drop. The complex reduces at more negative potential than rhodamine B, thus the wave height of rhodamine B itself decreases correspondingly. The two steps can't be separated In dc and single sweep normal polarograms and they interfere each other in dpp owing to the slow scan rate of pulse polarograph, there is no good linear: relatjonskip between the concentration and wave height. A sensitive wave only exists in the single sweep derivative polarography.

本文探讨了Y~(3+)与碱性染料罗丹明B络合物的极谱行为。 在NH_4Cl底液中,二苯胍存在下,罗丹明B在-1.50伏(SCE)附近有一个大而稳定的极谱吸附还原波,Y~(3+)使示波导数波降低。在最佳实验条件下,在1×10~(-7)-1×10~(-6)M的范围内Y~(3+)浓度与波高降低有良好线性关系。重稀土行为相似,可能用于测定重稀土总量。 通过i-t曲线,循环伏安图、比较dc、dpp、示波极谱常规波和导数波,研究了体系的还原机理。Y~(3+)与罗丹明B和二苯胍可能形成离子缔合络合物,强烈吸附并占据滴汞表面。络合物在罗丹明B还原波后还原,致使罗丹明B本身的波降低。在dc和示波常规波中。两波不能分开,在dpp中因电压扫描慢,无良好线性关系。只有在示波导数波上表现为一种灵敏的极谱波。

The polarographic behavior of rare earths with rhodamine B in ammonium chloride solution has been further studied with Sm3+ as an another example. (1) In the presence of a small amount of diphenylguanidine, the addition of Sm3+ decreases the height of the adsorptive single-sweep derivative wave( -1.45V, SCE) as in the case of Y3 + does[1] There is a linear relationship between the concentration of 3×10-7-2×10-6M Sm3+ and the decreases of wave heights. (2) In the ammonium chloride solution with 10% dioxane, the...

The polarographic behavior of rare earths with rhodamine B in ammonium chloride solution has been further studied with Sm3+ as an another example. (1) In the presence of a small amount of diphenylguanidine, the addition of Sm3+ decreases the height of the adsorptive single-sweep derivative wave( -1.45V, SCE) as in the case of Y3 + does[1] There is a linear relationship between the concentration of 3×10-7-2×10-6M Sm3+ and the decreases of wave heights. (2) In the ammonium chloride solution with 10% dioxane, the complex of Sm3 + -rhodamine B exhibits a reductive dc pola-rogram at -1.70V (SCE). The wave height is directly proportional to the concentration of Sm3 + within the range of 2×10-6-2×10-5M. Since the adsorptive wave of rhodamine B precedes the complex wave, it is hard to further increase the sensitivity either by dc or single-sweep polarography. A comparison of RE-rhodamine B complexes in dioxane was made in which Eu is more sensitive than Sm and Er is the most sensitive one among them.

在单扫示波极谱仪上,罗丹明B在氯化铵底液中(0.4M)的导数波(-1.45V,SCE)是一个吸附波,加入Sm~(3+)能降低它的波高,二苯胍(1×10~(-4)M)的存在使罗丹明B(8.4×10~(-5)M)的波形稳定,Sm~(3+)浓度为3×10~(-7)—2×10~(-3)M时,浓度与波峰的降低呈线性关系。 在直流极谱仪上,在有二氧六圜存在的氯化铵底液中,钐(Ⅲ)-罗丹明B络合物在-1.7V(SCE)有一个吸附还原波。在最佳条件下(0.1M氯化铵,4.2×10~(-5)M罗丹明B和10%二氧六圜,pH=5.0),在浓度为2×10~(-6)—2×10~(-5)M范围内,波高与Sm~(3+)浓度有正比关系。 比较了稀土-罗丹明B在二氧六圜中的极谱波,销比钐灵敏,铒最灵敏;但是罗丹明B的吸附波妨碍了在它后面的络合物波的灵敏度进一步提高。

The catalytic system Sc~(3+)-NH_4Cl-Cupferron (Cup)-diphenylguanidine (DPG) suggested by Yao et al gives a sensitive derivative wave in single sweep polarograph. The linear relationship between the wave hights Hw and the conoentration of Sc~(3+) in the range of 10~(-7)~10~(-6)M has been used successfully in the ores analysis for Sc. We compared the waves in single sweep polarograph with that in the de polarograph and applied several electrochemical methods to investigate the mechanism of this wave. The experiments...

The catalytic system Sc~(3+)-NH_4Cl-Cupferron (Cup)-diphenylguanidine (DPG) suggested by Yao et al gives a sensitive derivative wave in single sweep polarograph. The linear relationship between the wave hights Hw and the conoentration of Sc~(3+) in the range of 10~(-7)~10~(-6)M has been used successfully in the ores analysis for Sc. We compared the waves in single sweep polarograph with that in the de polarograph and applied several electrochemical methods to investigate the mechanism of this wave. The experiments of electrooapillary curves, variation of the height of the mercury column and the time of the rest period before scanning, the temperature coefficent, cyclic voltammetry etc. indicated that the wave is adsorptive complex in nature and the ligand-Cupferron in the complex is catalytically reduced but not the cation Sc~(3+), therefore we call such catalytic wave as "adsorptive-complex wave". By applying the equation derived in our previous work, the composition of the adsorptive complex Sc~(3+): Cl~-: Cup: DPG is determined to be 1:2:1:1 with the conditional stability constant ;β=1.22×10~7 and the structural formula The electrode processes are described with the following steps: (1) complex formation of Sc~(3+) with Cup and DPG; (2) adsorption of the complex on the surface of the electrode; (3) dissociation of the complex and the reduction of Cup on the surface of the electrode: (4) repeat of the steps 1 to 3 to yield the adsorptive-complex catalytic wave.

在示波极谱上,在氯化铵底液中,pH4~7时,Sc~(3+)-铜铁试剂(Cup)-二苯胍(DPG)体系产生一个较大的催化波,在1×lO~(-7)~1×lO(-6)M Sc~(3+)浓度内与波高有线性关系,而在dc极谱上不产生催化波.此波为络合吸附波,络合物在电极上的吸附平衡不能瞬时达到.络合物组成为:Sc~(3+):Cup:DPG:CL~-=1:1:1:2,它具有八面体构型.在实验条件下,条件稳定常数β=1.22×10~7.四元络合离子吸附于电极表面,络合物中的Cup以酸形式在电极上还原,产物为苯肼;释出的Sc~(3+)可以再络合、吸附,产生催化电流.

 
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