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ph电位
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  ph potential
     The complex formation reactions of thorium nitrate and sodium salt of EDTA with an amino acid (d-Val, dl-Ile, dl-Met, l-Gln, l-Pro) have been studied by the method of PH potential titration.
     用pH电位法研究了Th(NO_3)_4、乙二胺四乙酸二钠盐分别与d-缬氨酸,dl-异亮氨酸,dl-蛋氨酸,l-谷氨酰胺、l-脯氨酸在水溶液中的有关络合反应。
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  “ph电位”译为未确定词的双语例句
     pH-Electrometric Determination of Thermodynamical Parameters of Mn(Ⅱ),Co(Ⅱ),Ni(Ⅱ) Mandelate Complexes
     Mn(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)扁桃酸络合物热力学参数的pH电位法测定
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     A potentiometric study on binary and ternary complexes of L-threonine with Cu(II), Zn(II), Fe(II), Mn(II), Ca(II), Mg(II), Ni(II) and Cd(II) has been reported.
     本文报道了L-苏氨酸同Cu(II),Zn(II),Fe(II),Mn(II),Ca(II),Mg(II),Ni(II),Cd(II)的二元及三元配合物的pH电位法研究.
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     Potentiometric studies of o-phenylenediamine-N,N,N ̄I,N ̄I -tetrakis(methylenephosphonic acid)
     N,N,N~I,N~I-邻苯二胺四甲基膦酸与Zn、Cu配合物的pH电位法研究
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     The ternary complexes of Zn(Ⅱ) with Vitamin D_3 (VD_3) and some mini-molecules: Such as phenylalanine (phe), 1,10-phenanthroline (phen), or 2,2′-bipyridyl (bipy) have been studied by potentiometric pH titrations in a 70%(V/V) ethanol -water solution at 37±0.1℃ and 0.10 ionic strength (KNO_3).
     本文用pH电位法研究了锌(Ⅱ)与维生素D_3(VD_3)和2,2′—联吡啶(bipy),1,10—邻二氮菲(phen)或苯基丙氨酸(phe)在70%(V/V)乙醇—水溶液、温度为37±0.1℃和离子强度为0.10(KNO_3)条件下,形成三元混合配体配合物的稳定性。
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     the stability constants of the ternary mixed-ligand complexes Pt (A)(ATP) n- (A=Phen,Bpy,Trp;ATP=adenosine5'-triphosphate;n=2or 3)have been determined by potentiometric pH titration in dilute aqueous solution (I=0.1mol/L,KNO 3 ;25℃).
     用pH电位法测定了Pt(Ⅱ)与腺苷5'-三磷酸(ATP)的三元混配配合物Pt(A)(ATP)n-(杂环碱A=PhenBpyTrpn=2或3)在水溶液中的稳定常数(I=0.1mol/L,KNO3;25℃)。
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     , and Ph.
     ,Ph.
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     , Ph.
     ,Ph.
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     A Way of Drawing a Brief pH-Electric Potential Graph
     电位-pH图的简易制作
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     the scope of the E—pH of natural water;
     天然水电位——PH 范围;
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  ph potential
The stepwise stability constants of coordination compounds from sulfonated sheoak tannin with metal ions have been determined by pH potential method with catechol as model compounds at 20°C and constant ionic strength.
      


Equilibrium constants for the formation of Co2+,Ni2+,Cu2+,Zn2+ and Cd2+ bis-complexes of asparagine have been determined potentiometri-cally at an ionic strength of 0.1 and at 10°,15°,20°,25°,30℃.At all the temperatures studied,the Gibbs free energy changes increase in the Order Cu2+

Equilibrium constants for the formation of Co2+,Ni2+,Cu2+,Zn2+ and Cd2+ bis-complexes of asparagine have been determined potentiometri-cally at an ionic strength of 0.1 and at 10°,15°,20°,25°,30℃.At all the temperatures studied,the Gibbs free energy changes increase in the Order Cu2+

本文在不同温度和离子强度为0.1的条件下,以pH电位法分别测定了Co~(2+)、Ni~(2+)、Cu~(2+)、Zn~(2+)、Cd~(2+)与天门冬酰胺形成1:2络合物时的平衡常数。在所有测定的温度范围内,吉氏自由能变化的递变顺序为Cu~(2+)

The addition reaction of Ni (Ⅱ)-Iminodiacetic acid (IMDA) with HBG and the displacement reaction of Ni (Ⅱ)-Tartaric acid (Tart) with HBG as well as the complexation of Ni(Ⅱ) with HBG were studied by pH--metrically in aqueous solution at 30.0±0.1℃in the presence of 0.1M potassium chloride.The equilibrium constants of addition reaction and displacement reaction (k111 and k41),the over-all formation constants of two mixed-ligand complexes (β111) as well as the step-wise formation constants of Ni(Ⅱ)-HBG chelate...

The addition reaction of Ni (Ⅱ)-Iminodiacetic acid (IMDA) with HBG and the displacement reaction of Ni (Ⅱ)-Tartaric acid (Tart) with HBG as well as the complexation of Ni(Ⅱ) with HBG were studied by pH--metrically in aqueous solution at 30.0±0.1℃in the presence of 0.1M potassium chloride.The equilibrium constants of addition reaction and displacement reaction (k111 and k41),the over-all formation constants of two mixed-ligand complexes (β111) as well as the step-wise formation constants of Ni(Ⅱ)-HBG chelate (k101,k102) and the over-all formation constant of Ni(Ⅱ)-Tart chelate (β120) were determined.The results are summarized as follows;Ni(Ⅱ)-IMDA-HBG.lgk111 7.10,lgβ111 15.36;Ni(Ⅱ)-Tart-HBG :lg kr1 5.13,lgβ111 12.68,lgβ120 7.55;Ni(Ⅱ)-HBG: lgk101 9.07,lgk102 5.54,lgβ120 14.61.The pH titration curves,the stability of mixed-ligand complexes and Ni(Ⅱ)-HBG chelate as well as the possible chelated-form of Ni(Ⅱ)-Tart chelate in basic condition were discussed.

pH电位法研究了在0.1M KCl水溶液中(30.0±0.1℃)的镍(Ⅱ)-亚氨基二乙酸(IMDA)与N-邻羟基等基氯乙酸(HBG)的加合反应、镍(Ⅱ)-酒石酸(Tart)与HBG的取代反应以及镍(Ⅱ)-HBG的络合反应,并测得了Ni(Ⅱ)-IMDA-HBG加合反应平衡常数K_(111)、混合型络合物积累生成常数β_(111)和Ni(Ⅱ)-Tart-HBG取代反应平衡常数K_(r1)、混合型络合物积累生成常数β_(111)以及Ni(Ⅱ)-HBG络合物的逐级生成常数K_(101)、K_(102)、积累生成常数β_(102)和Ni(Ⅱ)-Tart络合物的积累生成常数β_(120)。其结果如下: Ni(Ⅱ)-IMDA-HBG体系 lgk_(111) 7.10,lgβ_(111)15.36 Ni(Ⅱ)-Tart-HBG体系lgk_(r1) 5.13,lgβ_(111)12.68,lgβ_(120)。7.55 Ni(Ⅱ)-HBG 体系 lgk_(101)9.07,lgk_(102) 5.54,lgβ_(102)14.61 讨论了pH滴定曲线、混合型络合物和Ni—HBG络合物的稳定性以及碱性范围Ni(Ⅱ)与...

pH电位法研究了在0.1M KCl水溶液中(30.0±0.1℃)的镍(Ⅱ)-亚氨基二乙酸(IMDA)与N-邻羟基等基氯乙酸(HBG)的加合反应、镍(Ⅱ)-酒石酸(Tart)与HBG的取代反应以及镍(Ⅱ)-HBG的络合反应,并测得了Ni(Ⅱ)-IMDA-HBG加合反应平衡常数K_(111)、混合型络合物积累生成常数β_(111)和Ni(Ⅱ)-Tart-HBG取代反应平衡常数K_(r1)、混合型络合物积累生成常数β_(111)以及Ni(Ⅱ)-HBG络合物的逐级生成常数K_(101)、K_(102)、积累生成常数β_(102)和Ni(Ⅱ)-Tart络合物的积累生成常数β_(120)。其结果如下: Ni(Ⅱ)-IMDA-HBG体系 lgk_(111) 7.10,lgβ_(111)15.36 Ni(Ⅱ)-Tart-HBG体系lgk_(r1) 5.13,lgβ_(111)12.68,lgβ_(120)。7.55 Ni(Ⅱ)-HBG 体系 lgk_(101)9.07,lgk_(102) 5.54,lgβ_(102)14.61 讨论了pH滴定曲线、混合型络合物和Ni—HBG络合物的稳定性以及碱性范围Ni(Ⅱ)与Tart可能的络合形式。

Some 12-molybdophates and sodium 12-molybdosilicate which have been used as water corrosion inhibitors were prepared.

制备了几种钼杂多酸盐作为水质缓蚀剂。缓蚀试验表明在pH为8.0—8.5时12-钼磷酸钠具有较好的缓蚀性能,另一方面,钼杂多酸盐的缓蚀能力和缓蚀机理既不同于单钼酸钠,也不同于单钼酸钠和磷酸盐的简单复合,故钼杂多酸盐有可能广泛地应用在工业上。从极化曲线和pH电位滴定结果,提出了钼杂多酸盐的缓蚀机理的初步见解,即钼杂多酸盐在碳钢表面形成Fe_n[PMoxOy]型或M_n[PFeMoxOy]型络合物保护膜。

 
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