{"title":"苦味酸萃取苯法测定水中MA+离子(M = Ca, Sr, Ba, Cu, Cd)与A-苦味酸离子的离子对形成常数","authors":"Y. Kudo, S. Nakajima, N. Horiuchi","doi":"10.6000/1929-5030.2016.05.02.2","DOIUrl":null,"url":null,"abstract":"Ion-pair formation constants ( K MA 0 ) for MA + = MPic + and MCl + in water were determined at 298 K and ionic strength → 0 by extraction experiments of picric acid (HPic) in the presence of M(II) in the water phase into benzene (Bz) and by potentiometry with a commercial Cl - -selective electrode, respectively. Here, M denotes Ca(II), Sr(II), Ba(II), Cu(II), and Cd(II). In adding Pb(II) data, a relation between K MA 0 values was K MCl 0 <K MPic 0 for a given M(II).For CdPic + , the K MA 0 value (= 136mol -1 dm 3 ) determined by the HPic extraction was somewhat larger than that (= 108) potentiometrically-determined before with a Cd 2+ -selective electrode, while for CaPic + the former value (= 89) equaled the latter one (= 88) determined before with a Ca 2+ -selective electrode.","PeriodicalId":15165,"journal":{"name":"Journal of Applied Solution Chemistry and Modeling","volume":"10 1","pages":"71-75"},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Determination of Ion-Pair Formation Constants for MA+ Ions (M = Ca, Sr, Ba, Cu, Cd) with A- = Picrate Ion in Water by Picric Acid Extraction into Benzene\",\"authors\":\"Y. Kudo, S. Nakajima, N. Horiuchi\",\"doi\":\"10.6000/1929-5030.2016.05.02.2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Ion-pair formation constants ( K MA 0 ) for MA + = MPic + and MCl + in water were determined at 298 K and ionic strength → 0 by extraction experiments of picric acid (HPic) in the presence of M(II) in the water phase into benzene (Bz) and by potentiometry with a commercial Cl - -selective electrode, respectively. Here, M denotes Ca(II), Sr(II), Ba(II), Cu(II), and Cd(II). In adding Pb(II) data, a relation between K MA 0 values was K MCl 0 <K MPic 0 for a given M(II).For CdPic + , the K MA 0 value (= 136mol -1 dm 3 ) determined by the HPic extraction was somewhat larger than that (= 108) potentiometrically-determined before with a Cd 2+ -selective electrode, while for CaPic + the former value (= 89) equaled the latter one (= 88) determined before with a Ca 2+ -selective electrode.\",\"PeriodicalId\":15165,\"journal\":{\"name\":\"Journal of Applied Solution Chemistry and Modeling\",\"volume\":\"10 1\",\"pages\":\"71-75\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Applied Solution Chemistry and Modeling\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.6000/1929-5030.2016.05.02.2\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Applied Solution Chemistry and Modeling","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.6000/1929-5030.2016.05.02.2","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
摘要
在298 K和离子强度→0条件下，分别用苦荞酸(HPic)在M(II)存在的水相中萃取成苯(Bz)和商用Cl -选择电极电位法测定了水中MA + = MPic +和MCl +的离子对形成常数(K MA 0)。其中，M表示Ca(II)、Sr(II)、Ba(II)、Cu(II)、Cd(II)。在添加Pb(II)数据时，对于给定的M(II)， K MA 0值之间的关系为K MCl 0 本文章由计算机程序翻译，如有差异，请以英文原文为准。
Determination of Ion-Pair Formation Constants for MA+ Ions (M = Ca, Sr, Ba, Cu, Cd) with A- = Picrate Ion in Water by Picric Acid Extraction into Benzene
Ion-pair formation constants ( K MA 0 ) for MA + = MPic + and MCl + in water were determined at 298 K and ionic strength → 0 by extraction experiments of picric acid (HPic) in the presence of M(II) in the water phase into benzene (Bz) and by potentiometry with a commercial Cl - -selective electrode, respectively. Here, M denotes Ca(II), Sr(II), Ba(II), Cu(II), and Cd(II). In adding Pb(II) data, a relation between K MA 0 values was K MCl 0
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