Kinetic separation of heavy metal ions with new alkylated 8-quinolinols and its application to the environmental analysis

新型烷基化8-羟基喹啉动力学分离重金属离子及其在环境分析中的应用

• 批准号: 03640485
• 负责人: OHASHI Kousaburo
• 金额: $ 1.28万
• 依托单位: Ibaraki University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03640485/
• 关键词: alkylated 8-quinolinol; solvent extraction; separation; Heavy metal; selectivity; equilibrium and kinetics; 長鎖8‐キノリノール; 抽出分離; 抽出平衡及び速度; 長鎖8ーキノリノ-ル; ガリウム(III); 分配定数; 疎水性; 抽出定数; 抽出速度; 鎖体の組成; 立体効果

The solvent extraction of Ga(III), Mo(VI), Zn(II) with alkylated 8- quinolinols such as 5-octyloxymethyl-8-quinolinol(HO_8Q), 2-methyl-5- octyloxymethyl-8-quinolinol(HMO_8Q) and 5-(4-nitrophenylazo)-7-(4-ethyl-1-methyloctyl)-8-quinolinol(HNEQ), which were newly prepared, was investigated to develop highly selective separation systems.1. Ga(III) was extracted with HO_8Q in heptane from weakly acidic solution as Ga(O_8Q)_3 (Kex = 10^<3.2>). On the other hand, in a case of HMO_8Q, the extracted complex was to be Ga(OH)(MO_8Q)_2 (Kex = 10^<-4.2>). Ga(III) was extracted with HO_8Q and HMO_8Q in heptane from weakly acidic solution containing chloride ion as Ga(O_8Q)_3 and Ga(Cl)(MO_8Q)_2, respectively.2. The rate determining steps of the extraction of Ga(III) with HO_8Q in heptane should be the competitive reactions of Ga^<3+> and Ga(OH)^<2+> with HO_8Q and/or H_2O_8Q in an aqueous phase. The extraction in chloroform is very slow comared with that in heptane.3. Mo(VI) was extracted with HO_8Q and HMO_8Q in chloroform from very strong acidic solution and separated from other metal ions such as Co(II),Fe(III) and Cu(II). The extraction constants were determined to be 10^<17.7> for MoO_2(O_8Q)_2 and 10^<14.9> for MoO_2(MO_8Q)_2 respectively.4. Pd(II) was extracted with HMO_8Q in chloroform from hydrochloric acid as Pd(MO_8Q)_2 (Kex = 10^<13.3>). The extracted complex in chloroform was back extracted with 0.3 M SCN^- solution at pH 3.0.The extraction rate is remarkably dependent on the kinds of solvents. Consequently, Pd(II) can be selectively separated from other metal ions by using the difference in the extraction rate and by the procedure of the back extraction.5. The synergistic extraction of Zn(II) with HNEQ was extracted. Zn(II) was found to be separated from Cd(II) with HNEQ.These results will be expected to apply to the separation of heavy metal ions.

研究了新合成的5-辛氧基甲基-8-羟基喹啉（HO_8Q）、2-甲基-5-辛氧基甲基-8-羟基喹啉（HMO_8Q）和5-（4-硝基苯偶氮）-7-（4-乙基-1-甲基辛基）-8-羟基喹啉（HNEQ）等烷基化8-羟基喹啉对Ga（III）、Mo（VI）、Zn（II）的溶剂萃取，建立了高选择性的分离体系.在弱酸性的正庚烷溶液中，用HO_8Q萃取Ga（III），得到Ga（O_8Q）_3（Kex = 10 ~（？<3.2>）在HMO_8Q的情况下，萃合物为Ga（OH）（MO_8Q）_2（Kex = 10^<-4.2>）。在正庚烷中，用HO_8Q和HMO_8Q从弱酸性含氯离子溶液中萃取Ga（III），分别得到Ga（O_8Q）_3和Ga（Cl）（MO_8Q）_2. HO_8 Q在正庚烷中萃取Ga（III）的速率决定步骤应为水相中Ga^3+和Ga（OH）^2+与HO_8 Q和/或H_2O_8 Q的竞争反应。在氯仿中的萃取比在庚烷中的萃取慢.用HO_8Q和HMO_8Q在氯仿中从强酸性溶液中萃取Mo（VI），使Mo（VI）与Co（II）、Fe（III）、Cu（II）等金属离子分离。测定了<17.7>MoO_2（O_8Q）_2和<14.9>MoO_2（MO_8Q）_2的萃取常数分别为10^和10^. Pd（Ⅱ）用HMO_8Q的氯仿溶液从盐酸中萃取，得到Pd（MO_8Q）_2（Kex = 10 ~（-1）<13.3>）。在氯仿中萃取的络合物用0.3M SCN ~-溶液在pH3.0条件下反萃取。萃取率显著地依赖于溶剂的种类。因此，Pd（II）可以通过利用萃取速率的差异和通过反萃取的程序与其它金属离子选择性地分离。研究了HNEQ对Zn（II）的协同萃取。用HNEQ对Zn（Ⅱ）和Cd（Ⅱ）进行了分离，这些结果可望应用于重金属离子的分离。

项目成果

T.AMIMOTO,H,IMURA,K.OHASHI: "High Selectivity in Solvent Extraaction of Molybdenum(VI)Dith Hydrophokic 8ーQuinolinds"

T.AMIMOTO,H,IMURA,K.OHASHI：“钼 (VI)Dith 疏水性 8-喹啉的溶剂萃取的高选择性”

大橋 弘三郎: "分析化学" 三共出版, 300 (1992)

大桥幸三郎：《分析化学》三共出版社，300（1992）

H.IMURA: "Selectivity in the Extraction. of Copper(II)with A New Alkylated 8-quinolinol Derivative with a Nitro-phenylazo Substituent" Anal. Sci.

H.IMURA：“用带有硝基苯基偶氮取代基的新型烷基化 8-羟基喹啉衍生物萃取铜 (II) 的选择性”。

H.IMURA: "Selectivity in the Extraction of Copper(II) with A New Alkylated 8-quinolinol Derivative with a Nitro-phenylazoSubstituent" Anal. Sci.

H.IMURA：“用带有硝基苯基偶氮取代基的新型烷基化 8-羟基喹啉衍生物萃取铜 (II) 的选择性”。

大橋 弘三郎 小熊 幸一 鎌田 薩男 木原 壮林: "分析化学" 三共出版, 310 (1992)

Kozaburo Ohashi、Koichi Oguma、Satsuo Kamata、Sorin Kihara：“分析化学” Sankyo Publishing，310（1992）