双吡唑啉酮-硼酸钾萃取金属。

Solvent extraction of metals with potassium-dihydro-bispyrazolyl-borate.

机构信息

Department of Chemistry, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India.

出版信息

Talanta. 2002 Jun 10;57(4):633-9. doi: 10.1016/s0039-9140(02)00080-2.

Abstract

The extraction of Cu(II), Ni(II), Co(II), Cd(II), Zn(II), Pb(II) and Mn(II) with potassium-dihydro-bispyrazolyl-borate (H(2)BPz(2)(-)) in dichloromethane has been studied. Extraction constants (logK(ex)) have been calculated for all metal systems and were compared with those obtained with dibenzoylmethane (DBM), thenoyltrifluoroacetone (HTTA) and 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone (HPMBP). The method has been used for the determination of Cu(II), Co(II), Cd(II), Zn(II), Pb(II) and Mn(II) in standard alloys and for preconcentration of metal ions in synthetic samples.

摘要

本文研究了二氯甲烷溶液中二氢双（吡唑基）硼酸（H(2)BPz(2)(-))对 Cu(II)、Ni(II)、Co(II)、Cd(II)、Zn(II)、Pb(II)和 Mn(II)的萃取。本文计算了所有金属体系的萃取常数（logK(ex)），并与二苯甲酰甲烷（DBM）、三氟乙酰丙酮（HTTA）和 1-苯基-3-甲基-4-苯甲酰基-5-吡唑啉酮（HPMBP）得到的萃取常数进行了比较。本文还将该方法用于标准合金中 Cu(II)、Co(II)、Cd(II)、Zn(II)、Pb(II)和 Mn(II)的测定以及合成样品中金属离子的预富集。