高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (S1): 44.

• Atomic Spectrometry • 上一篇    下一篇

Separation and Enrichment of Trace Mn(II),Co(II),Ni(II) and Cd(II) by Coprecipitation with two Carriers and Study on their Mechanism

SU Yao-Dong. ZHANG Bin-Ru1, XIA Qing1, CHENG Xiang-Sheng1, XU Ren2   

  1. 1. Department of Chemistry, Tongji University, Shanghai 200092, P. R. China;
    2. East China Sea Monitoring Center, State Oceanic Administration, Shanghai 200137, P. R. Chim
  • 出版日期:1999-12-31 发布日期:1999-12-31

Separation and Enrichment of Trace Mn(II),Co(II),Ni(II) and Cd(II) by Coprecipitation with two Carriers and Study on their Mechanism

SU Yao-Dong. ZHANG Bin-Ru1, XIA Qing1, CHENG Xiang-Sheng1, XU Ren2   

  1. 1. Department of Chemistry, Tongji University, Shanghai 200092, P. R. China;
    2. East China Sea Monitoring Center, State Oceanic Administration, Shanghai 200137, P. R. Chim
  • Online:1999-12-31 Published:1999-12-31

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摘要：

Trace Mn(II), Co(II), Ni(II) and Cd(II)(2 ug/mL) were successfully coprecipitated with Copper Pyrrolidine Dithiocarbamate(Cu(II)-PDC) and Magnesium 8-hydroxyquinoline(Mg-8-QT) at pH3_6 and pH9-12 respectively and determined by FAAS. The recoveries were above 90%. 0.1-0.5 p g/ml of Co(II) and Ni(II) could also be quantitatively recovered. The study on coprecipitation mechanism by desorption methods was carried out. The results could be explained by the theory of Soft and Hard Acids and Bases (SHAB) successfully.

Abstract:

Trace Mn(II), Co(II), Ni(II) and Cd(II)(2 ug/mL) were successfully coprecipitated with Copper Pyrrolidine Dithiocarbamate(Cu(II)-PDC) and Magnesium 8-hydroxyquinoline(Mg-8-QT) at pH3_6 and pH9-12 respectively and determined by FAAS. The recoveries were above 90%. 0.1-0.5 p g/ml of Co(II) and Ni(II) could also be quantitatively recovered. The study on coprecipitation mechanism by desorption methods was carried out. The results could be explained by the theory of Soft and Hard Acids and Bases (SHAB) successfully.

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