| 光谱学与光谱分析 |
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| Spectra Study of a Sodion Triethylenetetramine-bisDithiocarbamate and Its Complexes with Heavy Metal Ions |
| LIAO Qiang-qiang1,2,WANG Zhong-yuan1,LI Yi-jiu1,XIANG Bo1,CHENG Ru-mei1,ZHANG Qin-jian3 |
1. Department of Chemistry, Tongji University, Shanghai 200092, China
2. Key Laboratory of Shanghai Colleges and Universities for Electric Power Corrosion Control and Applied Electrochemistry, Shanghai University of Electric Power, Shanghai 200090, China
3. Jiaxipera Compressor Co., LTD., Yunhe 314011, China |
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Abstract A sodion triethylenetetramine-bisdithiocarbamate(DTC-TETA) and its complexes with heavy metal ions were investigated by FTIR, UV, FAAS and elemental analysis, respectively. The FTIR spectrum of DTC-TETA showed strong absorption peaks at 1 461-1 388 cm-1 and 1 174-996 cm-1 which were attributed to partly double bonds of CN and CS, respectively. The UV spectrum of DTC-TETA had two absorption peaks at 265 and 290 nm, assigned to π—π* transition of N…C…S radical and nonbonding electron n—π* transition of S…C…S radical to conjugated system, respectively. The elemental analysis results demonstrated that the mol ratio of C, H, N and S in DTC-TETA was about 2∶4∶1∶1. As for UV spectrum of its complexes with Cu(Ⅱ), Cd(Ⅱ), Zn(Ⅱ) and Ni(Ⅱ), there were four new absorption peaks at 321, 310, 311 and 325 nm, respectively. Coupled to flow-injection, FAAS determination showed that the complexation performance of Cu2+,Cd2+,Ni2+ and Zn2+ complexes of DTC-TETA was better than that of sodium diethyldithiocarbamate (DDTC).
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Received: 2007-10-08
Accepted: 2008-01-08
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Corresponding Authors:
LIAO Qiang-qiang
E-mail: liaoqq1971@yahoo.com.cn
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