CJCU

Chem. J. Chinese Universities ›› 1986, Vol. 7 ›› Issue (11): 982.

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Studies on Polarographic Behavior of2,7-TADN (Ⅱ)-Polarographic Adsorptive Complex Wave of Copper -2,7-TADN-Ethylenediamine

Zhang Zhengqi, Yang Xia, Yu Jin, Yu Ruqin   

  1. Department of Chemistry & Chemical Engineering, Hunan University, Changsha
  • Received:1985-07-03 Online:1986-11-24 Published:1986-11-24

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Abstract: In a sodium hydroxide solution of pH12 containing ethylenediamine(en)and 1-(2-Thiazoiylazo)-2,7-Naphthalenediol(2,7-TADN)a sensitive adsorptive complex wave of Cu(2,7-TADN)(en)was observed by using single-sweep polarography.The peak potential is-0.86V,the peak hights being linearly proportional to copper concentration over a range of 2.0×10-8 to 5.0×10-6M.The determination limit is 1.0×10-8M.This method has been applied to determine trace amount of copper in ores and pure tin.In a sodium hydroxide solution of pH12 containing ethylenediamine(en)and 1-(2-Thiazoiylazo)-2,7-Naphthalenediol(2,7-TADN)a sensitive adsorptive complex wave of Cu(2,7-TADN)(en)was observed by using single-sweep polarography.The peak potential is-0.86V,the peak hights being linearly proportional to copper concentration over a range of 2.0×10-8 to 5.0×10-6M.The determination limit is 1.0×10-8M.This method has been applied to determine trace amount of copper in ores and pure tin.

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