FOOD SCIENCE ›› 2005, Vol. 26 ›› Issue (7): 166-169.

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Investigation on the Simultaneous Determination of Lead and Cadnium in North-East Crayfish by Catalytic Polarography

 WANG  Xue-Ying, LU  Xiang-Yun, CHEN  Ai-Ying   

  1. Department of Chemistry, Changshu Institute of Technology
  • Online:2005-07-15 Published:2011-09-19

Abstract: A catalytic polarographic method for simultaneous determination of lead and cadnium in the North-East crayfishwas described. In a base solution containing chlorhydnic acid-ascorbic acid-sodium tartrate-potassium iodied-phosphoric acid asensitive wave of lead and cadnium was obtained. The liner relationship between the concentration and their peak height were inthe range of 0.1~4μg/ml. The results indicate that there is no obviously relationship between the content of heavy metal ionsand the species but the living environment. The content of heavy metal ions in various crayfish tissues is different.

Key words: catalytic polarographic, crayfish, lead, cadnium, simultaneous determination