JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2016, Vol. 51 ›› Issue (7): 137-142.doi: 10.6040/j.issn.1671-9352.0.2016.035

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Research into the accumulative levels about Cd,Pb in Channa argus and Siniperca chuatsi from the East Dongting Lake

SUN Xiao-chuan1, WANG De-liang1*, WANG Yuan-lan2, ZHAN Hui-ying1   

  1. 1. School of Life-Science and Technology of Central South University of Forestry &
    Technology, Changsha 410004, Hunan, China;
    2. School of Science of CSUFT, Changsha 410004, Hunan, China
  • Received:2016-01-25 Online:2016-07-20 Published:2016-07-27

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Abstract: The concentrations and distribution characteristics of Cd,Pb in the organizations of Channa argus and Siniperca chuatsi from East Dongting lake had been measured with wet digestion by Graphite Furnace Atomic Absorption Spectrophptometry(GF-AAS), and their associations with body length and body weight were also examined, and the method of single factor pollution index and THQ were used to evaluate the pollution degree and edible security. The results showed that the concentrations of the heavy metals present tissue-specific, and the concentrations and the distributions of the Cd, Pb in the same organs and tissues were quite different.(Accumulations of Pb are higher than Cd). The contents of Cd and Pb are higher in intestines and purtenance, and lower in muscle. Correlation analysis showed that there were significant correlations between concentrations of the heavy metals in the organs of these fish(P<0.05)except the Pb in Channa argus, also the levels of Cd, Pb in each organ presented higher correlation with body length and body weight in Siniperca chuatsi, but there is lower in Channa argus. The pollution degree analysis and health risk assessment showed that in addition to the muscle tissue(Pb snakehead muscle tissue is slightly polluted), other tissues and organs are presented different pollution levels. Consumption of snakehead and mandarin fish from this area has no obvious health risks and food security is higher.

Key words: heavy metal, organ and tissue, health risk assessment, edible safety, stand volume

CLC Number: 

  • Q178
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