Investigation on children′s growth and IQ after treatment of mercury pollution in Songhua river

  Objective   To study the status of childrencs growth and intelligence quotient(IQ)after treatment of the mercury pollution in Songhua river.

  Methods   To test the content of environmental mercury in the treated region of Songhua river and the control region; to test the content of mercury in hair of children 10~13 years old and to determine the growth index such as height, body weight, sitting height, chest circumference, back strength, grip strength; to measure the IQ with CRT-RC.

  Results   The content of mercury in the sample of water, soil and fish in two region were all lower than the national standard and the data between the two regions hade no statistical significance; the content of mercury in the rice sample of the two region had statistical difference, but it was lower than the national standard; the content of the mercury in the children's hair and all kinds of index which reflected childrencs growth had no statistical significance between the two region.

  Conclusion   The status of childrencs growth and IQ after treatment of the pollution of mercury in Songhua river get close to normal level.