The 137 soil samples were collected in different period of pollution by oil and no pollution in Longdong oil field.The contents of Cd
Cr
Cu
Ni
Zn
Pb and the basic physical chemical properties of soil was monitored.Descriptive statistical analysis and correlation analysis were used to analyze the pollution and correlation of soil heavy metals pollution in oil field.Result shows that
the heavy metals content in soil of this area
except for Cd
is in range of 2nd standard of state
the whole area is a typical cadmium pollution
main source is agriculture fertilizer;Oil in the mining process may pollute soil of oil field in different degrees
Cd is mostly affected among soil heavy metals(growth rate 1/4).Cd
Cr and Ni in soil are three heavy metals in a very significant correlation
Cd and Pb are in significant correlation
Cr and Cu
Pb and Zn have close relationships too.
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references
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