[Content and extractability of heavy metals in cultivated soil in Fujian province].

The total and extractable contents of 7 heavy metals in cultivated soil in Fujian Province were determined. Statistical results indicated that the cultivated soil in Fujian Province was polluted by heavy metals, but different heavy metals caused different pollution levels. The extractable contents of heavy metals accounted for 10.0 to 52.2% of total contents, varying with different heavy metals. There was a significantly positive correlation between total and extractable content of Cu, Zn, Cd, Pb, and Ni. Besides, Zn, Cd, Pb and As had a significantly positive correlation to each other, while only Zn had a significantly positive correlation to Ni, and Cu and Hg were not significantly correlated to any of other heavy metals.