Correlation of the Heavy Metal Content in Soil and Vegetable from Luoyang Suburban Vegetable Field

Soils and vegetables from Luoyang suburban vegetable fields being taken as sample,with Atomic Absorption Spectrometry and Cold Atomic Fluorescence Spectrophotometry,the content of Cu,Pb,Zn,Cd and Hg in the samples were analyzed.The single-factor pollution index and the comprehensive pollution index were adopted to investigate the heavy metals pollution in soil and vegetable.The correlation of the heavy metal content in soil and vegetable was discussed.The results showed that the content of Cu,Pb,Zn,Cd and Hg was qualified for the second level criterion of Standard of Soil Environment(GB15618-1995).However,some vegetables were polluted by heavy metals according to the national vegetable food criterion in partial study area.The content of Cu,Cd and Hg in soil showed a significantly correlation with that in vegetable,respectively.Thus,the content of Pb and Zn did not present a correlation between most of vegetables and soil.