In addition, the bivariate correlation of the Pb and As contents in vegetables was found (Spearman r = 0.713,p b 0.05), and the correlation of both As and Se in the vegetables
and wheat was significant (Spearman r = 0.951, p b 0.01; Spearman
r = 0.996, p b 0.01, respectively). The results revealed the same pollution
source may be responsible for the Pb, As and Se in food. Furthermore, to
study the pollutant status of each species, the concentrations of heavy
metals and metalloids of all species were listed in Table S3.
In addition, the bivariate correlation of the Pb and As contents in vegetables was found (Spearman r = 0.713,p b 0.05), and the correlation of both As and Se in the vegetablesand wheat was significant (Spearman r = 0.951, p b 0.01; Spearmanr = 0.996, p b 0.01, respectively). The results revealed the same pollutionsource may be responsible for the Pb, As and Se in food. Furthermore, tostudy the pollutant status of each species, the concentrations of heavymetals and metalloids of all species were listed in Table S3.
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