Table 2: Linear regression slopes and -values (in parentheses) for correlations between vegetable Pb and As concentrations (mg kg−1) and soil soluble (mg L−1) and total Pb and As (mg kg−1). -values denoted with asterisks are significant at the 5% level.

Crop Metal Soil parameter tested
Soluble metal Total metal

LettucePb 3.08 (0.805)0.000769 (0.970*)
As 6.53 (0.998*)0.0288 (0.939*)
Carrot (unpeeled)Pb12.4 (0.717)0.00177 (0.943*)
As1.59 (0.997*)0.00609 (0.955*)
Bean (pods)Pb 1.16 (0.346) (0.521)
As5.85 (0.991*)0.0213 (0.918*)
Tomato (fruit)Pb 0.516 (0.851*) (0.977*)
As0.0073 (0.942*) (0.908*)