
Keywords: PbT; Total soil Pb concentration; PbNA; Nitric acid (0.43â¯M) extractable Pb concentration in the soil; PbCC; Calcium chloride (0.01â¯M) extractable Pb concentration in the soil; PbCL; the Pb contamination level in cabbage leaf; PbDTPA; DTPA (0.005â¯M)