Pb Cd Cr Zn Cu Ni
FA1 0.3254 (0.070)* 0.1323 (0.0254) 0.2464 (0.0735) 0.1422 (0.0077) 0.0483 (0.0028) 0.2293 (0.0585)
FA2 0.2868 (0.1005) 0.3033 (0.0291) 0.4725 (0.2133) 4.7465 (1.230) 0.2859 (0.1407) 0.2851 (0.0753)
FA3 0.3106 (0.0786) 0.1361 (0.0195) 0.2491 (0.0128) 0.0758 (0.0034) 0.1109 (0.0136) 0.1973 (0.0141)
S1 0.0243 (0.0151) 0.0865 (0.0044) BDL 5.9382 (0.011) 1.533 (0.026) 0.0504 (0.0236)
S2 BDL BDL BDL 0.0843 (0.0098) 0.2972 (0.0221) 0.308 (0.0258)
S3 0.4946 (0.1657) 0.0559 (0.0397) 0.1067 (0.0622) 0.0537 (0.0238) 0.0544 (0.0236) 0.0763 (0.0388)
China limit 3 0.3 10 50 50 10
BDL-below detection limit
*Values in parentheses are standard deviation of means of triplicate
Table 2: The leaching concentrations of heavy metals in fly ashes and vitrified slags (mg/L).