Fig. 4 shows the leachable Pb conce

Fig. 4 shows the leachable Pb concentrations at the top layer. All 51 sample
leachable concentrations were less than 2 mg/l. For the top layer, Pb mean leachable concentrations were reduced to a mean 0.57 mg/l from the untreated 629 mg/l (>99%
reduction). All leachable concentrations from the middle and the bottom layers were less
than the instrument detection limit of 0.05 mg/l. This was consistent with the laboratory
results that showed phosphate-based salts could significantly reduce Pb leachable concentrations.
The Ca(H2PO4)2 and CaCO3 combination showed great potential for field
immobilization of Pb.

結果 (中文) 1:

图 4 显示在最上面一层的可地浸的铅浓度。所有 51 示例可地浸的浓度小于 2 毫克/升。对于顶部图层中，铅意味着可浸出浓度被从未经处理的 629 毫克/升减少到平均的 0.57 毫克/升 （> 99%减少）。从中间层和底层的所有可浸出浓度较少比仪器检出限为 0.05 毫克/升。这是符合实验室结果表明，基于磷酸酯盐能显著降低铅可浸出浓度。Ca (H2PO4) 2 和 CaCO3 组合显示领域的巨大潜力固定化的铅。

結果 (中文) 3:

图4显示在顶部层浸铅浓度。所有51个样本
浸出浓度小于2 mg/L的顶层，Pb的平均浸出浓度减少到平均0.57毫克/升的未经处理的629毫克/升（> 99%
还原）。从中间和底层都浸浓度超过0.05 mg/L，仪器检出限低
这是实验室
结果显示磷酸基盐能显著降低Pb的浸出浓度一致。
Ca（H2PO4）2和CaCO3的组合表现出了极大的潜力
固定铅场。