Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
Environ Monit Assess. 2014 Dec;186(12):9041-50. doi: 10.1007/s10661-014-4064-3. Epub 2014 Sep 25.
Combination of hydroxyapatite (HAP) and potassium chloride (KCl) was used to stabilize lead and cadmium in contaminated mining soils. Pot experiments of chilli (Capsicum annuum) and rape (Brassica rapachinensis) were used to evaluate the stabilization efficiency. The results were the following: (1) the optimal combination decreased the leachable lead by 83.3 and 97.27 %, and decreased leachable cadmium by 57.82 and 35.96% for soil HF1 and soil HF2, respectively; (2) the total lead and cadmium concentrations in both plants decreased 69 and 44 %, respectively; (3) The total lead and cadmium concentrations in the edible parts of both vegetables also decreased significantly. This study reflected that potassium chloride can improve the stabilization efficiency of hydroxyapatite, and the combination of hydroxyapatite and potassium chloride can be effectively used to remediate lead and cadmium contaminated mining soil.
采用羟基磷灰石（HAP）和氯化钾（KCl）的混合物稳定污染矿区土壤中的铅和镉。采用辣椒（Capsicum annuum）和油菜（Brassica rapachinensis）的盆栽实验来评估稳定化效率。结果如下：（1）最优组合可使土壤 HF1 和土壤 HF2 中可浸提铅分别降低 83.3%和 97.27%，可浸提镉分别降低 57.82%和 35.96%；（2）两种植物体内的总铅和镉浓度分别降低了 69%和 44%；（3）两种蔬菜可食用部分的总铅和镉浓度也显著降低。本研究表明氯化钾可以提高羟基磷灰石的稳定化效率，羟基磷灰石和氯化钾的组合可有效用于修复铅和镉污染的矿区土壤。
