title: Stabilize lead and cadmium in contaminated soils using hydroxyapatite and potassium chloride.
abstract: 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.
authors.affiliation: Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Yonghua
authors.initials: Y
authors.lastname: Li
authors.forename: Hairong
authors.initials: H
authors.lastname: Li
authors.forename: Xiaoyong
authors.initials: X
authors.lastname: Liao
authors.forename: Binggan
authors.initials: B
authors.lastname: Wei
authors.forename: Bixiong
authors.initials: B
authors.lastname: Ye
authors.forename: Fengying
authors.initials: F
authors.lastname: Zhang
authors.forename: Linsheng
authors.initials: L
authors.lastname: Yang
authors.forename: Wuyi
authors.initials: W
authors.lastname: Wang
authors.forename: Thomas
authors.initials: T
authors.lastname: Krafft
mesh_terms: D001937:Brassica; D002104:Cadmium / Q000032:analysis / Q000737:chemistry*; D017886:Durapatite / Q000737:chemistry*; D004784:Environmental Monitoring; D004787:Environmental Pollution; D052918:Environmental Restoration and Remediation / Q000379:methods*; D007854:Lead / Q000032:analysis / Q000737:chemistry*; D008906:Mining; D011189:Potassium Chloride / Q000737:chemistry*; D012987:Soil / Q000737:chemistry; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry*; D014675:Vegetables
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium; D007854:Lead; D011189:Potassium Chloride; D017886:Durapatite