Combined Amendments of Nano-hydroxyapatite Immobilized Cadmium in Contaminated Soil-Potato (Solanum tuberosum L.) System

Bulletin of Environmental Contamination and Toxicology
Chang LiuYan Feng

Abstract

The toxicity of cadmium (Cd) has posed major public health concern in crops grown in the Cd-contaminated soils. The effects of five amendments, nano-hydroxyapatite (n-HA) and it combined with lime, zeolite, bone mill and fly ash on Cd immobilization in soils and uptake in potatoes, were investigated in a contaminated soil by pot experiments. The result showed that the applications of combined amendments significantly decreased the bioavailable Cd concentrations extracted by TCLP, DTPA-TEA and MgCl2 in the contaminated soils, and changed the soluble and exchangeable and specifically sorbed fractions to oxide-bound and organic-bound fractions. Compared to the control group, the concentrations of Cd in the potato tubers grown in n-HA, n-HA + Fly ash, n-HA + Lime, n-HA + Bone mill and n-HA + Zeolite soil were reduced 17.4%, 20.7%, 15.2%, 32.6% and 39.1%, respectively. Nano-hydroxyapatite combined amendments was more effective in reducing bioavailable Cd concentrations and Cd accumulations in potatoes, especially for n-HA + Z.

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Apr 22, 2009·Bulletin of Environmental Contamination and Toxicology·Dasong Lin, Qixing Zhou
May 26, 2009·Journal of Hazardous Materials·Wei-yu ShiSheng Du
Jun 26, 2015·Environmental Science and Pollution Research International·Muhammad Zia-ur RehmanMuhammad Farooq Qayyum
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Apr 6, 2016·Journal of Hazardous Materials·Rui ShuHuan Zhong
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Nov 12, 2016·Bulletin of Environmental Contamination and Toxicology·Shunhong HuangKun Ouyang

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Citations

Oct 13, 2019·Bulletin of Environmental Contamination and Toxicology·Yangyang WangYansong Wang
Mar 23, 2019·Bulletin of Environmental Contamination and Toxicology·Di Zhang, AiFang Ding
Jun 4, 2021·Environmental Science & Technology·Chuanxin MaBaoshan Xing
Jun 22, 2021·Ecotoxicology and Environmental Safety·Muhammad RizwanJörg Rinklebe

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