干旱区生态环境知识资源中心(Arid): A promising amendment for the immobilization of heavy metal(loid)s in agricultural soil, northwest China

Arid

DOI	10.1007/s11368-021-02933-y
	A promising amendment for the immobilization of heavy metal(loid)s in agricultural soil, northwest China
	Wu, Yi; Wang, Shengli; Ning, Xiang; Yang, Meng; Liu, Mengbo; Zang, Fei; Nan, Zhongren
通讯作者	Wang, SL ; Nan, ZR (corresponding author), Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China.
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2021
卷号	21 期号:6 页码:2273-2286
英文摘要	Purpose In situ remediation techniques are currently limited for agricultural soil contaminated by heavy metal(loid)s, particularly for alkaline soil. In this study, we applied the amendments (Chinese loess, attapulgites, and composted sludge) to a contaminated alkaline agricultural soil to compare their effectiveness in immobilizing heavy metal(loid)s. Materials and methods Soil was collected from the uppermost 20 cm of a heavily contaminated cornfield in Baiyin, China. The amendments were added to the soil at the ratios of 1%, 5%, 10%, and 15%. Controls without amendment were also included. The effectiveness of amendments was evaluated using single extractions and Tessier sequential extraction procedure. The extractants in the single-step extraction were H2O, calcium chloride (CaCl2), diethylenetriaminepentaacetic acid (DTPA), and hydrochloric acid (HCl). Seed germination was performed with the soil after immobilization for 180 days. Results Chinese loess effectively reduced the toxicity of heavy metal(loid)s and improve seed germination rates compared with attapulgites (ATPs) and composted sludge. Composted sludge effectively transformed heavy metal(loid)s, particularly Cu, from the carbonate fraction into the organic matter or the residual fraction. The concentrations of heavy metal(loid)s extracted with DTPA were positively correlated with the summation of the exchangeable and carbonate fractions (P < 0.05). A high seed germination rate could be obtained when the four amendments were added at the ratios between 5 and 10%. Conclusions Chinese loess was effective and safe to immobilize heavy metal(loid)s in contaminated alkaline agricultural soil. DTPA performed the best in predicting the availabilities of As, Cd, Pb, Cu, and Zn in the soil.
英文关键词	Contaminated soil Heavy metal(loid)s Raw amendment Toxicity Arid region
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000630852400002
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350996
作者单位	[Wu, Yi; Wang, Shengli; Ning, Xiang; Yang, Meng; Liu, Mengbo; Nan, Zhongren] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; [Zang, Fei] Lanzhou Univ, Coll Pastoral Agr Sci & Technol, State Key Lab Grassland Agroecosyst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Wu, Yi,Wang, Shengli,Ning, Xiang,et al. A promising amendment for the immobilization of heavy metal(loid)s in agricultural soil, northwest China[J]. 兰州大学,2021,21(6):2273-2286.
APA	Wu, Yi.,Wang, Shengli.,Ning, Xiang.,Yang, Meng.,Liu, Mengbo.,...&Nan, Zhongren.(2021).A promising amendment for the immobilization of heavy metal(loid)s in agricultural soil, northwest China.JOURNAL OF SOILS AND SEDIMENTS,21(6),2273-2286.
MLA	Wu, Yi,et al."A promising amendment for the immobilization of heavy metal(loid)s in agricultural soil, northwest China".JOURNAL OF SOILS AND SEDIMENTS 21.6(2021):2273-2286.