Effects of Amendments and Water Conditions on the Chemical Speciation of Cd and Pb in Contaminated Paddy Soil in a Mining Area

被引：9

作者：

Zhang, Peng ^{[1
]}

Zhang, Chaolan ^{[2
]}

Pan, Liping ^{[3
]}

Yang, Weiwei ^{[2
]}

Li, Chuanzhang ^{[4
]}

Xu, Guiping ^{[4
]}

Li, Fangyuan ^{[2
]}

Lu, Meixian ^{[2
]}

机构：

[1] Guangdong Prov Acad Environm Sci, Guangzhou, Guangdong, Peoples R China

[2] Guangxi Univ, Sch Environm, Nanning 530005, Guangxi, Peoples R China

[3] Guangxi Acad Agr Sci, Agr Resources & Environm Res Inst, Nanning, Guangxi, Peoples R China

[4] Environm Monitoring Stn Guangxi, Nanning, Peoples R China

来源：

SOIL & SEDIMENT CONTAMINATION | 2016年 / 25卷 / 07期

基金：

中国国家自然科学基金;

关键词：

amendments; cadmium; chemical speciation; lead; soil water; TRACE-METALS; CADMIUM; SOLUBILITY; LIME; ZINC; LEAD;

D O I：

10.1080/15320383.2016.1204530

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Lime, sepiolite and peat were used as amendments to study their effects on the chemical speciation of Cd and Pb in a polluted paddy soil under moist and water-logged conditions. The results showed that application of amendments reduced acid-extractable Cd (up to 12.56% and 5.07%) and Pb (up to 6.69% and 2.68%) in moist and water-logged soils, respectively. The reducible Cd and residual Cd was increased while the oxidizable Cd was decreased after adding amendments. However, the oxidizable Pb was increased while the residual Pb was decreased in amended soil, and the reducible Pb presented a different changing trend under moist and water-logged conditions. The soil pH was significantly correlated with different fractions of Cd and Pb in soil, which indicated a distinct influence of soil pH on the redistribution process of Cd and Pb fractions in amended soil.

引用

页码：717 / 726

页数：10

共 34 条

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