Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s11356-016-7231-y |
The effect of municipal sludge compost on the mobility and bioavailability of Cd in a sierozem-wheat system in an arid region northwest of China | |
Liu, Zheng1; Yang, Yang1; Bai, Ying2; Huang, Yu1; Nan, Zhongren1; Zhao, Chuanyan3; Ma, Jianmin1; Wang, Houcheng1 | |
通讯作者 | Nan, Zhongren |
来源期刊 | ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH |
ISSN | 0944-1344 |
EISSN | 1614-7499 |
出版年 | 2016 |
卷号 | 23期号:20页码:20232-20242 |
英文摘要 | The effect of sewage sludge on the mobility and the bioavailability of trace metals in plant-soil systems have aroused wide interested and been widely explored. Based on a wheat-cultivating experiment, the effect of municipal sludge compost (MSC) on the mobility and bioavailability of Cd in a soil-wheat system was studied. With the application of MSC, soil organic matter (SOM), total nitrogen (TN), and total phosphorus (TP) in the soil increased significantly, while concentrations of trace metals (Cu, Zn, Ni, Pb, Cd) were below the China’s minimum thresholds. The application of MSC could improve wheat growth. The application of MSC at the rate of 0.5 % had no significant effect on the chemical fraction distribution of Cd in soil. In two soil treatments, Cd mainly existed in the labile chemical fractions (exchangeable chemical fraction (EXCF) and carbonate chemical fraction (CABF)). However, the application of MSC could reduce accumulation of Cd by wheat. Cd contents in each part of the MSC-applied wheat were significantly less than that of non-MSC-applied wheat. In the tested soils, the extractable concentrations decreased in the order: EDTA > MgCl2 ae NH4OAc > DTPA. There were no significant differences between soil treatments in the amounts of extractable Cd when the extraction was done under neutral conditions, although significant differences were observed when the extraction was done under alkaline conditions. In this study, the DTPA extraction procedure provided a good indication of Cd bioavailability. Our results suggest that, in the short term at least, amending soils with MSC may benefit crop dry matter production while not increasing the risk of human exposure to Cd through consumption of wheat grown on MSC-amended soils. |
英文关键词 | Sierozem Municipal sludge compost Cd Mobility Bioavailability Arid region |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000387599100017 |
WOS关键词 | HEAVY-METAL BIOAVAILABILITY ; SEWAGE-SLUDGE ; CONTAMINATED SOILS ; ORGANIC-MATTER ; AMENDED SOILS ; CADMIUM ; ZINC ; AVAILABILITY ; ACCUMULATION ; LEAD |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
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/2XILL650/192837 |
作者单位 | 1.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China; 2.Gansu Acad Environm Sci, Lanzhou 730030, Peoples R China; 3.Lanzhou Univ, Coll Pastoral Agr Sci & Technol, Lanzhou 730000, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Zheng,Yang, Yang,Bai, Ying,et al. The effect of municipal sludge compost on the mobility and bioavailability of Cd in a sierozem-wheat system in an arid region northwest of China[J]. 兰州大学,2016,23(20):20232-20242. |
APA | Liu, Zheng.,Yang, Yang.,Bai, Ying.,Huang, Yu.,Nan, Zhongren.,...&Wang, Houcheng.(2016).The effect of municipal sludge compost on the mobility and bioavailability of Cd in a sierozem-wheat system in an arid region northwest of China.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,23(20),20232-20242. |
MLA | Liu, Zheng,et al."The effect of municipal sludge compost on the mobility and bioavailability of Cd in a sierozem-wheat system in an arid region northwest of China".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 23.20(2016):20232-20242. |
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