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Toxicity assessment of molybdenum slag as a mineral fertilizer: A case study with pakchoi (Brassica chinensis L.)
Chen, Dong1,2; Meng, Zhong-wen1; Chen, Yi-ping1
通讯作者Chen, Yi-ping(chenyp@ieecas.cn)
2019-02-01
发表期刊CHEMOSPHERE
ISSN0045-6535
卷号217页码:816-824
摘要Large quantities of molybdenum (Mo) slag are generated as a by-product during mining and smelting, which not only occupy huge stretches of arable land and natural habitats but also threaten the local ecosystem and environment. How to recycle this Mo slag is becoming an urgent issue. Here, we reported the toxicity assessment of Mo slag as a mineral fertilizer for slag recycling in agricultural practices. The results showed the following: (1) Lower rates of slag (1.0%, 2.5%, and 5.0%) fertilization, especially 5.0% slag, increased the activities of antioxidant enzymes (superoxide dismutase, catalase, and peroxidase), the contents of chlorophyll, and both the maximum quantum yield and quantum efficiency of photosystem II; decreased the content of malondialdehyde and the non-photochemical quenching of photosystem II; and eventually increased the height, leaf area, and biomass of pakchoi seedlings; (2) Higher rates (7.5% and 10.0%) of Mo slag application resulted in a reduction in the aforementioned physiological and morphological parameters (except for peroxidase activity) of pakchoi seedlings; and (3) Although fertilization with 5.0% slag increased the accumulation of the non-essential elements arsenic (As), lead (Pb), and cadmium (Cd) in pakchoi seedlings, their contents were still lower than the maximum levels of the Codex Alimentarius Commission, European Union, and standards of China. From the perspectives of plant nutrition and food safety, our results showed that Mo slag fertilization at rates lower than 5.0% can be applied as a mineral fertilizer for pakchoi grown on calcareous soils. (C) 2018 Elsevier Ltd. All rights reserved.
关键词Molybdenum slag Soil fertilizer Calcareous soil Non-essential elements Pakchoi
DOI10.1016/j.chemosphere.2018.10.216
关键词[WOS]STEEL SLAG ; CHLOROPHYLL FLUORESCENCE ; IRON FERTILIZER ; METHANE EMISSION ; HEAVY-METALS ; SOIL ; POLLUTION ; CADMIUM ; PLANTS ; IMPROVEMENT
收录类别SCI ; SCI
语种英语
资助项目Science and Technology Service Network Initiative (STS) of the Chinese Academy of Sciences[KFJ-EW-STS-124] ; University of Chinese Academy of Sciences (UCAS) Joint PhD Training Program[2017-71]
WOS研究方向Environmental Sciences & Ecology
项目资助者Science and Technology Service Network Initiative (STS) of the Chinese Academy of Sciences ; University of Chinese Academy of Sciences (UCAS) Joint PhD Training Program
WOS类目Environmental Sciences
WOS记录号WOS:000456223500089
出版者PERGAMON-ELSEVIER SCIENCE LTD
引用统计
被引频次:15[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/14399
专题生态环境研究室
通讯作者Chen, Yi-ping
作者单位1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714
Chen, Dong,Meng, Zhong-wen,Chen, Yi-ping. Toxicity assessment of molybdenum slag as a mineral fertilizer: A case study with pakchoi (Brassica chinensis L.)[J]. CHEMOSPHERE,2019,217:816-824.
APA Chen, Dong,Meng, Zhong-wen,&Chen, Yi-ping.(2019).Toxicity assessment of molybdenum slag as a mineral fertilizer: A case study with pakchoi (Brassica chinensis L.).CHEMOSPHERE,217,816-824.
MLA Chen, Dong,et al."Toxicity assessment of molybdenum slag as a mineral fertilizer: A case study with pakchoi (Brassica chinensis L.)".CHEMOSPHERE 217(2019):816-824.
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