A combined management scheme to simultaneously mitigate As and Cd concentrations in rice cultivated in contaminated paddy soil
文献类型:期刊论文
作者 | Yang, Xiao4; Li, Junchun4,5; Liang, Tao4,6; Yan, Xiulan4; Zhong, Lirong7; Shao, Jinqiu4,6; El-Naggar, Ali8; Guan, Chung-Yu1; Liu, Juan2; Zhou, Yaoyu3 |
刊名 | JOURNAL OF HAZARDOUS MATERIALS |
出版日期 | 2021-04 |
期号 | 416页码:125837 |
DOI | 10.1016/j.jhazmat.2021.125837 |
英文摘要 | Paddy soils in southern China are heavily co-polluted by arsenic (As) and cadmium (Cd). The accumulation of these contaminants in rice grains may pose a high health risk. We evaluated the impact of adjusted water management practice (i.e., conventional irrigation and aerobic treatment after heading stage) and the application of two immobilization agents (i.e., CaO and Fe2O3) on the accumulation of As and Cd in rice grains of three rice varieties (i.e., Jinyou-463, Jinyou-268, and Mabayouzhan). The different schemes were tested via conducting a field experiment in paddy soil in Shaoguan, Guangdong Province, China. The results showed that the combined scheme (selecting Jinyou-268, aerobic water management after the heading stage, and 0.09% CaO and 0.5% Fe2O3 amendments) exhibited the best performance in the reduction of As and Cd accumulation in rice grains. This combined scheme decreased the grain As concentration by 26.19% and maintained the Cd at a low level (0.056 mg/kg) as compared to the use of local conventional irrigation patterns. Moreover, health risk assessment demonstrated that by applying the optimal scheme, neither As nor Cd content in rice had carcinogenic risk. However, the grain As remains at a high non-carcinogenic risk. We suggest that future field study design should fully incorporate the uncertainty of the natural environment to make the research conclusions more feasible for popularization and utilization. This study demonstrated an approach of utilizing the synergy effects of various measures for safe rice production in fields subjected to As and Cd contaminations. |
资助项目 | National Natural Science Foundation of China[41571309] |
语种 | 英语 |
源URL | [http://ir.igsnrr.ac.cn/handle/311030/184456] |
专题 | 地理科学与资源研究所_自然地理与全球变化研究部 |
作者单位 | 1.Natl Ilan Univ, Dept Environm Engn, Yilan 260, Taiwan 2.Guangzhou Univ, Sch Environm Sci & Engn, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ,Inst Environm Res Greater Bay, Guangzhou 510006, Peoples R China 3.Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 5.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 7.Pacific Northwest Natl Lab, Energy & Environm Directorate, POB 999, Richland, WA 99354 USA 8.Ain Shams Univ, Fac Agr, Dept Soil Sci, Cairo 11241, Egypt |
推荐引用方式 GB/T 7714 | Yang, Xiao,Li, Junchun,Liang, Tao,et al. A combined management scheme to simultaneously mitigate As and Cd concentrations in rice cultivated in contaminated paddy soil[J]. JOURNAL OF HAZARDOUS MATERIALS,2021(416):125837. |
APA | Yang, Xiao.,Li, Junchun.,Liang, Tao.,Yan, Xiulan.,Zhong, Lirong.,...&Zhou, Yaoyu.(2021).A combined management scheme to simultaneously mitigate As and Cd concentrations in rice cultivated in contaminated paddy soil.JOURNAL OF HAZARDOUS MATERIALS(416),125837. |
MLA | Yang, Xiao,et al."A combined management scheme to simultaneously mitigate As and Cd concentrations in rice cultivated in contaminated paddy soil".JOURNAL OF HAZARDOUS MATERIALS .416(2021):125837. |
入库方式: OAI收割
来源:地理科学与资源研究所
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