A nationwide assessment of heavy metal accumulation in rapeseed across China: Distribution patterns, driving factors, and safety thresholds
文献类型：期刊论文
| 作者 | Liu, Qiqing2,3; Zhang, Qingying3; Wang, Liang1,2; Wulijia, Bayier2,3; Liao, Xiaoyong1,2 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2026-04-01 |
| 卷号 | 507页码:141761 |
| 关键词 | Rapeseed Heavy metal Spatial distribution Accumulation characteristic Safety threshold |
| ISSN号 | 0304-3894 |
| DOI | 10.1016/j.jhazmat.2026.141761 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | As the world's second largest oilseed crop by production, rapeseed plays a critical role in edible oil production. However, heavy metal accumulation in rapeseed raises food safety concerns, and a systematic nationwide assessment of contamination in China's soil-rapeseed systems remains scarce. This study analyzed 404 paired soil-rapeseed samples from 21 provinces to investigate the enrichment characteristics and influencing factors of Cd, Pb, and As. Results showed average soil concentrations of Cd, Pb and As for 0.388, 35.5 and 22.8 mg/kg, respectively. Cd exhibited prominent contamination with an exceedance rate of 42.8% (GB 15618-2018), particularly in Central, Southwestern, and Southern China. The average concentrations in rapeseed grains were 0.061 (Cd), 0.086 (Pb), and 0.165 mg/kg (As), indicating mild contamination overall. Pb was identified as a priority control pollutant with exceedance rate of 6.7%, most severe in Northwest China. Random forest analysis revealed variety is the dominant factor affecting heavy metal accumulation, followed by soil heavy metal concentration, with atmospheric deposition being a significant contributor to grain Pb. Based on bioaccumulation factors, Fengyou 306 and Zhongyou 788 were identified as promising varieties for safe production, while Fengyou 737, Huayouza 62, and Yangguang 2009 were not recommended for highly Pb-polluted areas. Using the Burr III model, safety thresholds for soil Cd and Pb were established at 8.01 and 295 mg/kg, respectively. This study provides a scientific basis for risk management and variety-based remediation strategies in rapeseed production. |
| URL标识 | 查看原文 |
| WOS关键词 | TOXICITY THRESHOLDS ; AGRICULTURAL SOILS ; PADDY SOIL ; CD ; CADMIUM ; POLLUTION ; PB ; CULTIVARS ; LEAD |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001724713900001 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/221278]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 通讯作者 | Wang, Liang; Liao, Xiaoyong |
| 作者单位 | 1.Beijing Key Lab Environm Damage Assessment & Remed, Beijing 100101, Peoples R China; 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Qiqing,Zhang, Qingying,Wang, Liang,et al. A nationwide assessment of heavy metal accumulation in rapeseed across China: Distribution patterns, driving factors, and safety thresholds[J]. JOURNAL OF HAZARDOUS MATERIALS,2026,507:141761. |
| APA | Liu, Qiqing,Zhang, Qingying,Wang, Liang,Wulijia, Bayier,&Liao, Xiaoyong.(2026).A nationwide assessment of heavy metal accumulation in rapeseed across China: Distribution patterns, driving factors, and safety thresholds.JOURNAL OF HAZARDOUS MATERIALS,507,141761. |
| MLA | Liu, Qiqing,et al."A nationwide assessment of heavy metal accumulation in rapeseed across China: Distribution patterns, driving factors, and safety thresholds".JOURNAL OF HAZARDOUS MATERIALS 507(2026):141761. |
入库方式： OAI收割
来源：地理科学与资源研究所
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