| 段明宇，吴 攀，张翅鹏,李学先，覃应机.高砷煤矿污染土壤的小麦砷累积研究[J].麦类作物学报,2017,(7):985 |
| 高砷煤矿污染土壤的小麦砷累积研究 |
| Arsenic Accumulation in Wheat Grown in the Field Polluted by Arsenic Coal Mine |
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| DOI：10.7606/j.issn.1009-1041.2017.07.17 |
| 中文关键词: |
| 英文关键词:High-arsenic coal Soil Wheat Arsenic accumulation |
| 基金项目:国家自然科学基金项目(41403088)；贵州大学联合基金项目(黔科合LH［2014］7651）；贵州大学引进人才科研资助项目(贵大人基合字［2014］53 号)； 贵州省重点学科建设项目(黔学位合字ZDXK［2016］11号) |
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| 中文摘要: |
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| 英文摘要: |
| In order to study the influence of arsenic-contaminated soil to wheat quality and the human health,the content and distribution characteristics of arsenic in soil-wheat system were studied in the field polluted by the drainage of high arsenic coal mine located in Xingren county,Guizhou province of China. The arsenic contents in soil and wheat samples were determined by hydride generation-atomic fluorescence and distribution characteristics of arsenic in soil-wheat system were analyzed. It was found that soil arsenic content in polluted field(area Ⅰ and area Ⅱ) was significantly higher than the control area(area Ⅲ). In area I,the pH value of soil Ⅰ was 4.57,and the soil arsenic content was 1.94 and 2.13 times higher than those in area II and area Ⅲ. Soil arsenic content had a significantly negative correlation with soil pH. Arsenic contents of 67% wheat grain samples exceeded wheat arsenic limit value(0.5 mg·kg-1) in GB2762-2012.Arsenic contents in different organs of wheat were 1.37 mg·kg-1 in root,0.74 mg·kg-1 in leaf,and 0.85 mg·kg-1 in grain. The potential health risk for local residents through consuming the wheat was evaluated by using the USEPA recommended health risk assessment model. The Hazard Quotient(HQ) values for the wheat were 2.82 in area I and 1.19 in area Ⅱ,while it was lower than 1.0 in area Ⅲ. It was indicated that high arsenic background value in soil had influenced the wheat quality slightly,and consumption of the wheat planted in the polluted area had more serious threat on human health. |
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