| 生物质碳对土壤中微囊藻毒素生物有效性的影响 |
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| 引用本文： | 操庆,刘伟京,顾毓蓉,谢丽强,尤本胜,姜伟立,杨柳燕.生物质碳对土壤中微囊藻毒素生物有效性的影响[J].中国环境科学,2020,40(12):5444-5450. |
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| 作者姓名： | 操庆 刘伟京 顾毓蓉 谢丽强 尤本胜 姜伟立 杨柳燕 |
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| 作者单位： | 1. 南京大学环境学院, 污染控制与资源化研究国家重点实验室, 江苏 南京 210023;3. 江苏省环境科学研究院, 江苏省环境工程重点实验室, 江苏 南京 210036;3. 中国科学院南京地理与湖泊研究所, 湖泊与环境国家重点实验室, 江苏 南京 210008 |
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| 基金项目： | 国家自然科学基金青年基金资助项目（41907350）；中国博士后科学基金资助项目（2019M651753） |
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| 摘 要： | 通过向土壤中添加水稻秸秆生物质碳（RSB）、玉米秸秆生物质碳（MSB）和鸡粪生物炭（CMB）来减少微囊藻毒素-LR（MC-LR）在生菜中的富集.结果表明，RSB、MSB和CMB在添加量为2%时，生菜叶片中MC-LR含量较空白分别降低了58.0%、49.5%和70.4%，使得每日估计摄入量降低到WHO的每日允许摄入量限值以下.CMB显著降低了土壤中MC-LR的总含量，而其他处理则无显著影响.3种生物质碳均显著降低了有效态MC-LR含量，且生菜根系和叶片中MC-LR的含量与土壤MC-LR有效态含量均呈显著正相关关系.所有添加生物质碳处理均对生菜生长无负面影响.
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| 关 键 词： | 生物质碳 微囊藻毒素 生物富集 生物有效性 土壤-作物系统 |
| 收稿时间： | 2020-04-11 |
Effects of biochar application on the bioavailability of microcystins in soils |
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| CAO Qing,LIU Wei-jing,GU Yu-rong,XIE Li-qiang,YOU Ben-sheng,JIANG Wei-li,YANG Liu-yan.Effects of biochar application on the bioavailability of microcystins in soils[J].China Environmental Science,2020,40(12):5444-5450. |
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| Authors: | CAO Qing LIU Wei-jing GU Yu-rong XIE Li-qiang YOU Ben-sheng JIANG Wei-li YANG Liu-yan |
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| Institution: | 1. State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China;2. Jiangsu Provincial Key Laboratory of Environmental Engineering, Jiangsu Provincial Academy of Environmental Science, Nanjing 210036, China;3. State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Three kinds of biochars, rice straw biochar (RSB), maize straw biochar (MSB), and chicken manure biochar (CMB), were added to the soil in order to reduce microcystin-LR (MC-LR) bioaccumulation in lettuce. Results showed that addition of 2% RSB, MSB and CMB decreased the content of MC-LR in the lettuce leaves by 58.0%, 49.5% and 52.3%, respectively, and the estimated daily intake values were much lower than the tolerable daily intake limit proposed by the WHO. All the biochars have no significant impact on soil total MC-LR concentration except CMB, which significantly decreased soil total MC-LR concentration. Bioavailable MC-LR concentrations were significantly decreased by all three biochars. The correlation analysis showed that there was a positive correlation between the bioavailable MC-LR concentrations in the soil and the MC-LR content in lettuce roots, as well as the leaves. Application of biochars had no negative impact on lettuce growth. |
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| Keywords: | biochar microcystins bioaccumulation bioavailability soil-plant system |
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