| 喷施锌肥对油菜镉锌生物可给性的影响 |
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| 引用本文： | 王林,谷朋磊,李然,徐应明,孙约兵,梁学峰,代晶晶.喷施锌肥对油菜镉锌生物可给性的影响[J].环境科学,2018,39(6):2944-2952. |
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| 作者姓名： | 王林 谷朋磊 李然 徐应明 孙约兵 梁学峰 代晶晶 |
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| 作者单位： | 农业部环境保护科研监测所;农业部产地环境污染防控重点实验室;沈阳农业大学土地与环境学院 |
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| 基金项目： | 国家自然科学基金项目（41571322）；中央级公益性科研院所基本科研业务费专项（农业部环境保护科研监测所）项目；天津市科技支撑计划重点项目（14ZCZDSF00004） |
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| 摘 要： | 采用溶液培养和体外消化实验,研究不同Zn营养条件下,喷施ZnSO_4和ZnNa_2EDTA对两种油菜Cd、Zn质量分数以及生物可给性的影响,计算人体通过食用油菜摄入Cd、Zn的量,评估喷施Zn肥降低人体Cd摄入提高Zn吸收的潜力.结果表明,正常Zn营养下油菜地上部Cd质量分数显著低于缺Zn条件下,喷施ZnNa_2EDTA显著降低油菜Cd质量分数;正常Zn营养下油菜地上部Zn质量分数显著高于缺Zn条件下,喷施Zn肥可显著提高油菜Zn质量分数,其中喷施ZnSO_4处理效果最佳.正常Zn营养下油菜Cd的生物可给性显著低于缺Zn条件下,喷施Zn肥显著降低油菜Cd在胃阶段的生物可给性,与对照相比最大降幅为35.81%,喷施ZnSO_4显著降低Cd在小肠阶段的可给性,最大降幅为59.24%;喷施Zn肥使油菜Zn在胃和小肠阶段的生物可给性显著低于对照处理,最大降幅为68.90%,其中ZnSO_4降低效果明显强于ZnNa_2EDTA.食用Cd污染的普通油菜寒绿摄入Cd的量超过世界卫生组织推荐的每日耐受值,通过选择低积累油菜华骏或喷施ZnSO_4可以显著减少人体摄入Cd的量,有效降低Cd过量摄入的健康风险;食用未喷施Zn肥或喷施低浓度ZnNa_2EDTA的油菜有Zn摄入不足的风险,而食用喷施ZnSO_4或高浓度ZnNa_2EDTA的油菜可以满足蔬菜膳食Zn摄入的需要,其中喷施ZnSO_4效果更好.总之,喷施Zn肥可显著降低油菜地上部Cd、Zn的生物可给性,有效减少人体食用油菜摄入Cd的量,提高摄入Zn的量,其中喷施ZnSO_4处理的效果最佳.
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| 关 键 词： | 油菜 镉 生物可给性 喷施锌肥 体外消化方法 人体健康风险 |
| 收稿时间： | 2017/11/16 0:00:00 |
| 修稿时间： | 2017/12/4 0:00:00 |
Effect of Foliar Zinc Application on Bioaccessibility of Cadmium and Zinc in Pakchoi |
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| WANG Lin,GU Peng-lei,LI Ran,XU Ying-ming,SUN Yue-bing,LIANG Xue-feng and DAI Jing-jing.Effect of Foliar Zinc Application on Bioaccessibility of Cadmium and Zinc in Pakchoi[J].Chinese Journal of Environmental Science,2018,39(6):2944-2952. |
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| Authors: | WANG Lin GU Peng-lei LI Ran XU Ying-ming SUN Yue-bing LIANG Xue-feng and DAI Jing-jing |
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| Institution: | Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China,Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China;College of Soil and Environment, Shenyang Agriculture University, Shenyang 110161, China,Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China;College of Soil and Environment, Shenyang Agriculture University, Shenyang 110161, China,Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China,Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China,Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China and Agro-environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China;Key Laboratory of Original Agro-Environmental Pollution Prevention and Control, Ministry of Agriculture, Tianjin 300191, China;College of Soil and Environment, Shenyang Agriculture University, Shenyang 110161, China |
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| Abstract: | |
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| Keywords: | Brassica chinensis cadmium bioaccessibility foliar zinc fertilization in vitro digestion method human health risk |
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