| 摘要: |
| 为对烟区重金属风险进行评价,对照相应标准,在山东临朐烟区确定18个典型取样点,在取样点采集土壤和烟叶样品,使用微波消解-电感耦合等离子体质谱法分析了土壤和烟叶样品中的As、Cd、Cr、Hg和Pb含量。结果表明:土壤表层重金属含量明显高于土壤底层,山东临朐烟区土壤重金属含量均低于土壤质量二级标准,土壤重金属风险处于"安全"等级, Hg是临朐烟区相对风险较高的土壤重金属元素;烟叶中重金属风险处于低风险状态,烟叶重金属含量存在年际变化,其中Hg含量的年际差异变化最大。临朐烟区各取样点重金属风险评价综合指数均低于一级标准,临朐烟区处于重金属风险的"安全"等级,但有个别取样点重金属风险评价综合指数已接近"安全"等级上限,需要注意防范。 |
| 关键词: 烟草 重金属 风险分析 临朐 |
| DOI：10.11841/j.issn.1007-4333.2013.04.17 |
| 投稿时间：2012-12-23 |
| 基金项目:中国烟草总公司山东省公司科技重大专项(201101); 潍坊烟草有限公司科技创新项目(2010-04) |
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| Evaluation and analysis on heavy metal safety degree of the tobacco growing region in Linqu,Shandong Province |
|
YAN Hui-feng1, LIU Hai-wei1, LIANG Hong-bo1, ZHAO Xiang-jiang2, BAI Hua-jun2, ZHOU Xin2, LIU Guang-liang1, SHI Yi1
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| (1.Tobacco Research Institute/Key Laboratory of Tobacco Biology and Processing of Ministry of Agriculture, Chinese Academy of Agricultural Science, Qingdao 266101, China;2.Linqu Tobacco Branch of Weifang Tobacco Corporation, Linqu 262600, China) |
| Abstract: |
| In the tobacco growing region in Linqu,Shandong Province,18 typical sampling points were selected.In the sampling points,soil samples and tobacco samples were collected to analyze the concentration of As,Cd,Cr,Hg and Pb in the soil samples and tobacco samples.According to the interrelated criterion,the heavy metal risk in the tobacco growing region in Linqu was assessed.The result showed that the heavy metal concentration in the soil surface was significantly higher than that in the underlying soil.And the As,Cd,Cr,Hg and Pb concentration of the soil in Linqu tobacco growing region was lower than the level Ⅱ in "environmental quality standard for soils",and the soil heavy metal risk was in the "safe" grade.Hg was the relatively higher risk of heavy metal in soils.Tobacco heavy metal risk was also in low-risk status,and the heavy metal concentration in tobacco was changed between two years,especially the Hg concentration changed most greatly.The synthesizing pollution index in all the typical sampling points was all smaller than the level Ⅰ,and the heavy metal risk in Linqu tobacco growing region was in the "safe" grade.But the synthesizing pollution index in some individual point was approaching level Ⅰ which needs to pay attention to prevent heavy metal risk.The next step is to do a comprehensive analysis of soil environmental quality and the impact of factors on the tobacco heavy metal content. |
| Key words: tobacco growing region heavy metal,risk analysis Linqu |
