攀西某芒果产区土壤重金属污染源解析
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X53

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国家自然科学基金(41402248);国家重点研发计划项目国家重点研发计划项目(2019YFC1803500、2019YFC1803504);四川省科技厅重点研发项目(2018SZ0298);干热河谷特色生物资源开发四川省高校重点实验室开放(JDH-2019-E-01、GR-2020-E-02);攀枝花市科技计划项目(2017CY-N-8);西南科技大学龙山人才科研计划项目(17LZX613, 18LZX638, 18lzx309, 18lzxt03)。


Source Apportionment of Soil Heavy Metal Pollution in a Mongo Producing Area in Panxi
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    摘要:

    为了探究攀西地区芒果产区土壤重金属的污染来源,本文基于地理信息系统(GIS),结合数理统计、相关性分析以及正定矩阵因子分析等方法,以攀枝花米易县某芒果产区为研究区分析土壤重金属的污染现状并识别重金属来源。结果表明:(1)研究区土壤样品中Cd全超标,Cr、Cu、Ni超标率处于29.63%~37.04%之间,Pb和Zn未超标符合国家土壤环境质量要求;(2) 六种重金属元素中仅有Zn含量均值未超过四川省背景值,其余重金属均值均超过背景值;(3)在芒果的果肉中未检测到重金属超标,未发现重金属在芒果中富集的迹象;(4) Cd对研究区内的土壤重金属污染起控制性作用,主要来源于土壤母质、农业生产活动,而与人类生产活动相关的污染源对Cd的总贡献率是土壤母质来源的2.3倍;(5) Cu主要来源于工农业生产活动,其贡献率共计97.19%;(6)Cr、Ni主要来源于芒果种植过程中施肥等农业生产活动。

    Abstract:

    To clear the source of soil heavy metal pollution in a mongo producing area in Panxi, this article is based on geographic information system (GIS), combined with the mathematical statistics, correlation analysis and Positive Matrix Factorization (PMF) analysis method for analysis of pollution situation and source identification of soil heavy metals in a mongo producing area located in Miyi county, Panzhihua, Sichuan province. The results showed that:(1) Compared with the risk screening values for soil contamination of agricultural (GB15618-2018), Cd in all soil samples exceeds the standard, and exceeding standard rate of Cr, Cu and Ni ranges from 29.63% to 37.04%, and only Pb and Zn satisfies the quality requirement of national soil environment. (2) Only the average Zn content in the six heavy metals did not exceed the background value of Sichuan Province, and the average other heavy metals exceeded the background value;(3) No excessive heavy metals were detected in mango pulp, and no sign of enrichment of heavy metals in mango was found;(4) Cd plays a controlling role in soil heavy metal pollution in the study area, mainly from soil parent material and agricultural production activities, and the total contribution rate of pollution sources related to human production activities to Cd is 2.3 times that of soil parent material sources;(5) Industrial and agricultural production activities are main sources of Cu in soil and their contribution rate is 97.19%. (6) Cr and Ni mainly come from agricultural production activities such as fertilization during mango planting.

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王哲,蒋虎,罗莹,等. 攀西某芒果产区土壤重金属污染源解析[J]. 科学技术与工程, 2022, 22(10): 4237-4246.
Wang Zhe, Jiang Hu, Luo Ying, et al. Source Apportionment of Soil Heavy Metal Pollution in a Mongo Producing Area in Panxi[J]. Science Technology and Engineering,2022,22(10):4237-4246.

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历史
  • 收稿日期:2021-06-04
  • 最后修改日期:2022-03-22
  • 录用日期:2021-11-30
  • 在线发布日期: 2022-04-14
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