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李丁,王济,宣斌,等. 基于物元分析法的贵阳近郊菜地土壤重金属污染评估[J]. 科学技术与工程, 2020, 20(1): 397-405.
Li Ding,et al.Assessment Heavy Metals Pollution in Vegetable Soils of Guiyang Suburbs Based on Matter Element Analysis[J].Science Technology and Engineering,2020,20(1):397-405.
基于物元分析法的贵阳近郊菜地土壤重金属污染评估
Assessment Heavy Metals Pollution in Vegetable Soils of Guiyang Suburbs Based on Matter Element Analysis
投稿时间:2019-05-14  修订日期:2019-09-21
DOI:
中文关键词:  菜地 重金属 物元分析 土壤评价
英文关键词:vegetable soil heavy metals matter element analysis soil evaluation
基金项目:贵州省科技支撑计划项目(黔科合支撑[2017]2580);贵州省科学技术基金重点项目(黔科合JZ字[2014]2012号)
              
作者单位
李丁 贵州师范大学地理与环境科学学院
王济 贵州师范大学地理与环境科学学院
宣斌 贵州师范大学地理与环境科学学院
蔡雄飞 贵州师范大学地理与环境科学学院
赵士杰 贵州师范大学地理与环境科学学院
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中文摘要:
      为了解贵阳郊区菜地土壤中重金属含量及污染状况,通过对贵阳南部近郊菜地47个土壤样品中Zn、Cd、Pb和Cu总量及有效态含量进行测定与分析,采用物元分析法对研究区菜地土壤重金属污染状况进行综合评估,并使用内梅罗综合污染指数法及潜在生态风险指数法对其评估结果进行对比分析。结果表明:菜地土壤样品中重金属Zn、Pb和Cu总量超出贵州省土壤环境背景含量的比例分别为36.17%、97.87%和65.96%,分别有10.64%和17.02%样点Zn和Cu总量超出国家土壤环境质量Ⅱ级标准的限值;相关性分析显示Zn与Cd、Pb与Cu可能有相似来源,各重金属元素总量和有效态含量的高低并不完全契合;物元分析结果表明,研究区有78.72%样点处于Ⅰ级(无污染),14.89%样点处于Ⅱ级(轻度污染),10.64%样点处于Ⅲ级(中度污染)水平。物元分析法既考虑到土壤重金属污染的特性,又兼顾了污染物的浓度和毒性,综合分析认为,物元分析评价结果更为客观合理。
英文摘要:
      In order to ascertain the heavy metals pollution in the vegetable soil in suburbs of Guiyang, the total and available contents of heavy metal elements such as Zn, Cd, Pb and Cu in 47 soil samples from the suburbs of southern Guiyang were determined and analyzed. The matter element analysis was used to comprehensively evaluate the pollution status of heavy metals in vegetable soil, and the assessment results of the Nemerow comprehensive pollution indexes and the potential ecological risk index method were was used for a comparative analysis. The results shown that the total contents of Zn, Pb, and Cu in the vegetable soil exceeded the soil environmental background contents of Guizhou Province, accounting for 36.17%, 97.87%, and 65.96%, respectively. There were 10.64% and 17.02% respectively sample that total contents of Zn and Cu exceeded standard limit value of the national soil environmental quality Ⅱ. Correlation analysis shown that Zn and Cd, Pb and Cu might have similar sources, the total and available contents of the investigated heavy metals were not completely corresponding. The matter element analysis result shown that 78.72% of the samples were at level I (non-polluting), 14.89% were at level II (mild pollution), and 10.64% were at level III (moderate pollution). Matter element analysis method not only considers the characteristics of heavy metal pollution in soil, but also takes into account the concentrations and toxicity of pollutants. It can be considered that the result of matter element analysis is more objective and reasonable.
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