郭斌;张波;张鼎铭;

• 1:西安科技大学测绘科学与技术学院

摘要(Abstract)：

针对城市绿化带土壤重金属污染问题,该文利用射线荧光光谱仪测量重金属含量,引用单因子与负荷污染指数法并依据国家标准进行污染评价;引入人体暴露风险评价模型,对致癌和非致癌健康风险进行评价。结果表明,研究区土壤重金属污染较严重;经手-口直接摄入是健康风险的主要暴露途径,儿童总的非致癌风险为0.573,成人总的非致癌风险为0.088,均未超过限制1,表明8种重金属不存在明显的非致癌风险;Cr、Co、Ni、As的致癌风险均低于美国环境保护部推荐标准10^(-6),表明重金属的致癌风险均在可接受范围内。研究区内土壤重金属含量及污染状况空间分异显著。研究结果对城市绿化带内土壤重金属污染评价有一定借鉴意义。

关键词(KeyWords)： 重金属;污染水平;健康风险;绿化带土壤;西安市临潼区

Abstract:

Keywords:

基金项目(Foundation): 国家留学基金委员会项目（201708615020）;; 陕西省教育厅基金项目（16JKl495）;; 国家自然科学基金资助项目（41771576）;; 大学生创新创业训练计划项目（201610704145）

作者(Authors): 郭斌;张波;张鼎铭;

DOI: 10.16251/j.cnki.1009-2307.2019.09.011

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