[1]刘 奕,胡立嵩*,张彩香*,等.广州市污染土壤重金属的空间分布及其风险评价[J].武汉工程大学学报,2018,40(02):127-131.[doi:10. 3969/j. issn. 1674?2869. 2018. 02. 002]
LIU Yi,HU Lisong*,ZHANG Caixiang*,et al.Spatial Distribution and Risk Assessment of Heavy Metals in Contaminated Soil in Guangzhou[J].Journal of Wuhan Institute of Technology,2018,40(02):127-131.[doi:10. 3969/j. issn. 1674?2869. 2018. 02. 002]
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广州市污染土壤重金属的空间分布及其风险评价(/HTML)
《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]
- 卷:
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40
- 期数:
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2018年02期
- 页码:
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127-131
- 栏目:
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化学与化学工程
- 出版日期:
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2018-05-17
文章信息/Info
- Title:
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Spatial Distribution and Risk Assessment of Heavy Metals in Contaminated Soil in Guangzhou
- 文章编号:
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20180202
- 作者:
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刘 奕1; 胡立嵩*1; 张彩香*2; 谢梦萦2; 谢新末1; 黄长生3
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1. 武汉工程大学化学与环境工程学院,湖北 武汉 430074;2. 中国地质大学生物地质与环境地质国家重点实验室,湖北 武汉 430074;3. 中国地质调查局武汉地质调查中心,湖北 武汉 430205
- Author(s):
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LIU Yi1; HU Lisong*1; ZHANG Caixiang*2; XIE Mengying2; XIE Xinmo1; HUANG Changsheng3
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1. School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430074, China;2. State Key Laboratory of Biology and Environmental Geology, China University of Geosciences, Wuhan 430074 ,China; 3. China Geological Survey, Wuhan 430205, China
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- 关键词:
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土壤重金属; 地统计学; 空间分布; 潜在生态风险评价
- Keywords:
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soil heavy metals; geostatistics; spatial distribution; potential ecological risk assessment
- 分类号:
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X825
- DOI:
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10. 3969/j. issn. 1674?2869. 2018. 02. 002
- 文献标志码:
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A
- 摘要:
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在珠江-西江经济带先行试验区环境地质调查的基础上,本研究于2016年9月对广州市重金属As、Pb、Cd、Cu污染较严重的区域进行了详查。按照《土壤环境检测技术规范》共采集并分析了69个表层土壤(0 cm~20 cm)样品,发现只有Pb未超标,重金属As、Cd、Cu的超标率分别为8.70%、56.52%、1.45%。利用地统计学对四种重金属进行了空间分布分析,发现 As和Cd表现为中等程度的空间相关性,表明采样区土壤中的As和Cd既受内源污染影响也受到人为活动影响;而Pb和Cu的空间相关性很弱,证明采样区的这两种金属元素已严重受到人为活动干扰。为了对采样区重金属污染进一步进行风险管控,通过潜在生态风险评价法对采样区重金属污染整体情况进行评价,发现该区域整体属于轻微生态风险水平,主要的潜在生态危害因子为Cd。
- Abstract:
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Heavy metals of As, Pb, Cd, Cu in the seriously polluted areas soil in Guangzhou were investigated based on the geological survey for the experiment site in the Pearl River-Xijiang River economic zone. The total of 69 samples in surface soil (0 cm-20 cm) were collected and analyzed according to the Technical Manual For Soil Analysis. The results showed that Pb content met the standard, however, the over-standard rates of As, Cd and Cu were 8.7%, 56.52% and 1.45%, respectively. The spatial distribution was analyzed by geostatistics. It was found that As and Cd appeared moderate spatial correlation, showing that the soil of sampling areas was affected by both endogenous and anthropogenic activities, while the spatial correlation between Pb and Cu was very weak, confirming that these areas were seriously disturbed by human activities. To further control the risk of heavy metal pollution in sampling areas, the potential ecological risk assessment method was used to evaluate the situation of soil heavy metal pollution, demonstrating that there is a slight ecological risk in sampling areas and Cd is a potential ecological risk factor.
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更新日期/Last Update:
2018-04-25