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东海岛重化工厂周围土壤重金属生态风险评价

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为了解东海岛重化工厂对周围土壤环境的影响,在工厂周围共采集26个土壤样品,采用地累积指数法和潜在生态风险指数法对样品中8种重金属的质量浓度特征进行分析.结果表明,除Cr外,其余重金属As,Cd,Cu,Hg,Ni,Pb,Zn的最大质量浓度分别为15.6,0.116,53.8,0.055,76.1,31.6,103 mg·kg-1,均未达到国家规定的风险筛选值,表明东海岛重化工厂周围土壤主要受Cr污染.8种重金属平均地累积指数都小于0,为无污染.通过综合潜在风险指数分析得出,研究区为轻微至中等生态风险程度.东海岛工业发展虽然对周围土壤重金属的影响较小,但仍需进行长期监测.
Ecological risk assessment of heavy metals in soils around a heavy chemical plant on Donghai Island
In order to understand the impacts of heavy chemical factories on the surrounding soil environment on Donghai Island,collected 26 soil samples around the factories and analyzed the content characteristics of 8 heavy metal elements in the samples using the geoaccumulation index method and the potential ecological risk index method.The results showed that except for Cr,the maximum mass concentrations of As,Cd,Cu,Hg,Ni,Pb and Zn were 15.6,0.116,53.8,0.055,76.1,31.6,103 mg·kg-1,respectively,which did not reach the national risk screening value,indicating that the soil around the Donghai Island heavy chemical plant was mainly contaminated by Cr.All others did not meet the national risk screening value,indicating that they were mainly contaminated by Cr.The average cumulative index of 8 heavy metals is less than 0,which is non-polluting.The analysis of the combined potential risk index concluded that the study area is of slight to moderate ecological risk.Although the impact of industrial development on Donghai Island on heavy metals in the surrounding soil is relatively small,long-term monitoring is needed.

Donghai Islandheavy chemical plantheavy metal pollutionecological risk assessment

陈梓欣、陈碧珊、杨福宁、李烨俊、纪婉薇、陈家琪

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岭南师范学院 地理科学学院,广东湛江 524048

东海岛 重化工厂 重金属污染 生态风险评价

岭南师范学院大学生创新创业训练计划项目

X202210579022

2024

高师理科学刊
齐齐哈尔大学

高师理科学刊

影响因子:0.351
ISSN:1007-9831
年,卷(期):2024.44(1)
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