基于拉依达检验法的场地环境调查土壤重金属异常值识别的研究
Research on the method to identify the outliers of the heavy metal in soil of site environmental investigation based on the PauTa criterion
董聪慧 1袁一 2刘小喜 2梅祖明3
作者信息
- 1. 生态环境部太湖流域东海海域生态环境监督管理局生态环境监测与科学研究中心,上海 200125;上海市岩土工程检测中心有限公司,上海 200436
- 2. 生态环境部太湖流域东海海域生态环境监督管理局生态环境监测与科学研究中心,上海 200125
- 3. 上海市岩土工程检测中心有限公司,上海 200436
- 折叠
摘要
目的 研究一种场地环境调查土壤重金属异常值识别的方法.方法 首先对土壤重金属样本进行正态分布检验,其次采用拉依达检验法识别出重金属的异常值,最后频率直方图验证异常值识别结果.结果 案例研究结果表明,采用拉依达检验法能够有效的识别出场地环境调查土壤重金属含量的异常值.结论 采用拉依达检验法识别场地环境调查土壤重金属含量的异常值,有助于识别低于筛选值但是受人类生产生活影响较大的土壤,能够大大降低土壤累积污染的风险.
Abstract
Objective A method to identify heavy metal outliers in soil of site environmental investigation was studied.Methods First,the normal distribution test of soil heavy metal samples was carried out,then the heavy metal outliers were identified by the PauTa criterion,and the frequency histogram was used to verify the outliers identification results.Results The results of the case study show that the PauTa criterion can effectively identify the outliers of heavy metal content in the soil of the site environmental investigation.Conclusion The use of PauTa criterion to identify the outliers of heavy metal content in soil of site environmental investigation is helpful to identify the soil that is lower than the screening value but greatly affected by human production and life,and can greatly reduce the risk of soil cumulative pollution.
关键词
拉依达检验法/正态分布/频率直方图/土壤重金属/异常值Key words
PauTa criterion/normal distribution/frequency histogram/heavy metal in soil/outliers引用本文复制引用
出版年
2024
NETL
NSTL
万方数据