内梅罗指数法在石油开采区土壤PAHs污染分级评价中的应用  

Application of Nemerow Index Method in Grade Evaluation of PAHs Pollution in the Oilfield Soils

作　　者：邹乔[1] 王瑶[1] 杜显元[1] 李兴春 李鱼[1] 

机构地区：[1]华北电力大学能源与环境研究院,北京102206 [2]中国石油集团安全环保技术研究院,北京100083

出　　处：《安徽农业科学》2011年第12期7350-7353,共4页Journal of Anhui Agricultural Sciences

基　　金：国家"十一五"科技支撑项目(2008BAC43B01)

摘　　要：针对内梅罗指数法在土壤质量评价过程中存在的问题,考虑各评价因子的相关性,利用多元线性回归分析各评价因子的浓度,计算其复相关系数,对每种评价因子赋予权重值,通过引入浓度权重对污染指数平均值(Pi均)进行修正;同时借鉴化学品评分排序模式对污染物的评分排序,选取危害性较高的评价因子,引入毒性权重对最大污染指数(Pi最大)进行修正。通过上述方法对内梅罗指数法进行修正,并将其应用于某石油开采区土壤多环芳烃污染分级评价中。修正后的内梅罗指数法可以在一定程度上消除了最大值的影响,提高了危害性较高评价因子的影响程度,同时兼顾了各评价因子的相关性,能够对土壤质量进行较为合理的反映。In order to solve problems in evaluating soil quality,the traditional Nemerow index method was improved by considering the correlation between the assessment factors,and utilizing the methods of multiple linear regression with the purpose of analyzing concentrations and calculating the multiple correlation coefficient of the factors,then concentration weight was introduced to adjust the parameters of average pollution index（Pi average）,meanwhile,factors with higher harmfulness were selected according to the ranking of polycyclic aromatic hydrocarbons scored by Chemical Scoring and Ranking Assessment Model（SCRAM）,and then toxicity weight was introduced to adjust the maximum pollution index（Pi max）.The Nemerow index method improved was the applied in grade evaluation of PAHs pollution in the oilfield soils.The improved method to some extent eliminates the impact of the maximum value,enhances the influence of the factors with higher harmfulness,and also takes the correlations between the assessment factors into account,and consequently leads to a more reasonable assessment for soil quality.

关 键 词：土壤 内梅罗指数法 多元线性回归 多环芳烃 浓度/毒性权重 

分 类 号：X131.3[环境科学与工程—环境科学]