天津表土PAHs的空间主成分与污染源分析

doi:10.11820/dlkxjz.2005.03.013

地理科学进展 ›› 2005, Vol. 24 ›› Issue (3): 109-117.doi: 10.11820/dlkxjz.2005.03.013

天津表土PAHs的空间主成分与污染源分析

刘瑞民¹, 王学军¹, 陶澍¹, 沈伟然², 秦宝平², 孙韧², 张文具²

1. 北京大学环境学院,地表过程分析与模拟教育部重点实验室,北京 100871|
2. 天津市环保局,天津 300191

收稿日期:2004-12-01 修回日期:2005-02-01 出版日期:2005-05-25 发布日期:2005-05-25

Spatial PCA and Pollutant Sources of Topsoil PAHs in Tianjin Area

LIU Ruimin¹, WANG Xuejun¹, TAO Shu¹, SHEN Weiran², QIN Baoping², SUN Ren², ZHANG Wenju²

1. College of Environ. Sci., MOE Lab. of Earth Surface Process, Peking University, Beijing 100871, China|
2. Tianjin Environ. Protection Bureau, Tianjin 300191, China

Received:2004-12-01 Revised:2005-02-01 Online:2005-05-25 Published:2005-05-25

摘要/Abstract

摘要：

在多元空间结构分析的基础上,应用空间主成分分析方法研究了天津表层土壤16种多环芳烃(PAHs)的空间主成分特征,并在此基础上探讨了空间污染源问题。分析结果显示,从总体来看,PAHs主要的污染源是燃烧源和石油源。从不同空间尺度来看,石油源的影响范围一般在5km以内,而燃烧源的主要影响范围在5~10km之间,在更大的范围上,可能是天然源,或者区域性的大气沉降。

关键词: 多环芳烃, 天津, 污染源, 因子克立格,空间主成分

Abstract:

Polycyclic aromatic hydrocarbons (PAHs) are some of persistent organic pollutants (POPs), which are widely existed in our environment. PAHs can result in some latent danger to our human being, such as cancer. More and more studies about PAHs are performed to discuss the chemical and physical characteristics, the spatial and temporal characteristics, the source and final of PAHs. Principal component analysis (PCA) is one method which can efficiently extract the main information from various data. In the environmental research, PCA is often used to extract character, concentrate information and reduce dimension. With one or some integrated index of PCA, the environmental samples can be classified and identified, and the source of pollution can be estimated. The method of PCA is also used in the research of PAHs pollution. The Spatial principal component analysis (SPCA), which is based on the theory of coregionalization, can enhance the understanding of the spatial characteristics of PAHs. In this study, 188 sampling sites in Taijin area were selected, and on each site, the top 10cm soil was collected for analysis. In the laboratory, the contents of 16 prior PAHs, as well as the soil properties, were determined for all the samples. Based on the multi-spatial structure analysis, the spatial PCA characteristics among 16 prior PAHs in topsoil in Tianjin area were studied. The pollution sources were also discussed. It is discovered in the result that the main polluting processes of PAHs in Tianjin area are petroleum source and combustion of fossil fuel. By the view of spatial scale, the influence range of petroleum source is less than 5km and the range of combustion source is from 5 to 10km. On the large scale, the principal origin of PAHs may be the regional deposit from atmosphere.

Key words: factorial kriging, PAHs, pollutant origin, spatial PCA, Tianjin

刘瑞民,王学军,陶澍,沈伟然, 秦宝平,孙韧,张文具. 天津表土PAHs的空间主成分与污染源分析[J]. 地理科学进展, 2005, 24(3): 109-117.

LIU Ruimin,WANG Xuejun, TAO Shu, SHEN Weiran,QIN Baoping, SUN Ren, ZHANG Wenju. Spatial PCA and Pollutant Sources of Topsoil PAHs in Tianjin Area[J]. PROGRESS IN GEOGRAPHY, 2005, 24(3): 109-117.

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天津表土PAHs的空间主成分与污染源分析

Spatial PCA and Pollutant Sources of Topsoil PAHs in Tianjin Area

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