卷心菜对气态和颗粒态多环芳烃的吸收

Uptake of vapor and particulate polycyclic aromatic hydrocarbons by cabbage.

作者信息

Tao S, Jiao X C, Chen S H, Xu F L, Li Y J, Liu F Z

机构信息

Laboratory for Earth Surface Processes, College of Environmental Sciences, Peking University, Beijing 100871, China.

出版信息

Environ Pollut. 2006 Mar;140(1):13-5. doi: 10.1016/j.envpol.2005.10.003.

DOI:10.1016/j.envpol.2005.10.003

PMID:16321464

Abstract

Polycyclic aromatic hydrocarbons (PAHs) in cabbage (aerial part), air (gas and particles) and soil samples collected from two sites in Tianjin, China were measured. Although the levels of PAHs in all samples from the heavily contaminated site B were higher than those from the less contaminated site A, the PAH profiles were similar, suggesting the similarity in source type. PAH concentrations in cabbages were positively correlated to either gas or particle-bound PAHs in air. A multivariate linear regression with cabbage PAH as a function of both gas and particle-bound PAHs in air was established to quantitatively characterize the relationship between them. Inclusion of soil PAH concentrations would not improve the model, indicating that the contribution of soil PAHs to cabbage (aerial part) accumulation was insignificant.

摘要

对从中国天津两个地点采集的卷心菜（地上部分）、空气（气体和颗粒物）及土壤样本中的多环芳烃（PAHs）进行了测定。尽管来自污染严重的B地点的所有样本中PAHs水平均高于污染较轻的A地点，但PAH分布特征相似，表明源类型相似。卷心菜中的PAH浓度与空气中气态或颗粒态PAHs均呈正相关。建立了以卷心菜PAH为空气气态和颗粒态PAHs二者函数的多元线性回归模型，以定量表征它们之间的关系。纳入土壤PAH浓度并不会改善该模型，这表明土壤PAHs对卷心菜（地上部分）积累的贡献微不足道。