苏必利尔湖两个乡村地点空气中多环芳烃、多氯联苯和农药浓度的比较。

A comparison of PAH, PCB, and pesticide concentrations in air at two rural sites on Lake Superior.

作者信息

Buehler S S, Basu I, Hites R A

机构信息

School of Public and Environmental Affairs and Department of Chemistry, Indiana University, Bloomington 47405, USA.

出版信息

Environ Sci Technol. 2001 Jun 15;35(12):2417-22. doi: 10.1021/es001805+.

DOI:10.1021/es001805+

PMID:11432542

Abstract

Atmospheric concentrations of polycyclic aromatic hydrocarbons (PAHs), polychlorinated biphenyls (PCBs), and pesticides were compared at Brule River and Eagle Harbor, two rural sites on Lake Superior that are part of the Integrated Atmospheric Deposition Network (IADN). Brule River lies 40 km southwest of Duluth, MN, a small industrial city, and Eagle Harbor is in Michigan's upper peninsula, 400 km east of Brule River. Pesticide and PCB concentrations were similar at both sites. Day-by-day regression analyses of the data showed that PAH concentrations, an indication of urban contamination, were significantly higher at Brule Riverthan at Eagle Harbor. Concentration ranges for all compounds at both sites were well within global background levels, despite the differences observed between the two sites. Clearly, pollution from Duluth is influencing PAH concentrations at Brule River more than at Eagle Harbor.

摘要

在苏必利尔湖的两个乡村地点——布鲁尔河和鹰港，对多环芳烃（PAHs）、多氯联苯（PCBs）和农药的大气浓度进行了比较，这两个地点都是综合大气沉降网络（IADN）的一部分。布鲁尔河位于明尼苏达州德卢斯西南40公里处，德卢斯是一个小型工业城市，而鹰港位于密歇根州上半岛，在布鲁尔河东400公里处。两个地点的农药和多氯联苯浓度相似。对数据进行的逐日回归分析表明，作为城市污染指标的多环芳烃浓度在布鲁尔河显著高于鹰港。尽管两个地点之间存在差异，但所有化合物在两个地点的浓度范围都远低于全球背景水平。显然，德卢斯的污染对布鲁尔河多环芳烃浓度的影响比对鹰港的影响更大。