Canadian and US sources impacting the mercury levels in fine atmospheric particulate material across New York State

被引：28

作者：

Olmez, I ^{[1
]}

Ames, MR ^{[1
]}

Gullu, G ^{[1
]}

机构：

[1] MIT, Nucl Reactor Lab, Cambridge, MA 02139 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1998年 / 32卷 / 20期

关键词：

D O I：

10.1021/es980142h

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

An extensive atmospheric sampling and analysis program has been completed in order to identify and apportion the sources of mercury associated with fine atmospheric particulate material (d(a) < 2.5 mu m). Samples of fine atmospheric particulate material were collected daily, at five remote sites in New York State, over a period of 2 years. The trace element composition of 1200 of these samples was determined by Instrumental Neutron Activation Analysis. Results of both meteorological and statistical analyses of the data indicate that approximately 55% of the fine particulate mercury originated from smelters in Ontario and Quebec, and 25% originated from a mixture of regional sources in the Midwestern United States. A decline in the average measured particulate Hg concentration, beginning in February 1993, has been attributed to reduced emissions from one or more of the major Canadian smelters.

引用

页码：3048 / 3054

页数：7

共 40 条

[1] Atmospheric mercury in the vapor phase, and in fine and coarse particulate matter at Perch River, New York [J].