THE GAS-PHASE OXIDATION OF ELEMENTAL MERCURY BY OZONE

被引：225

作者：

HALL, B

机构：

[1] Frontier Geosciences, Inc., Seattle, 98109, WA

来源：

WATER AIR AND SOIL POLLUTION | 1995年 / 80卷 / 1-4期

关键词：

D O I：

10.1007/BF01189680

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The gas phase reaction between elemental mercury (Hg-o) and ozone (O-3) has been studied in sunlight, in darkness, at different temperatures, and different surface-to-volume (s/v) ratios. At O-3 concentrations above 20 ppm, a loss of Hg-o and a simultaneous formation of oxidized mercury (Hg(II)) was observed. The results suggest a partly heterogeneous reaction, with a gas phase rate constant of 3 +/- 2 x 10(-20) cm(3) molec.(-1) s(-1) at 20 degrees C. This corresponds to an atmospheric Hg half-life of about one year at a mean global O-3 concentration of 30 ppb.

引用

页码：301 / 315

页数：15

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