Photochemical formation of volatile mercury in high Arctic lakes

被引：77

作者：

Amyot, M

Lean, D

Mierle, G

机构：

[1] YORK UNIV, DEPT BIOL, FAC PURE & APPL SCI, N YORK, ON M3J 1P3, CANADA

[2] ENVIRONM CANADA, CANADA CTR INLAND WATERS, NATL WATER RES INST, BURLINGTON, ON L7R 4A6, CANADA

[3] MINIST ENVIRONM & ENERGY, DORSET RES CTR, DORSET, ON P0A 1E0, CANADA

来源：

ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY | 1997年 / 16卷 / 10期

关键词：

mercury; Aquatic; Arctic; photoreduction; volatilization;

D O I：

10.1002/etc.5620161010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Formation rates of dissolved gaseous mercury (DGM) were measured in three high (74 degrees N) Arctic lakes and one wetland. The rate of formation of DGM was controlled by (1) the intensity of solar radiation, particularly ultraviolet-B (280-320 nm) and ultraviolet-A (320-400 nm) wavebands and (2) the concentration of available photoreducible Hg(II) complexes. Additions of hydrogen peroxide and of fulvic acids did not enhance DGM formation rates in our experiments. This study illustrates that photoreduction of mercury occurs in a wide range of aquatic systems even in the high arctic where radiation levels are lower but continue for the entire day during the summer.

引用

页码：2054 / 2063

页数：10

共 42 条

[21] PROSPECTS FOR MODELING THE BEHAVIOR AND FATE OF MERCURY, GLOBALLY AND IN AQUATIC SYSTEMS [J].