watanabe_2005.htm
Bulletin of Glaciological Research 22 (2005)
51-55
©Japanese Society of Snow and Ice
Measurements of peroxide concentrations in
precipitation in Toyama and in the snow
pit at Murododaira, near the summit of Mt.
Tateyama
Koichi WATANABE, Ayumi IWAI, Nozomi TAKEDA
and Yusaku TAKEBE
Department of Environmental Systems Engineering,
Colleges of Technology,
Toyama Prefectural University, Kosugi-machi,
Toyama 939-0398, Japan
Abstract
Measurements of the peroxide concentrations in precipitation were conducted at Kosugi-machi in Toyama from June 2002 to January 2004 and in the snow pit at Murododaira, near the summit of Mt. Tateyama, in April 2004. The concentrations of peroxides in the precipitation samples at Kosugi-machi exhibited a range from below the level of detection (<0.1μM) to 67μM. The peroxides concentrations were much higher from summer to early autumn than those from late autumn to early spring. The concentrations of peroxides in the snow pit at Murododaira ranged from below the level of detection to 2.6μM. The level of peroxides decreased with depth. Post-depositional loss of peroxides might have occurred.
