Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Kenshi Katahira"'
Publikováno v:
Environmental technology. 40(26)
This study developed the 2-step extraction method which eluted the Pb adsorbing on the surface of sediments in the first solution by aqua regia and extracted the Pb absorbed inside particles into the second solution by mixed acid of nitric acid, hydr
Autor:
Masaaki Kitano, Kenshi Katahira, Mamoru Sakai, Akito Takakura, Takashi Nishitani, Takayuki Nishio
Publikováno v:
RADIOISOTOPES. 64:229-244
Autor:
Hideo Yamazaki, Hiroshi Moriwaki, Kenshi Katahira, Shusaku Yoshikawa, Yoko Saito-Kokubu, Miho Ishitake
Publikováno v:
Soil and Sediment Contamination: An International Journal. 22:1003-1012
Sediment core samples were obtained from Nishiyama Reservoir, 3 km east of the hypocenter of the Nagasaki atomic bomb, to evaluate both sources and inventories of lead delivery to the sediments. Using microwave digestions and ICP-MS analytical techni
Publikováno v:
Journal of Geography (Chigaku Zasshi). 120:599-614
This study examined isotope ratios of acid-soluble lead in boring cores taken from sediments in the Osaka City area. The sediments are more than 2,500 years old and contain only naturally occurring lead. The isotope ratios of the acid-soluble lead we
Autor:
Shusaku Yoshikawa, Hiroshi Moriwaki, Hideo Yamazaki, Kenshi Katahira, Tadao Fujita, Osamu Yamamoto, Miho Ishitake
Publikováno v:
Water, Air, and Soil Pollution. 204:215-225
Metal concentrations in a sediment core from a moat outside Osaka Castle in Japan were measured by ICP-MS following a microwave extraction method. Concentrations of metals in the sediment core samples peaked around 1945 when the World War II ended. T
Publikováno v:
Chigaku Zasshi (Jounal of Geography). 118:261-279
Autor:
Kenshiro Tsuruho, Osamu Yamamoto, Miho Ishitake, Hideo Yamazaki, Kenshi Katahira, Hiroshi Moriwaki, Shusaku Yoshikawa
Publikováno v:
Environmental Geology. 52:123-129
Concentrations of polycyclic aromatic hydrocarbons (PAHs) were measured in a dated sediment core from a reservoir at Osaka City, Southwest Japan. The sediment core consisted of deposits collected over a period of almost 70 years whose PAH content wou
Autor:
Syusaku Yoshikawa, Hideo Yamazaki, Kenshi Katahira, Tadao Fujita, Miho Ishitake, Osamu Yamamoto, Hiroshi Moriwaki
Publikováno v:
Water, Air, and Soil Pollution. 179:197-206
Heavy metal concentrations of the acid-soluble fraction in sediment core samples from Nagaike, a reservoir in Osaka City, Japan, were measured by ICP-MS following the microwave extraction method. Spiked peaks for several metals in the sediment core s
Publikováno v:
Journal of Japan Society on Water Environment. 29:693-698
Lead isotopic analyses of road sediments and traffic-related substances, such as asphalt, traffic paint, automobile tires, wheel balance weights and automobile exhaust, have been carried out to determine the sources of lead pollution in road runoff.
Autor:
Joji Fukuyama, Osamu Yamamoto, Hideo Yamazaki, Kenshi Katahira, Toshikazu Kamiura, Hiroshi Moriwaki, Shusaku Yoshikawa
Publikováno v:
Atmospheric Environment. 39:1019-1025
The historical trends of polycyclic aromatic hydrocarbons (PAHs) in the sediment core of the moat in Osaka Castle, located at the center of Osaka city, Japan, were studied. The moats in Osaka Castle were built in the 1620s, and the undisturbed sedime