Determination of 240Pu/239Pu atom ratio in coastal surface seawaters from the western North Pacific Ocean and Japan Sea.

[1]  Glenn T. Seaborg,et al.  Heavy Isotope Abundances in Mike Thermonuclear Device , 1960 .

[2]  K. Komura,et al.  Determination of 240Pu/239Pu ratio in environmental samples based on the measurement of Lx/alpha-ray activity ratio. , 1984, Health physics.

[3]  Edward D. Goldberg,et al.  The240Pu239Pu ratio, a potential geochronometer , 1985 .

[4]  Edward D. Goldberg,et al.  Plutonium isotopes in the environment: some existing problems and some new ocean results , 1986 .

[5]  R. Scott,et al.  The measurement of the isotopic composition of plutonium in an Irish Sea sediment by mass spectrometry , 1995 .

[6]  酒井 均,et al.  Biogeochemical processes and ocean flux in the Western Pacific , 1995 .

[7]  M. B. Lovett,et al.  Plutonium from European reprocessing operations — Its behaviour in the marine environment , 1995 .

[8]  239+240Pu and137Cs distributions in seawater from the Yamato Basin and the Tsushima Basin in the Japan Sea , 1996 .

[9]  Ken O. Buesseler,et al.  The isotopic signature of fallout plutonium in the North Pacific , 1997 .

[10]  T. Beasley,et al.  Global distribution of Pu isotopes and 237Np. , 1999, The Science of the total environment.

[11]  F. Pointurier,et al.  240Pu/239Pu isotopic ratios and 239 + 240Pu total measurements in surface and deep waters around Mururoa and Fangataufa atolls compared with Rangiroa atoll (French Polynesia). , 1999, The Science of the total environment.

[12]  Vlado Valkovíc,et al.  Radioactivity in the environment , 2000 .

[13]  S. Uchida,et al.  Measurement of 240Pu/239Pu isotopic ratios in soils from the Marshall Islands using ICP-MS. , 2001, The Science of the total environment.

[14]  M. Aoyama,et al.  Plutonium isotopes in the Sea of Japan , 2002 .

[15]  岩崎 民子.  SOURCES AND EFFECTS OF IONIZING RADIATION : United Nations Scientific Committee on the Effects of Atomic Radiation UNSCEAR 2000 Report to the General Assembly, with Scientific Annexes , 2002 .

[16]  H. Higuchi,et al.  Concentration of plutonium in squids collected from Japanese inshore measured by HR-ICP-MS, 1981–2000 , 2002 .

[17]  T. Warneke,et al.  A new ground-level fallout record of uranium and plutonium isotopes for northern temperate latitudes , 2002 .

[18]  T. Aono,et al.  Large particle flux of 239+240Pu on the continental margin of the East China Sea. , 2002, The Science of the total environment.

[19]  Satoshi Yoshida,et al.  Determination of Pu concentration and its isotope ratio in Japanese soils by HR-ICP-MS , 2003 .

[20]  G. Hong,et al.  240Pu/239Pu atom ratios in the bottom sediments of the NW Pacific Ocean , 2003 .

[21]  O. Mitamura,et al.  Distribution and dynamics of radionuclides and stable elements in the coastal waters off Rokkasho Village, Japan, prior to the opening of a nuclear reprocessing facility: Part III. Concentration levels of radionuclides in seawater off Rokkasho Village , 2003 .

[22]  Chih-An Huh,et al.  Sedimentation in the Southern Okinawa Trough: enhanced particle scavenging and teleconnection between the Equatorial Pacific and western Pacific margins , 2004 .

[23]  Masatoshi Yamada,et al.  Sediment core record of global fallout and Bikini close-in fallout Pu in Sagami Bay, Western Northwest Pacific margin. , 2004, Environmental science & technology.

[24]  G. Hong,et al.  Plutonium isotopes in seas around the Korean Peninsula. , 2004, The Science of the total environment.

[25]  Gi Hoon Hong,et al.  Distribution and inventories of 90Sr, 137Cs, 241Am and Pu isotopes in sediments of the Northwest Pacific Ocean , 2005 .

[26]  Masatoshi Yamada,et al.  Plutonium activities and 240Pu/239Pu atom ratios in sediment cores from the east China sea and Okinawa Trough: Sources and inventories , 2005 .

[27]  T. Hamilton.  Chapter 2 Linking legacies of the Cold War to arrival of anthropogenic radionuclides in the oceans through the 20th century , 2005 .

[28]  Masatoshi Yamada,et al.  Vertical distributions of 239+240Pu activities and 240Pu/239Pu atom ratios in sediment cores: implications for the sources of Pu in the Japan Sea. , 2005, The Science of the total environment.

[29]  Hiroshi Hasegawa,et al.  Large volume preconcentration and purification for determining the240Pu/239Pu isotopic ratio and 238Pu/239+240Pu alpha-activity ratio in seawater , 2005 .

[30]  Masatoshi Yamada,et al.  Determination of Pu isotopes in sediment cores in the Sea of Okhotsk and the NW Pacific by sector field ICP-MS , 2005 .

[31]  Masatoshi Yamada,et al.  Inductively coupled plasma-sector field mass spectrometry with a high-efficiency sample introduction system for the determination of Pu isotopes in settling particles at femtogram levels. , 2006, Talanta.

[32]  Distribution of anthropogenic radionuclides in the water column off Rokkasho, Japan , 2006 .

[33]  Masatoshi Yamada,et al.  137Cs, 239+240Pu and 240Pu/239Pu atom ratios in the surface waters of the western North Pacific Ocean, eastern Indian Ocean and their adjacent seas. , 2006, The Science of the total environment.

[34]  Masatoshi Yamada,et al.  Plutonium isotopes in settling particles: transport and scavenging of Pu in the western Northwest Pacific. , 2006, Environmental science & technology.

[35]  M. Yamada,et al.  Precise determination of Pu isotopes in a seawater reference material using ID-SF-ICP-MS combined with two-stage anion-exchange chromatography. , 2007, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry.

[36]  Masayoshi Yamamoto,et al.  Plutonium concentration and 240Pu/239Pu atomic ratio in liver of squid collected in the coastal sea areas of Japan. , 2007, Journal of environmental radioactivity.

[37]  M. Yamada,et al.  240Pu/239Pu atom ratios in seawater from Sagami Bay, western Northwest Pacific Ocean: sources and scavenging. , 2007, Journal of environmental radioactivity.

[38]  Masatoshi Yamada,et al.  Determination of plutonium isotopes in marine particles collected by the large volume in situ filtration and concentration system , 2008 .